Repairing Fuyu 20V0 and SD-P5TA Motherboards \ VOGONS

Repairing Fuyu 20V0 and SD-P5TA Motherboards

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First post, by Skelefits

Posted on 2021-12-29, 00:51

Skelefits Offline

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I’ve got two motherboards I’d like to try to repair.

The first is a Fuyu 20V0 with an embedded AMD 386 DX-40.

I’ll remove whatever is socketed and then use a soft toothbrush to give a surface level clean with white vinegar. I’ll follow the vinegar with 99% isopropyl alcohol.

Next I’ll place the board in an ultrasonic cleaner with distilled water. After that I’ll desolder whatever looks damaged and go from there.

Is this a good starting procedure?

The other board I’ve got is a Socket 7 SD-P5TA. It has green stuff on it, but I’ve got no idea where it came from. Nothing looks wrong with the battery holder.

This one looks painful as there are a bunch of surface mounted resisters. Two are so corroded I can’t tell their values.

Reply 1 of 3, by Horun

Posted on 2021-12-29, 02:18

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🤣 looks like a cricket or micro mouse parts caused it. Had a mid tower a mouse climbed thru an open ISA slot in back and pee-poo all over the side of the board....
corroded it badly... funny now but not back then...

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Hate posting a reply and then have to edit it because it made no sense 😁 First computer was an IBM 3270 workstation with CGA monitor. Stuff: https://archive.org/details/@horun

Reply 2 of 3, by BitWrangler

Posted on 2021-12-29, 03:33

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Hope the fuyu isn't an f.yu .... I <3 those mini 386 boards... before mp3 players, it did cross my mind to build one into the dash of a car to play mods

Unicorn herding operations are proceeding, but all the totes of hens teeth and barrels of rocking horse poop give them plenty of hiding spots.

Reply 3 of 3, by Skelefits

Posted on 2021-12-29, 12:13

Skelefits Offline

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Horun wrote on 2021-12-29, 02:18:
🤣 looks like a cricket or micro mouse parts caused it.

That must be it. I found the board in a plastic bag in the shed.

I realized today that my two 86 computers would also have batteries in them, so I rushed down to check. A tower with a Faraday FE2010A chip had a leaking battery, but it doesn't seem to have reached the board. It does have corrosion on an ISA and co-processor slot though. The board seems to have some kind of finish of the PCB. It looks like it would be really nice to work with.