Fuzz Face issues: 9v @ Q2, no sound, switch pop....

Started by DJPsychic, August 02, 2020, 02:14:03 PM

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DJPsychic


antonis

"I'm getting older while being taught all the time" Solon the Athenian..
"I don't mind  being taught all the time but I do mind a lot getting old" Antonis the Thessalonian..

DJPsychic

Quote from: antonis on August 05, 2020, 08:52:28 AM
Quote from: DJPsychic on August 05, 2020, 08:47:07 AM
Are there issues?

In case of shorts, yes..
(but who knows..) :icon_cool:

I think they're ok but I will check Thanks

I'm going to replace to trimpot, if that doesn't solve issue you could be right.

I've done this circuit before with no issues so not sure whats going on

DJPsychic

Replaced 10k trim pot and checked solders, still getting 9v @ Collector of Q2

Not sure where to go next, aside from redoing the entire thing  :icon_eek:


antonis

!!! urgent !!! !!! urgent !!!   !!! urgent !!!   !!! urgent !!!  !!! urgent !!!   !!! urgent !!!  !!! urgent !!! !!! urgent !!!   !!! urgent !!!Whip off Collector from 9V..!! 

!!! urgent !!! !!! urgent !!!   !!! urgent !!!   !!! urgent !!!  !!! urgent !!!   !!! urgent !!!  !!! urgent !!! !!! urgent !!!   !!! urgent !!!
"I'm getting older while being taught all the time" Solon the Athenian..
"I don't mind  being taught all the time but I do mind a lot getting old" Antonis the Thessalonian..

11-90-an

Oh no trannie go bye bye

If your transistor survives, good for you!  :icon_eek:
flip flop flip flop flip

DJPsychic


antonis

Quote from: DJPsychic on August 08, 2020, 07:33:28 AM
OK, so why is it getting 9v?

Maybe 'cause there isn't any voltage drop across its resistor which should make us think for the case of NO current flowing through Collector resistor..??
(just a thought..)

If, I say IF, there isn't any current flowing from Collector to Emitter, there should stand a variety of cases/assumptions..

P.S.
Get rid of trimpot and decoupling cap, place a 470R - 560R resistor in series between Q2 Emitter and GND and come back to tell us what happens .. :icon_wink:
"I'm getting older while being taught all the time" Solon the Athenian..
"I don't mind  being taught all the time but I do mind a lot getting old" Antonis the Thessalonian..

DJPsychic

#28
It doesn't make sense because I've made this circuit many times, makes my brain hurt :)


thank you the suggestions.

antonis

Didn't hear anyone telling you about particular circuit problem..
On the contrary, I DID hear some guys telling you about particulal buid issues..
"I'm getting older while being taught all the time" Solon the Athenian..
"I don't mind  being taught all the time but I do mind a lot getting old" Antonis the Thessalonian..