Anyone with older Mark IV's send em to Mesa

  • Thread starter Thread starter anomaly
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I just pulled these caps. They have leaked, electrolytes has corroded / darkened part of the traces beneath them, but not too bad (the amp sounded good without unusual hum / noise). I’ve cleaned up the board real good with isopropyl alcohol. Now I need to lift the board to clean the other side of the board.

Can anyone that has taken the board off the chassis share some experience? I’m worried I’d miss something and won’t be able to put it all back together.
 
I've seen the video of someone removing that board. I wouldn't do it myself. A lot going on there.
Could you clean it on its side with spray ? Wouldn't be the same. But save a lot of work.
 
stephen sawall said:
I've seen the video of someone removing that board. I wouldn't do it myself. A lot going on there.
Could you clean it on its side with spray ? Wouldn't be the same. But save a lot of work.
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That's a good idea. Is there a solution that would neutralize the oil / electrolytes that has leaked out? I just don't want anything left down there, it could continue eating everything it has contaminated.
 
BoogieEngineer said:
That's a good idea. Is there a solution that would neutralize the oil / electrolytes that has leaked out? I just don't want anything left down there, it could continue eating everything it has contaminated.
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I would like to know myself. It would be useful beyond this issue.
 
I wonder how severe is the risk of the leaked electrolyte continuing to corrode the solder joints and traces on the other side of the board? Would it flow everywhere with time and destroy everything in its path?
 
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