Pioneer SX-V300 receiver problem!

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Hi guys,

I need some help with a pioneer SX-V300 (~1984) receiver i recently aquired.

On the right channel, it sounds distorted (as if when your radio station is not tuned properly) and it happens on all input sources (CD, tape, phono, etc). The left channel appears to be fine. It is a 45Wx2 amp based on the STK4191II chip. I doubt it is the chip since it still sounds loud even with the distortion.

It would be much apprciated, if someone can shed some light on this issue. And hopeully a schematic if someone has one.

Thanks...:)
 

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