Hi All. Om working a Chinese lab clone Model Fp20k. 3 of the channels wont output more than approx half volume. The rail voltages on the output transistors dont cross +40 x -40 Volts dc. I have encountered this problem before but with a distorted sinewave. NEVER WITH A CLEAN SINEWAVE. IT JUST GOES TO APPROX HALF POWER AND STOPS at approx 65AC output. The problem is coming from the power amp board, Not the preamp.
Does anyone have any suggestions?
Thank you.
Does anyone have any suggestions?
Thank you.