So I recapped, cleaned it up, plugged it in and it worked!
Well for about 60 seconds and then the TC8 tanty once again popped, sending glowing sparks of metal across the room.
The Blue cap is what was replaced. The Yellow is the replacement. They look the same to be.
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The attachment Photo Jul 31 2025, 8 00 57 PM.jpg is no longer available
The 74LS245 that I replaced doesn't seem to have any shorts and isn't even connected to 12v or -12v.
At rest, Ground is not connected to +12v or -12v
The answer has to be that one of the IC's on board is pulling a lot of power on +12v , right?
Edit - I found something -- +12v doesn't go to most grounds, but it does go to B31 , and B31 goes to ....
scratch that, +12V goes to B31 on both cards--
Scratch that, B10 goes to B31, not B09 which is +12v. This one is driving me crazy--