Author Topic: Problem with my pedal... Extreme distortion.  (Read 4290 times)

Muthauzem

Problem with my pedal... Extreme distortion.
« on: May 25, 2007, 09:46:14 PM »
It's been a week or two that I've build the NPN Booster...

It worked very fine... but I didn't have an enclosure to put the whole thing...

Today I got an plastic enclosure... I drilled it, covered it with Aluminium Foil and fitted everything inside...

But the 47uf capacitor didn't let me screw the pot properly. So I desoldered it and soldered in the back of the pot...

When I was testing it, the sound seemed extremely distorted... Really really distorted... Not even close to the effect I got when I first built it..

I tried to change the transistor, tried to remove the pedal from the enclosure, checked a lot of times to see if there wasn't something in short... but I have found nothing...

Anyone can help me?

aron

Re: Problem with my pedal... Extreme distortion.
« Reply #1 on: May 25, 2007, 10:11:20 PM »
The only thing that could get damaged is the transistor. Other than that, check your solder joints, maybe something came apart.

Might be time to check this out:

http://www.diystompboxes.com/smfforum/index.php?topic=29816.0

Sir_Edward_V

Re: Problem with my pedal... Extreme distortion.
« Reply #2 on: May 26, 2007, 03:26:24 PM »
the 47 uF cap is an e-cap isn't it?

I'd say make sure you didn't put it back on backwards

aron

Re: Problem with my pedal... Extreme distortion.
« Reply #3 on: May 26, 2007, 08:02:20 PM »
Hey, good call!

Muthauzem

Re: Problem with my pedal... Extreme distortion.
« Reply #4 on: May 26, 2007, 08:56:19 PM »
Lol.. I tried some things... But gave up...

The thing got very weird.. When the guitar volume was low, the effect worked a little better, But when I increased it, everything got fuzzier o.O The "Gain" control of the Overdrive in the Amp was working (Adding more distortion) even with the OD turned off... And there was a terrible pop when I turned the whole amp off =x

I'll try to build a new board tomorrow, which is good because I have to save a lot of space to everything fit in the enclosure... and I'll try to change the cap in the pot to see if it wasn't damaged or something...

Thank You.

Meanderthal

Re: Problem with my pedal... Extreme distortion.
« Reply #5 on: May 27, 2007, 12:48:28 PM »
 Sounds like there might have been DC offset in the output... which would indicate a bad output cap. Maybe.
I am not responsible for your imagination.

Muthauzem

Re: Problem with my pedal... Extreme distortion.
« Reply #6 on: May 28, 2007, 02:22:21 PM »
you mean the 10uf cap, in this case?