Ok. Thanks for this.
Two points to note.
1) Next time you have to do this, write down the pin number and voltage in columns. We don't know what is your left and right.
For example:
1 = 48mV
2 = 39V
3 = -39.2V
2) Pay attention to the sign of the voltage shown on your DMM. Sign is very important!
Ok. On with the diagnosis. Do not connect a loudspeaker to the outputs. 39V on pin-4 is enough to blow the speaker.
Measure the voltage at each leg of R511 and R533 with respect to GND.
Report this as
R511-A =
R511-B =
where A is closest to IC501 and B is away from IC501.
Do the same for R512 and R534.
Two points to note.
1) Next time you have to do this, write down the pin number and voltage in columns. We don't know what is your left and right.
For example:
1 = 48mV
2 = 39V
3 = -39.2V
2) Pay attention to the sign of the voltage shown on your DMM. Sign is very important!
Ok. On with the diagnosis. Do not connect a loudspeaker to the outputs. 39V on pin-4 is enough to blow the speaker.
Measure the voltage at each leg of R511 and R533 with respect to GND.
Report this as
R511-A =
R511-B =
where A is closest to IC501 and B is away from IC501.
Do the same for R512 and R534.