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A broken HP 33120A
vaualbus:
Indeed and after I have fixed all the broken pads with some "surgery", I still have the output amplifier not working :-DD :-DD :-DD
I would say, nothing really changed :-DD
Basically I see that I have a signal driving Q709 but no signal on the base of Q710 :-//
I am worried that the DAC is generate a too low voltage, the SM said it should generate a 800 to 1Vpp signal but when I probe DACOUT+,DACOUT- I see only a 300mVpp signal. Now the DAC is generating an output current so it can be that I am not measuring the voltage using the correct ground.
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