News:

Forum may be experiencing issues.

Main Menu

BYOC OD2 - Tone control not working

Started by Stomptown, March 27, 2013, 06:08:21 AM

Previous topic - Next topic

Stomptown

Okay, so I am finally taking the time to learn how to debug and I figured I would start with my very first build. It's a BYOC TS clone with extra bells/whistles. I used mosfet clipping option, mosfet boost and IC is Mosfet as well. I actually think that it's possible that one or two solder pads is disconnected from the traces. One of the lugs for the tone pot in particular is mangled beyond belief and that may just be the issue. I was using a crappy Walmart soldering iron and I overheated and melted all sorts of stuff. If I can get this working properly it will definitely be my Frankenstein pedal! Thanks in advance for taking the time to help out. If there is any info that would be helpful that I'm leaving out, please let me know. I don't want to pull the pots unless I have to so I can't really show what's going on underneath. Here is what I've got:

IC1 (CA3260E)

P1 = 4.48
P2 = 4.48
P3 = 4.47
P4 = 0.01
P5 = 4.39
P6 = 5.01
P7 = 4.48
P8 = 8.98


Q1

C = 8.97
B = 2.87
E = 3.67

Q2

C =8.97
B = 2.88
E = 3.69

Q3 (mosfet Boost section, seems to work perfectly)

C = 4.48
B = 4.48
E = 4.01

Q? (mosfet clipping section, seems to work)

C = 0.37
B = 2.36
E = 5.24

Q? (mosfet clipping section, seems to work)

C = 4.02
B = 4.04
E = 4.48

And the horror show Pics:  ;D









gtangas

Looking a the board graphics I see some trans flipped. Is that okay?

Stomptown

Yes, they are MOSFET and needed to oriented that way...