Motorjoy GTO-8672 car amp

[S Merlington]

Anyone know the value of this resistor?

It connects between the RCA shield ground and the non briding speaker terminals..

Im getting -13.82 volts on the rca shield ground

 

[S Merlington]

Ok figured this amp out it was a 220 ohm resistor ..

I also replaced the diode for the -15 volt supply ..

Now I get clean audio out of the left channel but the right channel has very low output.

Any ideas what might cause this since I can't find anything wrong

 

[Perry Babin]

Is the low channel perfectly clean but simply has lower gain?

Are Q12 and Q13 the muting transistors?

 

[S Merlington]

I found the problem all 3 opamps were defective ..

I think someone hit the power wire on the RCa shield ground ..

Since I had to replace the following

3 opamps
The 220 ohm resistor
1 diode that is for the regulator circuit
And had to fix the burnt traces on the board that connect to the rca shield grounds