marcelnl
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agree, if you measure a uniform voltage being created over both I/V resistors the output caps (or the soldering) are the most likely candidate...
Depending on how you connected those I'd work my way back from the output towards the I/V resistors, chcking everything with your DMM and resoldering all joints and checking for shorts.
TDA 1543 will come cheap, that is the good news, but you could swap the TDA 1543s between both channels to see whether that is the issue.
BTW the cost of replacement parts is not going to be that much, one way shipping should be bearable too....
Hope this helps
Depending on how you connected those I'd work my way back from the output towards the I/V resistors, chcking everything with your DMM and resoldering all joints and checking for shorts.
TDA 1543 will come cheap, that is the good news, but you could swap the TDA 1543s between both channels to see whether that is the issue.
BTW the cost of replacement parts is not going to be that much, one way shipping should be bearable too....
Hope this helps