Crackling noise?

[radioheadftw]

I built another FF this time with NTE158 transistors...
Bypass works fine, when I turn the effect on all I hear is crackling.
What are some debugging tips?

Tonepad schematic was used.

[kurtlives]

Crackling or buzz?

Crackling usually means some DC signal is getting through the pedal...

Go through the debugging process....schem, voltages, layout, mods, etc...

[radioheadftw]

It's a crackling-ish noise, no buzz, but it kinda crackles.
Transistor is dead?
How would I measure if my transistors work or not?
After that I'll go into the other measurements, voltage, continuity, etc.

[kurtlives]

Transistors usually don't "die". It is easier to destroy germanium transistors with heat though. Did you socket?

On RG Keen's site (geofx) there is an article about testing transistors.

[radioheadftw]

No, no socket.
I might have burned them out, since they are Ge.

[R.G.]

Most of the time, crackling is an intermittent contact, not a dead transistor. Not that it couldn't be a transistor, but I'd look for bad solder joints, cracked PCB traces and broken component leads first. if it were mine.