Well if C141 was ok till the power amp modules were connected, then that must have been what caused the overheating, or the cap was defective and putting the load on it made it go. Anyway, as it overheated and is now bulging, it needs to be replaced.
But one check you should make anyway: disconnect W102,W103 and W104. Measure the AC voltage from W102 to W103, then W102 to W104. The two measurements should be equal, post the results.
Swapping the connectors C189 and C230 would not be a problem. All connectors should be keyed so they can not go in backwards, that would be the only thing that could cause trouble.
For CN102 and CN103, pin 1 is +supply, pin2 is -supply.
With power off, measure voltage from each pin to ground. If there is any voltage, discharge it before connecting the modules.
When soldering the new IC's to the modules, make sure you discharge C2,3,4, &5 on the power module boards before installing the chips.
So, before installing the new IC's on the power board, discharge the caps on the module, then before connecting the modules, discharge the main supplies.
But one check you should make anyway: disconnect W102,W103 and W104. Measure the AC voltage from W102 to W103, then W102 to W104. The two measurements should be equal, post the results.
Swapping the connectors C189 and C230 would not be a problem. All connectors should be keyed so they can not go in backwards, that would be the only thing that could cause trouble.
For CN102 and CN103, pin 1 is +supply, pin2 is -supply.
With power off, measure voltage from each pin to ground. If there is any voltage, discharge it before connecting the modules.
When soldering the new IC's to the modules, make sure you discharge C2,3,4, &5 on the power module boards before installing the chips.
So, before installing the new IC's on the power board, discharge the caps on the module, then before connecting the modules, discharge the main supplies.
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