Quote:
Originally Posted by FrankM_
For me the 2 47 uF caps in the middle needed replacing (due to a previous overvoltage), they can only withstand 16V. So I replaced those with 2x 47 uF 63V electrolytic capacitors to be more resilient to voltage peaks.
Then the reference cap on the lower right side of the board that feeds the FET transistor and has 'one leg up' (not going through the PCB) : 1x 0.1 uF radial 250V (as that was the only radial type available, lower voltage is OK here).
And : good varnish/paint remover ! As yes, I did remove all varnish from the backside and resoldered all contacts (takes about half an hour).
Didn't tough anything else and brought my 2 control units back to life this way.
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thanks !!!
what did you do to remove all the old varnish ??