madbeanpedals::forum

Projects => Tech Help - Projects Page => Topic started by: Jipo on February 07, 2016, 07:04:58 PM

Title: OG Pork Barrel sound no effect.
Post by: Jipo on February 07, 2016, 07:04:58 PM
I got an original pork barrel I built a while ago and never got around to trouble shooting.

The issue is it has no effect, there's a minor change in the tone when its on but the pots do nothing and there is no modulation.  My IC voltages are all over the place. the spreads are oscillating between those ranges.  I can check voltages at transistors but I'm assuming this is plenty to start. 

Also the BBD is getting very hot almost immediately after applying power

TL062
1 1.5-7v
2 4.5v
3 3.0-6.0v
4 0v
5 4.5v
6 4.5v
7 3.0-6.0v
8 9v

4558
1. 4.4v
2. 4.4v
3 4.4v
4 0v
5 4.4v
6 4.4v
7 4.4v
8 9v

3007
1 6.9v
2 3.7v
3 2.7v
4 1.5v
5 0v
6 3.1v
7 1.3v
8 1.3v

3101
1 6.9v
2 3.0v
3 0v
4 3.8v
5 .4v
6 5.5-6v
7 2.2-2.7v
8 1.5v
Title: Re: OG Pork Barrel sound no effect.
Post by: darrenw6000 on February 18, 2016, 10:29:48 PM
maybe the MN3007 is a fake, fake ones will just give u a signal but no effect, some dont give you anything at all!
so can i ask where you got the BBD from?
Title: Re: OG Pork Barrel sound no effect.
Post by: GermanCdn on February 18, 2016, 10:58:10 PM
Without looking at your voltages, if your IC is getting hot, make sure you've installed it in the correct orientation.

Hot IC usually equals IC in backwards.