kinergetics kba200 needs repair/parts. Please adv

I am not sure how the left channel was damaged but I see several resistors are burned. Any advice on how to proceed would be appreciated. I know the company no longer exists, and am wondering if it would be financially feasible to repair or just call it a loss. Who can do this kind of repair? Thanks
Did you ever locate someone to repair it?  I have one that has a slight hum at idle.  Thanks, JIm