I recently won an IMSAI front panel board on eBay. Just received it in
the mail today and
boy is it in bad shape. Looks like it was sitting around unprotected
for the last 25 years.
Could of even been outside.
I'm curious how some of you would go about restoring this board. All of
the LED and capacitors
were bent over. Some caps are chipped and cracked. I was able to
straighten out the LED's without
breaking any pins (hopefully). The top of the board has a thick film of
dirt and grit. All of the IC's
Here's my plan of attack:
- Brush down the board with a clean paint brush and remove all the
- Blow the board off with an air nozzle from my compressor. The
compressor does have a oil and water filter.
- Immerse board in a PCB cleaner solution and scrub with a tooth
- Remove all of the IC's (Can't remove the 8255 without unsoldering
- Do another board wash.
- Clean S100 connector with pencil eraser to clean up contacts.
- Insert board in backplane and test the 7805 voltages. Replace if
I was considering replacing all of the LED's, filter capacitors and
I'd really like to remove the 8255 socket and replace with a low
The current socket is preventing the two switches from lining up with
the others. They stick up about 1/32 of an inch. The switches are
resting on the 8255.
I'm a bit nervous about unsoldering and replacing components not
knowing what sort of abuse the traces can take.
Your words of wisdom and experience is greatly appreciated.