Hi All. I’m having a problem with squealing on my the ratt pedal I just finished. Video and gut shot attached. I’m very new to guitar pedal building, but have a technical background (just not in electrical). I can only troubleshoot using “continuity” mode via my multimeter, so I can’t provide voltages, etc. I can hear the distortion as the pedal is intended to make, and it sounds great, but with background squeal. Squeal becomes more acute when the pedal is in bypass.
Further, the parts I received in the kit were for the ORIGINAL Rat pedal, not what was listed from guitarpcb.com.
Hopefully, it’s an obvious fix. Thanks and hit me up with any questions. Jeremy
OK. You may have a bad or incomplete ground. Please check all ground connections. Remove power and the IC and transistor (you DID use sockets?). Resolder all joint and then restore components and power. Retest and report if you are getting signal through in both bypass and effect settings.