SONY TA-VE800G Need help fixing

Hi,

A friend of mine bought a defective SONY TA-VE800G, since it fits the look of his other Hifi Components (Yes I know...)

The right channel is very distorted and has almost no power, at first I thought that would be an easy job, replacing a transistor or a cap.

But since the problem is not comming from the preamp nor the power amp, I am a bit clueless, maybe someone has an idea?

Also I have a quick question on the side, that "AV Reciever" doesn't have any surround input, so how the heck does it make surround sound?!


Greetings,

Plermpel