Uploaded December 2024 | Updated September 2026, 1 week ago
I have a stack of DOS-era motherboards that need repairs. Some of them may be as simple as replacing a missing chip. Others may be battery-bomb specials with concealed damage. None were guaranteed to ever work again.
Will I manage to get any motherboards working? Will I be able to repair all of them? You'll have to watch to find out!
*
Ways to Support the Channel:
☕️ Tips or Support via Ko-fi: ko-fi.com/jdmcs
🈷️ Support me on Patreon: patreon.com/jdmcs
📦 Amazon Wishlist: jdmcs.net/wishlist
... or simply do the YouTube things: Like/Dislike, Comment, Subscribe, Enable Notifications, and participate in the Chat. These things help the channel, too!
**
Read Computerized Start™, my Official Blog: jdmcs.net/myblog
Follow me on Instagram: jdmcs.net/myinstagram
Follow me on Twitter: jdmcs.net/mytwitter
I have a stack of DOS-era motherboards that need repairs. Some of them may be as simple as replacing a missing chip. Others may be battery-bomb specials with concealed damage. None were guaranteed to ever work again.
Will I manage to get any motherboards working? Will I be able to repair all of them? You'll have to watch to find out!
*
Ways to Support the Channel:
☕️ Tips or Support via Ko-fi: ko-fi.com/jdmcs
🈷️ Support me on Patreon: patreon.com/jdmcs
📦 Amazon Wishlist: jdmcs.net/wishlist
... or simply do the YouTube things: Like/Dislike, Comment, Subscribe, Enable Notifications, and participate in the Chat. These things help the channel, too!
**
Read Computerized Start™, my Official Blog: jdmcs.net/myblog
Follow me on Instagram: jdmcs.net/myinstagram
Follow me on Twitter: jdmcs.net/mytwitter



![COMPUTER Repair: Three Rows of Sockets To Go In My MCA Apple ][+ Clone (Computerized Start™ Live)
If COMPUTER, my MCA Apple ][+ Clone, could sing, it might be singing:
Desolder me down (Repair)
You desolder me, you desolder me
Or something like that...
Theres three rows of bad sockets left in COMPUTER, so the project to replace all the original sockets is in the home stretch. With each new row of sockets, both the appearance of the motherboard and my confidence in a fully-working COMPUTER increases. Maybe tonights the night.
Will I get the remaining sockets replaced tonight? Will I be able to test the board? Will I find a mistake the had way? Youll have to watch to find out!
*
Use discount code JUSTINTIME for for 5% off all Computerized Start™ merchandise at https://shop.jdmcs.com.
*
Ways to Support the Channel:
☕️ Tips or Support via Ko-fi: https://ko-fi.com/jdmcs
🈷️ Support me on Patreon: https://www.patreon.com/jdmcs
📦 Amazon Wishlist: https://jdmcs.net/wishlist
... or simply do the YouTube things: Like/Dislike, Comment, Subscribe, Enable Notifications, and participate in the Chat. These things help the channel, too!
**
Read Computerized Start™, my Official Blog: https://jdmcs.net/myblog
Follow me on Instagram: https://jdmcs.net/myinstagram
Follow me on Twitter: https://jdmcs.net/mytwitter COMPUTER Repair: Three Rows of Sockets To Go In My MCA Apple ][+ Clone (Computerized Start™ Live)](https://i.ytimg.com/vi/LEtutHlUnMs/mqdefault.jpg)


![COMPUTER Repair: Did I Use the Wrong Types of Chips Elsewhere? (Computerized Start™ Live)
I thought I was nearing completion of my restoration of COMPUTER, the name I have given to my Apple ][+ clone made by MCA of Japan... that is, if the silk screen on the motherboard can be trusted. And Im going for a restoration here, with exceptions made for adding a Super Serial card and any expansion cards needed to make the ones that were included work.
Last week, after confirming that my other clone board works, we tried to swap chips between COMPUTER and the working clone board. After not having luck with any of the expected chips, and even less than expected chips, I managed to notice that I had a 74S195 installed in COMPUTER where the working clone board had a 74LS195... and when I swapped those two chips, the fault on COMPUTER changed. Better yet, that swap seemed to fix the mysterious zero page errors in Dead Test.
This begs the question: did I install the wrong type of chip anywhere else on COMPUTER?
Will we find the bad logic chip? Will I find more bad 4164s along the way? Will that Disk ][ Controller Card start working in COMPUTER? Youll have to watch to find out!
*
Ways to Support the Channel:
☕️ Tips or Support via Ko-fi: https://ko-fi.com/jdmcs
🈷️ Support me on Patreon: https://www.patreon.com/jdmcs
📦 Amazon Wishlist: https://jdmcs.net/wishlist
... or simply do the YouTube things: Like/Dislike, Comment, Subscribe, Enable Notifications, and participate in the Chat. These things help the channel, too!
**
Read Computerized Start™, my Official Blog: https://jdmcs.net/myblog
Follow me on Instagram: https://jdmcs.net/myinstagram
Follow me on Twitter: https://jdmcs.net/mytwitter COMPUTER Repair: Did I Use the Wrong Types of Chips Elsewhere? (Computerized Start™ Live)](https://i.ytimg.com/vi/LeWFywasgPg/mqdefault.jpg)

![Lets Unbox an #AprilApples ][+ Goodie Box, and Go From There! (Computerized Start™ Live)
Ive launched a merch shop: https://shop.jdmcs.com - use code APPLEFOOLS for 7% off all April Apples merchandise through April 30th!
*
A viewer sent me a goodie box, containing parts that need work. The end goal: an Apple ][+. Lets see whats inside, and what work lies ahead. Well also probably look at COMPUTER, as I know I need to order parts for it as well.
What parts are in the box? How bad could it be? And how many of COMPUTERs chips are now testing bad tonight? Youll have to watch to find out!
*
#AprilApples Event Logo concept and design by myself and is available at https://aprilapples.net for use with attribution when you create AprilApples content.
*
Ways to Support the Channel:
☕️ Tips or Support via Ko-fi: https://ko-fi.com/jdmcs
🈷️ Support me on Patreon: https://www.patreon.com/jdmcs
📦 Amazon Wishlist: https://jdmcs.net/wishlist
... or simply do the YouTube things: Like/Dislike, Comment, Subscribe, Enable Notifications, and participate in the Chat. These things help the channel, too!
**
Read Computerized Start™, my Official Blog: https://jdmcs.net/myblog
Follow me on Instagram: https://jdmcs.net/myinstagram
Follow me on Twitter: https://jdmcs.net/mytwitter Lets Unbox an #AprilApples ][+ Goodie Box, and Go From There! (Computerized Start™ Live)](https://i.ytimg.com/vi/MpH96lHhHis/mqdefault.jpg)

