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previous: jens I put together the kamasutra '69 Fu... -- 7/3/2000 2:57 AM

Re: 69'pedal - crackly sounds

7/3/2000 5:29 PM
Stuart	Re: 69'pedal - crackly sounds Since none of the experts have responded, I'll have a go... Q2 is horribly misbiased. Somehow you have the collector lower than the base. Maybe you have a cold solder joint on Q2's collector resistor? For reference, the voltages in my PNP Fuzz Face are: Q1: C -0.65V B -0.10V E 0V Q2: C -4.43V B -0.65V E -0.52V Battery voltage 8.99V in circuit, 9.15V out of circuit. This Fuzz Face cleans up perfectly from the guitar's volume control. Hope that's some help - maybe R.G., GFR, Gus et al can sort it. Stuart

7/3/2000 5:29 PM

Stuart

Re: 69'pedal - crackly sounds

Since none of the experts have responded, I'll have a go...

Q2 is horribly misbiased. Somehow you have the collector lower than the base. Maybe you have a cold solder joint on Q2's collector resistor?

For reference, the voltages in my PNP Fuzz Face are:

Q1:
C -0.65V
B -0.10V
E 0V

Q2:
C -4.43V
B -0.65V
E -0.52V

Battery voltage 8.99V in circuit, 9.15V out of circuit. This Fuzz Face cleans up perfectly from the guitar's volume control.

Hope that's some help - maybe R.G., GFR, Gus et al can sort it.

Stuart

Replies:

jens Thanks for the meter readings! Good... -- 7/3/2000 9:25 PM
Mike Burgundy I'd say at least one of the trannie... -- 7/3/2000 9:29 PM