Help!!!! with a diagnosis Klone specialists needed!

[sdlogan9]

Hey Guys

  I have been scratching my head about this one for a day now.  I have built over 100 of these and never had this happen.  When the gain is off it seems to be semi normal.
as I turn up the gain it cleans up and gets a bit darker.  and as I keep turning up the gain around 3 O'clock the gain comes in and is super bright and brash.

I am not sure if its a mixed up part?
Or if its a bad part?
Or if it has to do with grounding?
Is it the new style of Orange LED I used for a first time? HAHA  I am really digging for the answer.

I built two in a row and put them in this enclosure and both times this was the result.

Power @ the Jack 9.39 Volts



Power @ the front of R28 ( 47r resistor )



Power after passing through R28 (47r resistor )



Power @ the 12v Zenner



Reading of R28 (47r resistor )

[midwayfair]

Did you use the same pots both times when you put them in that box? Could be a bad gang, or something shorted to the case.

[sdlogan9]

Did you use the same pots both times when you put them in that box? Could be a bad gang, or something shorted to the case.

I have a feeling it must be somthing shorted to the case or a bad ground or something.  This enclosure has a lot of paint and gloss on it.  Do you think that it might not be grounding very well?  Sand around the jacks?  I only seem to be having problems with this enclosure. 

[midwayfair]

Did you use the same pots both times when you put them in that box? Could be a bad gang, or something shorted to the case.

I have a feeling it must be somthing shorted to the case or a bad ground or something.  This enclosure has a lot of paint and gloss on it.  Do you think that it might not be grounding very well?  Sand around the jacks?  I only seem to be having problems with this enclosure.

No, your problem is clearly that the dual gang pot is malfunctioning in some way. You didn't actually answer my question -- did you use the same pots when you replaced the PCB?

[AntKnee]

Ive built a dozen or so klones on vero, and nearly all my problems came from the dual gang pot in some way.

[sdlogan9]

Did you use the same pots both times when you put them in that box? Could be a bad gang, or something shorted to the case.

I have a feeling it must be somthing shorted to the case or a bad ground or something.  This enclosure has a lot of paint and gloss on it.  Do you think that it might not be grounding very well?  Sand around the jacks?  I only seem to be having problems with this enclosure.

No, your problem is clearly that the dual gang pot is malfunctioning in some way. You didn't actually answer my question -- did you use the same pots when you replaced the PCB?

I actually used a different Dual gang pot when I re-built it.   I did build another pedal yesterday and everything worked as it should!