Home Forums GuitarPCB Build Support SWAH – no effect (answered) Reply To: SWAH – no effect (answered)

#12562
wilkie1
Moderator

Ii believe your supply voltage is quite low.  Are you using a fresh battery or a power supply?  Your voltages for IC1 seem low.

Your chips do not appear to have any markings.  Is the LM13700 a good chip purchased from a reliable source?  This chip is known to have some bad clones.