Hi I have a Digitech Grunge distortion pedal. The other day I was showing it to a guy who might have wanted to buy it. I did not have a battery so like an idiot the guy jumpt up and ran and got a wall adapter(not desined for pedals) I told him to let me look at it before he pluged it up but it was too late he had just pluged it up. he turned on the amp and of course it did not work.The LED indicater light would not come on and the pedal would not work. I quikly unpluged the adapter. I looked and the polarity switch was not the way it should have been and the voltage was set a 5V. I went and got a real 9V battery and pluged it up. Once more the light would not come on and nothing would work. Finaly I pressed and held down the pedal and sound came out of the amp but the light still would not come on and the knobs did nothing. Can this be fixed? if so how?
Hey bud. Wow the Net is useless for finding schematics I've been looking for a while now and all I can find is "hook up schematics" (plug your guitar into the input of pedal. Guitar cable from output of pedal to input of amp). WOW! If you need a schematic to figure that one out... I could say some choice phrases! LOL! Anyway I have no idea where my old digitech schematics went because I did a lot of repairs on guitar equipment in the past. Ofcourse though I cant seem to find them.
To the best of my memory a guy brought me a black cat moan wah pedal quite a few years ago. They accidentally plugged an 18 volt top positive adapter to the pedal that needs a 9volt tip negative. It was a long time ago but from what i think i remember is it fried a diode, one or two caps, and a transistor...
Anyway just follow the standard troubleshooting procedure. 1) Physical "switches, jacks" you have the advantage of knowing that it was the wrong adaptor. So go and check the components from the adapter jack and keep going. Sooner or later you'll come across you problem component(s).
Sorry I’m not of more help. I have not done any repairs in electronics in about 5 years so I'm really rusty! But if you’re looking the problem you'll find it. Just use your trusty multimeter. Hope that helps.
ps. Most digitech pedals are fairly cheap $40 or $60 and you can buy a new one for the cost of parts and time.
The Bass-Fuzz circuit distorts all frequencies, not just bass. Try the simple Bass-Fuzz circuit. Switch from one fuzz circuit to the other fuzz circuit.
Too much distortion will make your guitar sound flat and muddy with no tone or definition. Get a pedal with a tone that works really nice with your guitar and amp.
Guitar Effects pedal problems.
Posted - Dec 13 2006 : 6:25:32 PM
