If you don't tell me EVERYthing you do to the amp while I'm trying to help, I can't possibly help.
tomorrow I continue, I appreciate your help although I don't know if it will be working, I haven't placed the output fets greetings
sorry i want to say that in the last part i have only changed the lm6172
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I don't see how it it could possibly work without having a square wave on pin 7 of U200 and U203.
With a triangle wave that has essentially no DC offset on pin 5 of those op-amps and 0v DC on pin 6, you should have a square wave on pin 7.
With a triangle wave that has essentially no DC offset on pin 5 of those op-amps and 0v DC on pin 6, you should have a square wave on pin 7.
hello again, i have managed to get these ripples on pin 7 of both u200 and u203 by changing the lm6172 again, this being careful not to damage them again, i made the mistake of not limiting the current, when i turn it on it generates a chirp in the fets of PS, it only does it when the lm6172 are in good condition, now I limit the voltage and current and only turn on to capture the waves on pin 7 of both ic's, but I don't know why the PS fets make that noise
Attachments
Is the amp producing audio?
Are the 6172s from a reputable distributor?
What waveform do you have on pin 2 of the 2 driver ICs?
Are the 6172s from a reputable distributor?
What waveform do you have on pin 2 of the 2 driver ICs?
I have not assembled it, it generates a sound in the PS stage, it is something like if some component will vibrate, at this moment I have out the rectifiers and the output fets. I buy the components in a store called AGElectronica, they are of good quality, the first ones were bought in a store right here, which is in the downtown area of my city.
Waveforms on the 4 banks of output FETs?
Black probe on the source leg and red on the drain.
Try working all pots and switches (repeatedly) through their entire range while listing for audio. Does audio ever play through at a high level?
I don't understand:
i see ps not pulsing
Black probe on the source leg and red on the drain.
Try working all pots and switches (repeatedly) through their entire range while listing for audio. Does audio ever play through at a high level?
I don't understand:
i see ps not pulsing