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Re: 386 board dead?

I have fixed dozens of small 386 boards like this one, I had similar cache \ tag issues as above on a few. I'd highly recommend checking the legs on the chipset. They become loose due to the board flex of inserting ram\transporting etc. Find yourself a digital scope and start probing each leg and …

Re: IBM 5150 Issues

Sounds like you have a dead short somewhere. I would be getting the power supply overhauled for starters. They have a couple of rifa's and aging capacitors. Motherboards are pretty reliable, but suffer from oxidised ram sockets\bios sockets. I have seen a few tantalum caps go on them.. only if not …

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