Predator99 wrote:Hehe yes sure I will try and already made some cleaning and it looks much better now. However no idea how to get rid of the rema […]
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CkRtech wrote:Deksor wrote:@Predator99
I wonder if that card could be fixed, maybe the traces aren't damaged too badly and all it would need would be a good cleaning ?
It looks like it could be quite a challenge - he could clean the corrosion and rust off and see what is still left underneath...
Hehe yes sure I will try and already made some cleaning and it looks much better now. However no idea how to get rid of the remaing parts. Tried vinegar, water with detergent, alcohol, benzine...and put the outer parts in an ultrasonic batch. Nothing to loose here 😉
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Gave it a try...as expected it is not detected.
Traces does not seem to look this bad. However, at least one resistor is missing and most of the caps also seem to be destroyed.
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Good news: The OPL2 card survived the cleaning procedure and is running 😀
Go to an auto parts store and buy some battery acid (might be sold as "car battery electrolyte") and some WD40 Contact Cleaner (not the blue can, the silver one). using a toothbrush and the battery acid, scrub the rust and oxide off the card. Don't let the acid stay on the card too long. Put some on, rub with toothbrush and rinse it off using the WD40 contact cleaner.
The battery acid (H2SO4 20% solution) inactivates the rust and the WD40 contact cleaner cleans off what's left, as well as the white acid salt deposits.
If battery electrolyte is not sold in your country get a hold of an old car battery and crack it open 😀 - or see if you can get some vitriol (H2SO4) or nitric acid (HNO3) solution from a pharmacy. Make sure they are diluted (20% for the vitriol, 10% for the nitric acid) or it will start to eat trought the copper. And use gloves.