I have this amp which powers up and idles at 0.8A. Good rail voltage at about 96v. I removed the output fets which measure good, jumped the opamp and output pads to check the output drive; and found good strong clear square signal on all output gates.
I put the FETs backing the amp. Cleaned all switches and controls. I still cannot figure out why only half the waveform is on all speaker terminals as pictured. Amplitude changes with drive signal, and frequency input shifts the waveform indicating half the signal is going completely through the amp.
Why is this amp only outputting top waveform?
I put the FETs backing the amp. Cleaned all switches and controls. I still cannot figure out why only half the waveform is on all speaker terminals as pictured. Amplitude changes with drive signal, and frequency input shifts the waveform indicating half the signal is going completely through the amp.
Why is this amp only outputting top waveform?
