Restoring a Commodore 1702 monitor using a main board from 2023 @adriansdigitalbasement
Restoring a Commodore 1702 monitor using a main board from 2023  @adriansdigitalbasement
Uploaded January 2024 | Updated September 2026, 2 weeks ago
It's no secret that I simply love the JVC built Commodore 1702 monitor. It's a solidly built and excellent performing monitor.

One thing that lets the monitor down is the fact that isn't a multi-standard monitor, meaning it only support PAL _or_ NTSC (depending on where there monitor is from.)

Another common problem with these monitors is that most 1702 monitors are now nearly 40 years old, and can be quite worn out.

Let's fix both of these issues by making a one of a kind multi-format and improved 1702 monitor!

0:00 Intro
2:05 Installing the new board
17:11 First power up and setup
28:10 Figuring out how to connect external video inputs and enable S-Video
38:17 Testing out Chroma-Luma input (S-Video)
42:58 Testing the tuner
45:28 Fully testing the completed monitor
56:53 Outro
1:01:29 Addendum (for analog video nerds)

-- Links

Replacement TV board: ($54 as of Dec 2023)
aliexpress.us/item/3256805253057004.html

Scanned schematics and service mode info:
github.com/misterblack1/yichuang_crt_board

First video using this replacement board:
youtube.com/watch?v=MoqflFfvkR0

Hannover Bars
en.wikipedia.org/wiki/Hanover_bars

Adrian's Digital Basement Merch store:
my-store-c82bd2-2.creator-spring.com

Adrian's Digital Basement ][ (Second Channel)
youtube.com/channel/UCbtwi4wK1YXd9AyV_4UcE6g

Support the channel on Patreon:
patreon.com/adriansdigitalbasement

-- Tools

Deoxit D5:
amzn.to/2VvOKy1
store.caig.com/s.nl/it.A/id.1602/.f

O-Ring Pick Set: (I use these to lift chips off boards)
amzn.to/3a9x54J

Elenco Electronics LP-560 Logic Probe:
amzn.to/2VrT5lW

Hakko FR301 Desoldering Iron:
amzn.to/2ye6xC0

Rigol DS1054Z Four Channel Oscilloscope:
rigolna.com/products/digital-oscilloscopes/1000z

Head Worn Magnifying Goggles / Dual Lens Flip-In Head Magnifier:
amzn.to/3adRbuy

TL866II Plus Chip Tester and EPROM programmer: (The MiniPro)
amzn.to/2wG4tlP
aliexpress.com/item/33000308958.html

TS100 Soldering Iron:
amzn.to/2K36dJ5
ebay.com/itm/TS100-65W-MINI-Digital-OLED-Programmable-Soldering-Iron-Anti-static-Structure/113382669853

EEVBlog 121GW Multimeter:
eevblog.com/product/121gw

DSLogic Basic Logic Analyzer:
amzn.to/2RDSDQw
ebay.com/itm/USB-Logic-DSLogic-Basic-Analyzer-16Ch-100MHz-4Ch-400MHz-Xilinx-Spartan-6-FPGA/202543965672

Magnetic Screw Holder:
amzn.to/3b8LOhG
harborfreight.com/4-inch-magnetic-parts-tray-90566.html

Universal ZIP sockets: (clones, used on my ZIF-64 test machine)
ebay.com/itm/14-16-18-20-24-28-32-40-pin-IC-Test-Universal-ZIF-Socket-Fs/303206721971

RetroTink 2X Upconverter: (to hook up something like a C64 to HDMI)
retrotink.com

Plato (Clone) Side Cutters: (order five)
ebay.com/itm/1-2-5-10PCS-Micro-Scissor-125mm-PLATO-170-Electronics-Cutter-Side-Cutting-Pliers/163458746184

Heat Sinks:
aliexpress.com/item/32537183709.html

Little squeezy bottles: (available elsewhere too)
amzn.to/3b8LOOI

--- Links

My GitHub repository:
github.com/misterblack1?tab=repositories

Commodore Computer Club / Vancouver, WA – Portland, OR – PDX Commodore Users Group
commodorecomputerclub.com

--- Instructional videos

My video on damage-free chip removal:
youtube.com/watch?v=XQVjwPsVFd8

--- Music

Intro music and other tracks by:
Nathan Divino
@itsnathandivino
Restoring a Commodore 1702 monitor using a main board from 2023The PicoGUS: An ingenious multifunction ISA sound cardThe VIC-II Kawari is a game changer for the NTSC Commodore 64The IBM PS/1 was the followup to the disastrous PCjr and its pretty good!12V on a 5V line almost killed this Mac SE/30We ran Doom on a 40 year old printer controller (Agfa Compugraphic 9000PS)Adding a RGB input to a Sony Trinitron (KV-9PT60 / KV-9PT50)Leading Edge Model D RepairIs an IBM PC usable at the same clock speed as an Apple II?Is the Casablanca a disguised Amiga? Its complicated.Lets test a 50 year old MOS 6502 CPUThe TRS-80 Model 4 cant do this! The Frankenstein CoCo is alive again
Adrians Digital Basement |

Restoring a Commodore 1702 monitor using a main board from 2023

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