An externally hosted image should be here but it was not working when we last tested it.
Why aren't the inputs of the right/left channel symmetrical with regard to R552/R553 (47k).
The 27p cap (C529) is missing on one input, while the other has a 3.3p cap (C530).
What function does this difference preform? Can you remove/short out the caps (C529/530)?
Cheers,
Tom