Cheers.Check for DC voltages on the Pre/Power Amp jumpers with the BYPASS Switch OFF then ON (even though DC should be blocked by the coupling caps).
Post the results.
Was the amplifier functional before the re-cap?Should be mentioned that i just recapped the whole amplifier.
Double checked for caps in wrong direction and so....
I suspect might IC 705 can be involved.
Since it's connected to r channel, and somehow low level function.
Since it's sometimes goes into low level, before std by....
Nice diagnostic work! Now you need to find the problem.I removed the pre out / main in link.
R pre out to left input plays well.
L pre to L main input same.
L pre to R main shuts down.
R pre to R main shuts down.
Also used another pre amplifier directly to main input, and it goes in std by