Uploaded April 2026 | Updated September 2026, 2 weeks ago
I've counted them, and if I could get hold of Count Von Count, I'm sure he would agree - the LC 475 has eleven little capacitors (ah ah ah! thunderclap!)...
As of 2026, they're all leaking. And unless your board somehow won the capacitor lottery during manufacturing, your logic board is no different.
My small stack of LC 475 logic boards is down to one that need to be recapped. Let's tackle recapping this last one tonight, and see if I can get the Dealer Upgrade LC 475 chiming again! Or at the very least, get a feel for which of the three boards is repairable, and which may be suitable parts donors.
Will there be any bad traces? Will I melt plastic? Will the board work once I am done? You'll have to watch to find out!
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#MARCHintosh Event Logo concept and design by Javier Rivera | YouTube: youtube.com/@ARCJavMaster | Twitter: @javmast3r
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Read Computerized Start™, my Official Blog: jdmcs.net/myblog
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I've counted them, and if I could get hold of Count Von Count, I'm sure he would agree - the LC 475 has eleven little capacitors (ah ah ah! thunderclap!)...
As of 2026, they're all leaking. And unless your board somehow won the capacitor lottery during manufacturing, your logic board is no different.
My small stack of LC 475 logic boards is down to one that need to be recapped. Let's tackle recapping this last one tonight, and see if I can get the Dealer Upgrade LC 475 chiming again! Or at the very least, get a feel for which of the three boards is repairable, and which may be suitable parts donors.
Will there be any bad traces? Will I melt plastic? Will the board work once I am done? You'll have to watch to find out!
*
#MARCHintosh Event Logo concept and design by Javier Rivera | YouTube: youtube.com/@ARCJavMaster | Twitter: @javmast3r
*
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



![Fixing My Apple ][+ and COMPUTER Using eBay: Im Already Regretting It! (Computerized Start™ Live)
YouTube started having ingest issues while I was doing the Wheel of Regrets! segment. This VOD resumes where Wheel of Regrets! left off in the first attempt: https://youtube.com/live/e2C_R8njKkQ
At least I cant blame my USB microphone this time around...
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Ive launched a merch shop: https://shop.jdmcs.com - use code APPLEFOOLS for 7% off all April Apples merchandise through April 30th!
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Adam sent me an Apple ][+ that needs repairs, and COMPUTER is suffering from bad 74LS-series chips. Can I fix both computers using eBay (the place where I buy things I later regret)? Maybe. But the more important question is, Will there be regrets along the way?
Will COMPUTER say COMPUTER again? Will the Apple ][+ say APPLE ][ again? Will all the parts even arrive in time for this stream? Youll have to watch to find out!
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#AprilApples Event Logo concept and design by myself and is available at https://aprilapples.net for use with attribution when you create AprilApples content.
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Ways to Support the Channel:
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... 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
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![COMPUTER Repair: The Saturn 128K Card Clone Has Bad RAM... Lets Fix It! (Computerized Start™ Live)
I was going to look at a different project tonight, but that was before I started looking at the Saturn Card clone on Daves stream yesterday.
Let me back up: I am 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.
And the Saturn 128K RAM card was a 128K RAM expansion board for the Apple II series of computers from Saturn Systems. It features 128K of RAM, and, when installed in Slot 0, can take the place of the Language Card for loading Integer Basic. It also features its own DRAM refresh circuit, so a connection to the RAM chips on the motherboard is not needed.
COMPUTER included a clone of the Saturn 128K RAM card, with MCA branding, so I really want to get it up-and running... despite having a clone from Garretts Workshop that is more power efficient. During Daves stream, I found that the card has a bad 74LS02 chip, as well as at least 4 bad DRAM chips.
I guess we better get bust Retro Chip Tester MemTesting to potentially complete this restoration tonight!
Will I find at least half of the DRAM chips to be bad? Do I have enough 4164s to replace any bad DRAM chips I find? And will the memory card pass MECC Computer Inspector after replacing the bad chips? Youll have to watch to find out!
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Ways to Support the Channel:
☕️ Tips or Support via Ko-fi: https://ko-fi.com/jdmcs
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... 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: The Saturn 128K Card Clone Has Bad RAM... Lets Fix It! (Computerized Start™ Live)](https://i.ytimg.com/vi/8qGzv41khTs/mqdefault.jpg)