Yamaha R8 Problem

[new2diyBill]

I have a Yamaha R8, works fine except for volume and left channel not working.
Turning volume knob has no effect, except for maybe a pop here and there.
Pressing the "Simulated Stereo" button introduces normal behaviour.

Does anyone have an R8 schematic?

"rolibark" mentioned he had an R7 schematic, but the link is broken.

 

[madis64]

Is this the one?

https://www.hifiengine.com/manual_library/yamaha/r-8.shtml

 

[new2diyBill]

Yes. That is the model.

 

[madis64]

I was not asking about the site, I asked about the model...

 

[new2diyBill]

Yes, that is the model. Thank you for the schematic. Edited previous answer for clarity.

 

[madis64]

You should never edit your post that has been replied on - you make the responding members look stupid...

Good luck with the gear...

 

[new2diyBill]

Ok, won't do that again.

 

[madis64]

Pressing the "Simulated Stereo" button introduces normal behaviour.

That would be SW302 on the schematic:

 

[new2diyBill]

@madis64 Do you have the rest of the backside / solder side location diagram?
Not so sure anymore, pressing the Simulated Stereo had no effect.
Left channel weaker than right.

 

[madis64]

Full SM is too large for uploading here - send me a PM with your email address - 24 MB should pass through the mailservers still.