Speaking of HIP4080 and the curse, I ran into a NX750D. Blown outputs.
Replaced all the outputs with IRF3710Z, and a new HIP4080.
All i get is a loud white noise from the output coil.
Some quick scope shots determined the gate drive going to one-half the outputs is nothing but biased noise.
Further checks on the input side of the HIP4080 +IN pin is nothing, which its supposed to be the oscillator.
The oscillator isnt running. Any ideas? Sometimes the amp will power up with no noise at all, but either way the oscillator is not running.
I see a CD4013 D-type flip flop which I assume is the oscillator? voltages are present but no oscillations. Nothing on the clock input, which appears to come from the LM393 IC3C
I am at a loss. any ideas?
Replaced all the outputs with IRF3710Z, and a new HIP4080.
All i get is a loud white noise from the output coil.
Some quick scope shots determined the gate drive going to one-half the outputs is nothing but biased noise.
Further checks on the input side of the HIP4080 +IN pin is nothing, which its supposed to be the oscillator.
The oscillator isnt running. Any ideas? Sometimes the amp will power up with no noise at all, but either way the oscillator is not running.
I see a CD4013 D-type flip flop which I assume is the oscillator? voltages are present but no oscillations. Nothing on the clock input, which appears to come from the LM393 IC3C
I am at a loss. any ideas?