Ibanez SM-9

[zeta55]

http://www.angelfire.com/bc2/electronics/schems/ibnzsm9.html
Hi!
I have just finished this metal pedal. It's a good sounding one.
However I do have some trouble.
As the input J-fet I used a BF245, as the 2SK44C was hard to find. That part seems to work OK as both drive and attack pots works fine.
My concern is the Punch pot. When I change it I hear no affect on sound at all.
What should it do?
The Edge and Level pots allso works fine it's just that "punch"
Any help?

[Rob Strand]

Check the wiring and part values around that part of the circuit.  MAke sure you haven't got the pot wires switched. The control should work like a bass boost/cut control.

[zeta55]

Thanks for your reply. The wiring is checked several times. What I haven't check is the caps, maybe there's a faulty one..
At least now I know what it should do.