Are you getting the correct voltage at Q501 emitter or R311, 312?
Expect +/-14V at these R's.
If the voltage is ok then best to follow the cleaning procedure outlined previously in this thread.
If the voltage is not ok then suggest you measure voltage at Q501 base at junction with R505.
Expect about 20V, if this is not OK then pull out R505 and R511 and replace C515.
Expect +/-14V at these R's.
If the voltage is ok then best to follow the cleaning procedure outlined previously in this thread.
If the voltage is not ok then suggest you measure voltage at Q501 base at junction with R505.
Expect about 20V, if this is not OK then pull out R505 and R511 and replace C515.