Water damaged Mark Levinson 331 found me and I hope I can bring her back to life again. I washed all water marks and junks from water. Luckily, all transformers are OK but dirty water ate up leads of some parts on the power supply/ protection board. I do not have schematic to refer. Missing parts are near 5 volt voltage regulator. If someone can share schematic or just picture of power supply/ protection board around 5 volt voltage regulator, I will really appreciate.
Thank You in advance.
Thank You in advance.
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I spotted your post earlier. Water damage, and particularly where electrolysis has occurred is hard to put right. The corrosion eats into PCB print too. A starting point is washing a board (maybe with foam cleaner first) and then rinsing and drying.
I've worked on more "liquid damaged" items than you can shake a stick at over the years and its always bad news in severe cases. Problems can keep appearing.
I've worked on more "liquid damaged" items than you can shake a stick at over the years and its always bad news in severe cases. Problems can keep appearing.
If it was completely switched off it would been easy clean off and few repairs. This amp was in stand-by mode and all the bad things happened while electricity is flowing. Any parts with high supply voltage ( 20v DC or higher on this amp) was cooked and PCB was etched. Luckily ML331 did not have SMD's and high density PCB traces even though they would not release schematics. Wish me luck.
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