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オリジナル投稿者: Rany ,

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Thanks for your reply. I'll actually save it for next time I have corrosion on the ISL or it looks like it's messed up.

I don't have the board anymore. When I did, I downloaded the schematics, tested the resistors, and continuity on most of the ISL circuit. I'm new to this so I probably missed a few things. I don't remember the voltage measurements that I took, but I certainly did not work in the systematic manner that you describe. I did want to replace U7000 to see if that would fix it, but could not for lack of replacement parts. And since this board was so old, and the owner was not ready to afford the time to wait for me to source a donor board, I decided I will give it back. Sometimes I do repairs for the purpose of learning, but not in this case.

Thanks again.

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