Name: This Splitter Blocks All TV Antenna Signals. @GrantsPassTVRepair
Uploaded: 2026-09-23T08:17:00-05:00
Duration: 8 min 17 s
Description: This Splitter Blocks All TV Antenna Signals.

This Splitter Blocks All TV Antenna Signals.

Grants Pass TV Repair 2026-09-23 | This Splitter Blocks All TV Antenna Signals.

Is Perpetual Motion With Magnets Possible?

Grants Pass TV Repair 2024-04-30 | If you have ever conducted a search for perpetual motion magnet motors on youtube, you have undoubtedly seen a large variety of motors, which appear to operate on magnets alone, and you might have wondered, if permanent magnet motors are really possible.
The laws of physics as we understand them today, would predict that a motor of this design can never work, nevertheless, many people keep experimenting with different designs, in the hope that they can prove perpetual motion is possible, and I suspect that one day, someone may figure this out.

Giant induction coil picking up Audio 5 feet away!

Grants Pass TV Repair 2024-04-26 | This is an expanded video of my Giant Inductive pick up coil experiment.
Have you ever wondered how far the electromagnetic fields from power lines can be picked up? In this experiment I brought a large coil of wire with me far up in the mountains, and attached it to my audio amplifier, and much to my surprise, I still had a pretty strong 60 cycle AC hum at a great distance from the power lines.
The other reason I wanted to get away from the 60 Cycle AM hum, was that I wanted to see how far a giant inductive coil would be able to hear small electromagnetic signals powering the speaker in my small digital tape player.
Regarding my question about what you might hear, if you constructed a giant induction coil, I think the video at this link pretty well explains it.. youtube.com/watch?v=iHY-GMrqK9A
For anyone interested in knowing the coil size. I used two coils in this experiment. Each coil was wound on a spool that had 34 inch circumference, and each coil weighed about 6 pounds. The wire appears to be 30 gauge. You can use copper enamel magnet wire, or whatever you happen to have, but it seems that the larger the diameter of the spool it's wound on, the more sensitive it appears to be, and the more turns you have, the more sensitive it appears to be.
Have fun and please be safe.

Giant Induction Coil 5 Feet Away Picking Up Audio.

Grants Pass TV Repair 2024-04-21 | Have you ever wondered how far the electromagnetic fields from power lines can be picked up? In this experiment I brought a large coil of wire with me far up in the mountains, and attached it to my audio amplifier, and much to my surprise, I still had a pretty strong 60 cycle AC hum at a great distance from the power lines.
The other reason I wanted to get away from the 60 Cycle AM hum, was that I wanted to see how far a giant inductive coil would be able to hear small electromagnetic signals powering the speaker in my small digital tape player.
For anyone interested in knowing the coil size. I used two coils in this experiment. Each coil was wound on a spool that had 34 inch circumference, and each coil weighed about 6 pounds. The wire appears to be 30 gauge. You can use copper enamel magnet wire, or whatever you happen to have, but it seems that the larger the diameter of the spool it's wound on, the more sensitive it appears to be, and the more turns you have, the more sensitive it appears to be. Have fun.
For those who may be interested, I made a longer version on this experiment in the landscape mode you may find more interesting at this link. youtube.com/watch?v=83edokt3K5c

Connecting Two Landline Telephones Together Update.

Grants Pass TV Repair 2024-04-13 | I recently made a video, where I demonstrated how two ordinary landline telephones can communicate with each other, by plugging the phones into each other, and adding a 9 volt battery in parallel with the telephone wiring. After I made the video, some of the comments suggested I should have added my 9 volt battery in series with the phones, and when I followed your advice, I realized you were right, and it worked far better in a series circuit, so I wanted to update my video, and thank some of you guys, who informed me that my parallel circuit was inferior to a series circuit. One additional note on the Bell voltage. I've been informed by a gentleman who use to install telephones, that the bell voltage is typically 48 volts AC, but after searching around, I noticed a rather large variety of opinions on what it should be.

Why Is This Electric Art Still Killing People?

Grants Pass TV Repair 2024-04-11 | In this video, I talk about some of the dangers when working with electricity, and especially when making fractal art on wood with electricity.

Rocks That Detect Radio Broadcasts.

Grants Pass TV Repair 2024-04-09 | In this video, I give a short demonstration of a crystal radio I built, from a book called radios that work for free, by K E Edwards. For those who might be interested, I also had the honor of interviewing Mr Edwards at his Oregon home, where he gave me a tour of his home made radios, which can be seen at this link. youtube.com/watch?v=G4YDsvv1DEk

Tuned Antennas Lighting Up LEDs

Grants Pass TV Repair 2024-04-06 | In this video, I demonstrate how resonant antennas which are cut to specific lengths, are able to light up LEDs, if you transmit on their resonant frequencies. For those who want an expanded description on how to build one of these antennas, please watch this video.
youtube.com/watch?v=vHVmJ5lD9jc&t=19s

Polarizing Filters From LCD TVs

Grants Pass TV Repair 2024-03-17 | In this video I demonstrate some of the interesting effects you can produce with LCD displays and polarizing filters which I salvaged from some broken LCD Displays. Since light is believed to have two polarities, this video demonstrates how one of the two polarities can be blocked, and how the liquid crystal can be manipulated to allow light to pass through it. If you attempt to remove the thin polarizing filter from the glass as I have done, it requires a good single edge razor blade to remove the filter from the glass, and a lot of patience and some heat to soften the bonding glue that holds the display sections together.

Microwaving Eggs From A Distance.

Grants Pass TV Repair 2024-03-09 | As I've run into an increasing number of people who tell me about their fear of microwave ovens. 5G cell phone towers, cell phones,, and smart meters, I set up this experiment to demonstrate how weak radio waves are at a distance, by placing numerous eggs in front of my microwave oven, to see how microwaves would effect them at various distances. The eggs closest to the microwave oven were only mildly warm after 35 minutes or exposure, but eggs beyond 13 inches remained cool. Here's a link to a video by a gentleman who believes microwaves aren't as dangerous as people think, and he makes his case by microwaving his own hand and face to prove his point. youtube.com/watch?v=3hBRxwQXmCQ
Conventional science teaches that non-ionizing electromagnetic radiation from Microwaves and many other sources are harmless at a distance, even though they have the potential to cook things up close.
For those who may be interested in learning more about the LED and diode combination I used in this experiment. Check out this link to learn more. youtube.com/watch?v=vHVmJ5lD9jc&t=26s

Whats More Dangerous. Voltage Or Amperage? Dont Try This At Home.

Grants Pass TV Repair 2024-03-07 | In this video I ask the question. What's more dangerous. Voltage Or Amperage. I think the best answer is both can be harmless, and both can be deadly, but it depends on the resistance of the load you're applying your power to, and how much current and voltage you have combined. In this video I demonstrate how I can zap my hand with thousands of volts, but it doesn't produce much pain due to the current being so low. I also demonstrate how a potentially high current source can also be harmless, if your voltage is to low to pass much current through a resistive path such as my dry hand,
Because it takes very little current to kill a human being, one must be very cautious when working with high voltages which are combined with high currents, such as one would find on the output of a microwave oven transformer. Microwave oven transformers are extremely dangerous, as they produce high voltages combined with high currents, so unless you fully understand the potential dangers of using one, please don't experiment with them...

Electric Bike Motors Converted To Generator.

Grants Pass TV Repair 2024-03-01 | In this video, I demonstrate how burnt out electric bike motors, may still be salvageable, and turned into homemade electricity.. I don't know the power output limits from these motors, but considering they are build to handle high currents as motors, I'd guess most of them can produce a few hundred watts without burning out the motor windings, and they don't require high RPMs to produce useable electricity to charge batteries, or power many other devices.
Because there were several wires coming out of my motor, I ran a few tests to determine which wires would be the best outputs, but as a general rule, I would assume it's mostly likely to be the thickest wires, as they are designed to handle the most current.

Solar Power With No Visible Sun.

Grants Pass TV Repair 2024-02-29 | Since I live in Southern Oregon, where the winters can long and rainy, and the clouds often block the sun for several days at a time, I've often wondered if solar panels would be of much use here. So as an experiment I installed a couple solar panels on my truck, and monitored their output, just to see what kind of energy I could produce in the winter season. What I discovered surprised me. Even though my panels have the potential of producing 10 amperes of power, In the winter months with no sunshine I can still produce enough energy to be useful when the clouds are covering the sun, and I've seen my power fluctuate between 3 tenths of an amp and up to 4 amperes, depending on how heavy the cloud cover is. Since I mainly wanted a back up power supply to keep my 12 volt batteries charged. I feel quite comfortable that my 2 panels are enough to keep my batteries charged for emergencies.

Solar Panel Audio Detector!

Grants Pass TV Repair 2024-02-28 | In this video I demonstrate how a solar panel can turn light waves into sound, by attaching the panels output wires to the input of a telephone amplifier. For those who are interested in making a project like this, please note that not all amplifiers will worked well with this set up, but these older telephone amplifiers worked great.. One other point I should explain, his how I'm able to light up the two LEDs (Light Emitting Diodes) with just an antenna and a ground wire. I live about a mile from two AM radio stations, so I'm able to pick up enough power off my 200 foot long wire antenna to light up the LEDs, with no problem. Also note that a 1N5711 can replace the 1SS86. It's not as sensitive as the1SS86, but it works in case you can't find the original 1SS86 diodes made by Hitachi. There are many fake 1SS86 Diodes out there that may work, but not as well as the original Hitachi 1SS86 Diodes.
Since I've posted similar videos related to this topic, you might find these other videos of interest, such as my 2 dollar radiation detector you can build.. Have fun but be safe.. youtube.com/shorts/G5q0VvTCYEI
Here are some additional related videos you may enjoy.
youtube.com/shorts/6m2MUinMCf8
youtube.com/watch?v=yqljaKjKjd4@G5q0VvTCYEI
youtube.com/shorts/aSSqrddG6B0

Detecting a Permanent Magnet 18 Feet Away!

Grants Pass TV Repair 2024-02-27 | Magnets. We know how to predict their behaviour, and how to use them in many electronic devices, but when it comes down to knowing what they are, it's still a mystery. In this video I demonstrate how even a small magnetic can produce a field that can be detected 5 feet away,

Electromagnetic Induction From Three Feet Away!

Grants Pass TV Repair 2024-02-26 | There's something about magnets and electromagnetism that most every electronics experimenter finds fascinating, and I'm no exception. After learning the principles of induction and electromagnetism, I found myself building a variety of homemade motors and generators, believing t I might discover some new design principle that would revolutionize the world. It never worked out that way, but the education I got through my experimenting was priceless..

Simple AC Generator Project For Demonstrating Alternating Current.

Grants Pass TV Repair 2024-02-25 | Reflecting back on the fun I had learning electronics, it was simple projects like this, that encouraged me to experiment and learn more. This simple AC generator is not a very efficient design, and doesn't produce much power, but it still fascinates people who see how a magnetic field can produce energy in a coil of wire, in spite of the distance between the magnet and the coil. My coil is made with 30 gauge copper enamel magnet wire, and the weight is about 5 pounds, which I believe must have about 3 miles of wire in it.

Finding Bad Capacitors With A Hair Dryer Or Heat Gun

Grants Pass TV Repair 2024-02-07 | When trying to find the source of an intermittent problem, Sometimes applying a little heat from a hair dryer or heat gun to at a capacitor, may temporarily restore the capacitor long enough to verify that a bad capacitor is what's causing your circuit to malfunction. If you do use this technique, be careful not to over do it with to much heat,, so you don't cause any new problems .

Two LEDs In Parallel Can Rectify Radio Waves And Light Up!

Grants Pass TV Repair 2024-02-03 | In a previous video I demonstrated how you can light up an LED with a tuned antenna, and a reverse biased diode in parallel with your LED,, but I didn't realize you could do the same thing using two ordinary LEDs. The LED circuit was not nearly as sensitive as my design which used the 1SS86 diode, and could not respond to WiFi signals from my router, but it did work on my 200 food long wire antenna, thanks to a close by radio station and my two meter walkie talkie was also able to light up my LEDs, my transmitter antenna had to be real close to the antenna on my LEDs. Here is a link to the first video if you want more information on the diode and LED circuit. youtube.com/watch?v=vHVmJ5lD9jc&t=18s.

Hole Drilling Alternative, When Mounting Starlink Antenna Tripods On Metal Roofs.

Grants Pass TV Repair 2024-01-29 | tvrepairinformation.weebly.com
If you're looking for a way to mount your starlink tripod on a metal roof, but drilling holes is not an option, putting magnets on the tripod legs might be a reasonable option.

Why You Should Load Test Small Batteries.

Grants Pass TV Repair 2023-11-03 | tvrepairinformation.weebly.com
In this video I talk about how misleading it can be to test small batteries with a multimeter, and the importance of putting a small load across a battery when testing it.

The Amazing World Of Amateur Radio. An inside view of the hobby. Part 1

Grants Pass TV Repair 2023-08-18 | Part 1.youtube.com/watch?v=Sw7bwVnPiEI&t=0s
part 2. youtube.com/watch?v=HSeuRiqWg-o&t=85s
This video is part 1 of a two part video I made while visiting with the president of the our local Ham radio club Steve Porter. Steve has been into this hobby for many years, and is well known for his skills in setting up transmitters towers used by the police, television stations, and other emergency services that make use of his hill top towers. In part 2 Steve shows his elaborate Amateur radio station setup, and answers many questions related to this hobbie. Here is the link to

The Amazing World Of Amateur Radio. An inside view of the hobby. Part 2

Grants Pass TV Repair 2023-08-18 | part 1 youtube.com/watch?v=Sw7bwVnPiEI
Part 2 youtube.com/watch?v=HSeuRiqWg-o&t=85s
In this video I had the honor of visiting with the president of our ham radio club Steve Porter. Also known by WA6YSM. Steve gave me an inside tour of his hobbie, and some of the latest technology amateur radio operators are using to make this hobbie more exciting than ever.
Grants Pass TV website. tvrepairinformation.weebly.com

Id guess the TV main board is bad. What are your thoughts on this?

Grants Pass TV Repair 2023-07-06 | One thing I never liked about troubleshooting a television problem, is the guesswork involved in figuring out why the TV isn't working. Having a schematic, and a basic understanding of how your TV works reduces the chances of a misdiagnosis, but if you don't have a schematic, there's always a certain level of guess work. On this Television I'm guessing the main board is bad, but unless the customer agrees to have me fix it, It's going to remain a guess. What are you thoughts on my diagnosis here?

This Television is philips, but the back sticker says it's a Funai TV. Model number 50pfl5766/F7

My 91 year old father on his daily run to stay healthy.

Grants Pass TV Repair 2023-07-01 | This is a video of my father doing his daily run for his health. He does this twice a day.
This video was made on June 26, 2023

Antique Gas And Steam Motors On Display At The Pottsville Oregon Gathering. June 17. 2023

Grants Pass TV Repair 2023-06-20 | This antique engine display was taken at the annual pottsville gathering of antique engine enthusiasts on June 17 2023 in Merlin Oregon. pottsvilleoregon.com

Inferior Diodes to beware of for 2 dollar radiation detectors.

Grants Pass TV Repair 2023-06-08 | In this video I demonstrate the problem you may run into when buying aftermarket parts that don't perform as the original parts do. In this demo I show how a diode labeled 1SS86 is inferior to the same diode made by Hitachi, and why it helps to buy parts from a reputable parts distributor.. If you are looking to buy this particular part, take note of the letter H on this diode. Indicating this 1SS86 diode is made by Hitachi. Thanks to a viewer I've learned of another diode that worked fairly well for this project. Its part number is 1N5711

Here is a link to the first video I made on this project.https://www.youtube.com/watch?v=vHVmJ5lD9jc

Here is a link to a spec sheet on the diode made by Hitachi. pdf1.alldatasheet.com/datasheet-pdf/view/83373/HITACHI/1SS86.html

Van window pointlessly smashed as crime increases in Grants Pass Or.

Grants Pass TV Repair 2023-06-07 | Having a business in Grants Pass Oregon has become quite a liability over the last few years, and it seems to be getting worse. In spite of our beautiful scenery, and majestic mountains and rivers, There's a new culture of angry druggies that seem to be growing in numbers, and sadly I don't see things getting much better.

Water Distiller Repair.

Grants Pass TV Repair 2023-03-29 | In this video I'm repairing a Water Distiller that what brought in shop for repair. Since it didn't have any Transistors or integrated circuits, It's logic functions were all switch based, so the troubleshooting part was easy to analyze. If you have one of these units in need of repair, I hope you find this video to be helpful. The model number is.46C F8

Rats And Electronics Dont Mix Well.

Grants Pass TV Repair 2023-02-25 | tvrepairinformation.weebly.com
A customer brought in power supply and controller board from his sauna, and he said it worked fine until the rain water shorted them out.
Since the 12 volt 3 amp power supply was in such bad shape, I found 20 dollar replacement and thought that would solve the problem, but as I began to look things over, I noticed the controller board had no logic functions telling it what to do from the controls inside of the sauna, and I discovered that rats had eaten right through the wiring, so I soldered it all back together and the unit works fine now. I mentioned that Decon Rat poison can cause Rats to become very aggressive from dehydration, but I mispronounced the name and called it Defcon rat poison. After splicing this wire the repair was successful.

Satellite Antenna Converted To UHF TV Antenna

Grants Pass TV Repair 2023-02-06 | tvrepairinformation.weebly.com
In this video I demonstrate a simple Satellite to UHF TV Antenna Conversion that worked quite well on the UHF band. I'm not sure how much the Satellite reflector actually helped to strengthen the signal, but signals are so strong in the neighborhood I probably could have just used the loop alone and been fine..

All TV Signals Are Blocked By Mountains. Only Reflections Are Available Here.

Grants Pass TV Repair 2023-01-21 | tvrepairinformation.weebly.com
Due to living in a city surrounded by mountains, I'm often forced to point my TV antennas at mountains which are far from the transmitters, This is one such example..

Antenna Was To High To Pick Up TV Signal.

Grants Pass TV Repair 2023-01-14 | tvrepairinformation.weebly.com
There seems to be a myth that putting a TV antenna up high is the best way to get a strong signal. That's often the case, but sometimes lowering the TV antenna can improve your reception.

On this job the woman called to complain she was missing channel 12 VHF, and after many attempts to get her antenna pointed in the right direction, I lowered the antenna, and suddenly the signal came fairly strong.

Time Lapse Video Of Fog In Grants Pass Oregon.

Grants Pass TV Repair 2023-01-01 | youtube.com/watch?v=wD5jdANkr6Y
This video shows the ground fog rolling through the mountains in Grants Pass Oregon. It was made on December 26 2022 Somewhere between 3:30 and 5:30 PM, I wish I had stayed a little longer, but it was getting a bit to dark.

Signal Splitters That Block TV Signals..

Grants Pass TV Repair 2022-12-18 | tvrepairinformation.weebly.com
When I first started doing TV antennas I didn't realize there was any difference between a signal splitter used for over the air Antenna TV signals, and a diplexer, which is used with satellite signals, and I quickly discovered the DC pass through side of the diplexers used for satellite TV prevented the TV antenna signals from passing through them. In this video I explain in more detail what I learned as a result. If you look at the specifications on the splitters you will often see the frequencies they are designed to pass.
==============================================================================
HERE ARE THE NAMES OF SOME SIGNAL SPLITTERS THAT WORKED WELL FOR TV SIGNALS.
Please take note of the frequencies they are designed to pass, to make sure they are okay for your area. Here in Grants Pass Oregon nothing is broad over 700 MHZ
Amphenol BDS1202H ---This one can only pass 5 to 1218 MHZ.
Antronix CMC2002U -----This one can only pass 5 to 1002 MHZ
Regal S2DGV6 --------------This one can only pass 5 to 600 MHZ
PPC PPC-GHS-2E ----------This one can only pass 5 to 1218 MHZ
Electracord -------------------This one can only pas 5 to 890 MHZ
===============================================================================
HERE ARE SOME SPLITTERS THAT HAVE A DC PASS THROUGH THAT (DOESN'T BLOCK OTA SIGNALS).
MSPLT2R1-02 and the MSPLIT4R1-02 This splitter has 4 outputs, and one of them has a DC pass through from 2 TO 2150 MHZ
================================================================================= HERE ARE THE NAMES DIPLEXER MODEL NUMBERS (((YOU SHOULD AVOID))) FOR OVER THE AIR TV SIGNALS, AS THEY ARE DESIGNED FOR SATELLITE TV SIGNALS ONLY!
Holland HCDA-PI
Holland DP02
Holland STVC
Radio Shack 15-1847
RCA D920

Motor Speed Adjustment On AM FM Cassette Player.

Grants Pass TV Repair 2022-12-16 | tvrepairinformation.weebly.com
In this video I share a simple motor speed adjustment I made on a small AM, FM cassette player by adjusting the variable resistor in the motor. When I first adjusted the motor I was not able to raise the speed very high, and the sound had a warble noise as if the play back speed was going up and down. I was about to give up, but since variable resistors are known to get dead spots much like volume controls in stereos and other devices, I sprayed some electronic lubricant on the variable resistor inside of the motor, and the problem was solved.

Starlink Satellites Obstructions Are Lowering Internet Speed To 4O MPS, But Its Very Useable..

Grants Pass TV Repair 2022-11-21 | tvrepairinformation.weebly.com
For those who have wondered about the problems you might encounter from trees and mountains that are in between your Starlink Satellite receiver and the satellites, I've been in some bad locations, where I wondered if the obstructions would be a problem, but so far every one I've installed has worked just fine. I have seen the speed significantly reduced in some locations, but so far the lowest internet speeds I've seen were 4O MPS, but that was still more than enough to customer happy. In better locations I've seen the speed reach to around 170 MPS.
On this job I was concerned about the range of the wifi signal being able to reach the guest house, but I placed the modem next to a window facing the guest house, and found the signal was strong enough to stream video to a smart TV over to the guest house.

Hot Staples For Repairing Broken Plastic.

Grants Pass TV Repair 2022-09-06 | tvrepairinformation.weebly.com
If you have ever found it difficult if not impossible to weld cracks in plastic using glue this may be the ideal way to solve your problem. As someone who has done dozens of repairs on broken plastic devices I've come to the conclusion that some plastics can't be repaired by clue alone, so I'd often bend paper clips into various shapes and heat them up so they could be melted into the plastic for added support, but I recently discovered there was already a product on the market that used the same principle to mend plastic as I was using, except that it used a variable current source to heat the staples.

Troubleshooting Circuits With A Watt Meter Or An Amp Meter. Toro Electric Leaf Blower.

Grants Pass TV Repair 2022-09-05 | tvrepairinformation.weebly.com
In this video I demonstrate the value of using a watt meter or an amp meter to determine if a motor has shorted windings or other issues which may cause your electronic devices to consume more power than they should.
The device tested in this video is Toro electric leaf blower.

13 Television Antennas Tested on the UHF band,

Grants Pass TV Repair 2022-07-28 | tvrepairinformation.weebly.com
In this video I tested 13 different TV Antennas to see how their signal strength compared on the UHF band, and I made a chart for easy comparison to help people decide which antenna might be ideal for their location.

Since I was not able to receive a VHF signals at this location I tested the Antop Big Boy and the omni directional antenna in a different location to see how they performed on the VHF band in comparison to my Channel Master Advantage 45 and they were no match due to their size. Nevertheless I'm sure there are location where the Antop antennas would be just fine.

I had some additional thoughts about omni Vs directional antennas which I want to mention here. An omnidirectional antenna may be ideal in many locations, but the downside to using an omnidirectional antenna is its signal gain will be less than a directional antenna, so even though you may have transmitters all around you, it may still be to your advantage to use a directional antenna, but It's really a trial and error experiment to see what works.

Here is a list of the TV antennas I tested from left to right.

#1 is the Antop AT-133B indoor antenna.
#2 My simple homemade loop antenna.
#3 is the Antop AT-415B Omni directional antenna .
#4 is the Big Boy"AT-400BV Antop Indoor outdoor antenna.
#5 is a Stellar Labs Bow Tie antenna.
#6 is a clear stream 2 from Antennas Direct.
#7 is a RCA ANT705E..
#8 is the Winegard Free Vision. Part #FV-30BB
#9 is an RCA ANT752Z.
#10 is a Clear Stream 4 from Antennas Direct.
#11 is a Channel Master Advantage 45. Part # CM3016
#12 is a GE is a 29884 Attic Mount Antenna
#13 is a Winegard HD7694P

UFO omni-Directional AT-415B: amazon.com/dp/B07K6HMFZ6
"Big Boy"AT-400BV: amazon.com/dp/B07Z3KYCVD
"Paper thin" AT-133B: amazon.com/dp/B085Q9WSSQ

Samsung TV mainboard and backlight test. See info section for additional info.

Grants Pass TV Repair 2022-06-17 | tvrepairinformation.weebly.com
In this video I demonstrate how many of the newer Samsung LED TVs will allow the back lights to come on if you unplug the cable going to the main board.
Since backlight and mainboard failures are fairly common, this test can be helpful in trying to figure out if your backlights are the cause of your problem, or the main board, Since a defective T-con board can also be the reason the TV goes into shut down it's also advisable to try unplugging the T-con board on the input side to see if that allows the backlight to come on.

If it does you can also unplug the output side of the T-CON board and see if the display is causing your TV to shut down.
This youtuber went into far more troubleshooting depth than I did in my video. It's worth watching. This youtuber covered other possibilities in greater depth than I did here. youtube.com/watch?v=77tymvTJDxo

Is Stretching TV Antenna Wire A Problem?

Grants Pass TV Repair 2022-05-07 | tvrepairinformation.weebly.com
I recently had a customer call me to complain that some of his TV channels were missing, and what I found had me wondering if bending, kinking or stretching TV antenna wire is more of a problem than I've ever realized since running new coax solved the problem.. If you have had an expereince like this please share your experience.

75 Years Old TVs. Antique Radio Doctor.

Grants Pass TV Repair 2022-02-25 | In this video I made a visit to Barry Dalton the Antique Radio Doctor here in Grants Pass Oregon. Barry has been a permanent fixture here in Grants Pass Oregon for many years repairing older car radios and other antique electronic equipment. Since he's about to close up his shop I was glad he was willing to give me a tour of his collection of Antique TVs and Radios..
Here is Barrys youtube channel.
youtube.com/channel/UC6RNQEfNZnN43BZEHYL9SCA

Weak TV Tuners, & Celll Phone Interference Filters.

Grants Pass TV Repair 2022-02-21 | Something I see quite often after installing TV antennas are differences in reception from one TV manufacture Vs another. As impressed as I am with Sony TVs, In this video I demonstrate how the Samsung TV tuner performed better than the Sony TV tuner. I doubt this means that all Sony TV tuners are bad, and all Samsung tuners are good, but for this particular model the Samsung TV had less signal drop out.
The other thing I've wondered about are the cell phone interference filters that Channel Master sells. I've tried this filter in several locations and they have never helped here in Grants Pass, but I'd love to hear your experiences if you have found them helpful in your area.

Dont Trust Television Signal Maps Until you run your own test. Another example.

Grants Pass TV Repair 2022-02-19 | As someone who installs quite a few TV antennas, I often use signal strength maps such as tvfool.com to get am idea on which channels I might be able to pick up, and which direction to point my antenna, but sometimes these maps are quite wrong on which channels I can or can't pick up as I show in this video. Do you use one of these calculators, and if so which one have you found to be the most helpful?

TV Antenna Job And Finding A Car On Fire.

Grants Pass TV Repair 2022-02-05 | On my way to this antenna job I noticed a car parked on the side of the road which had graffiti sprayed on the side of it which read "one broke b--tch" and while leaving this job I discovered this same car was on fire, and the forest next to it was starting to burn.. I'm not sure about the cause of this, but I'd guess it was most likely arson.
The antenna I used to replace his old one was an RCA model ANT705, and I've found it to be a fairly good antenna for some parts of Grant Pass. Other parts of Grants Pass require a yagi antenna with a little more gain on the VHF frequencies.

Must have DC Inductive Amp meters

Grants Pass TV Repair 2022-02-01 | Until recently I never realized there were inductive clamp on DC Amp meters which are able to measure the current flowing through a wire without making any electrical contact. AC clamp on meters have been around for many years, but I had never realized there were some which are also able to measure DC current.

KARCHER SC3 STEAM CLEANER REPAIR

Grants Pass TV Repair 2022-01-12 | An old friend brought in a KARCHER SC3 steam cleaner which had never been used, and he complained that it was it was unable to produces any steam.
When I first plugged the unit in I could feel that the heater unit was warming up, but still no steam.
It turned out the solenoid operated valve was not allowing water to flow from the water tank to the heater element due to a bad connector on the circuit board. One of my viewers mentioned that the solenoid device I mentioned is actually a solenoid pump, and I think he's probably right since I heard it something making fast clicking noises when I powered it up.

A sprinkler system to help protect your home during fire season

Grants Pass TV Repair 2022-01-11 | I was out doing a TV antenna job in Taklima Oregon, and noticed the woman I was working for had this interesting sprinkler on her roof as a means of fire protection.

The most unusual job location Ive ever encountered.

Grants Pass TV Repair 2022-01-08 | This antenna job took me to such an unusual location I figred it was worth showing in this video. The house you see me driving under is over 5O years old, and part of the reason it was built over the road was to discourage logging trucks from being able to pass through and log the property.

Panasonic DVD VCR REPAIR DMR-ES30V

Grants Pass TV Repair 2021-12-28 | powersupplyrepairguide.com
The model repaired in this video is a Panasonic DMR-ES30V.
The switching regulator part number is MR1521. Location number is IC11201.
One side note. This model has a delayed turn on when you press the power button, so don't panic if you replace the IC and it doesn't immediately come on.
If you would like to know more about power supply repair I'd like to suggest you check out this link. powersupplyrepairguide.com