Hello everybody!
I'm real new to building pedals and have just put my first pedal together. It's the P.U.F.F. pedal kit from Musikding. The problem is though that after soldering everything i plug the pedal in and the led light up. It even changes color depending on foorswitch position. But i have no signal at all in bypass mode and only some white noise when engaged. the volume of the white noise can be controlled with the volume pot, so that's a good sign i guess?
other than that i am clueless. I need help troubleshooting and am humbley requesting your guidance! As far as i have checked the components are placed in correctly and at some point, before soldering in the 3PDT board i had a bypass signal. But now i get nothing. Yesterday i even got the voltages on the components and they were quite close to what's online. But today i can't measure any voltage at all. it all reads zero. Did i mess up my PCB?
Welcome, and pictures would help us a lot.
And if you can post a link to the project - a schematic - that would be great! Are you powering it using a battery, or plug-in wall wart?
From the sound of it, some component might be fried or have a bad connection...the pics and a schematic will be very useful for us to help. No worries, and welcome to the forum!
Quote from: GibsonGM on April 01, 2025, 04:08:33 PMAnd if you can post a link to the project - a schematic - that would be great!
https://guitarpcb.com/wp-content/uploads/2022/01/PUFF_v5-2021.pdf (https://guitarpcb.com/wp-content/uploads/2022/01/PUFF_v5-2021.pdf)
A reverse biased B-E junction can make an excellent white noise generator.. :icon_wink:
P.S.
Welcome also..
Quote from: GibsonGM on April 01, 2025, 04:08:33 PMAnd if you can post a link to the project - a schematic - that would be great! Are you powering it using a battery, or plug-in wall wart?
From the sound of it, some component might be fried or have a bad connection...the pics and a schematic will be very useful for us to help. No worries, and welcome to the forum!
Thank you for your warm welcomings everybody!
I know i soldered the LED on the wrong side lol but im okay with it for now. I just want this thing to make some coherent noise!
(https://i.postimg.cc/jwHHHLfb/Whats-App-Bild-2025-04-02-um-18-35-51-656f0d51.jpg) (https://postimg.cc/jwHHHLfb)
(https://i.postimg.cc/cK8MJD46/Whats-App-Bild-2025-04-02-um-18-35-51-8ceb7d93.jpg) (https://postimg.cc/cK8MJD46)
(https://i.postimg.cc/mh4Nbyx2/Whats-App-Bild-2025-04-02-um-18-35-51-91fdc767.jpg) (https://postimg.cc/mh4Nbyx2)
(https://i.postimg.cc/FkhjDNbJ/Whats-App-Bild-2025-04-02-um-18-35-52-d9641767.jpg) (https://postimg.cc/FkhjDNbJ)
I'd check Red framed for good pad contact and Yellow framed for short..
(https://i.imgur.com/lGj4zBQ.jpg)
P.S.
Most of your joints have too much solder.. Solder bulbs may result into cold joints.. :icon_wink:
Not bad soldering. Maybe a little too much solder. Might use a smaller solder such as .025. I'm used to .031 and .062 for tube stuff. I "usually" try to bend the thru lead in the same direction as the trace goes, if possible.
I'm sure you will get it working.
Quote from: mozz on April 03, 2025, 05:28:48 AMI "usually" try to bend the thru lead in the same direction as the trace goes, if possible.
Always "must" for vero/strip boards but also good for PCBs.. :icon_wink:
(https://i.postimg.cc/cK8MJD46/Whats-App-Bild-2025-04-02-um-18-35-51-8ceb7d93.jpg)
if I gaze at this photo long enough, I can convice myself that you have wired the "ring" dinger instead of the "tip" dinger. can you confirm the wire connects the longest finger please?
and to think people don't post their build photos.
Quote from: MandyCheeks on April 01, 2025, 02:28:11 PMbefore soldering in the 3PDT board i had a bypass signal. But now i get nothing.
This confuses me...how did you get bypass before soldering the 3PDT to everything? That switch is what gets the sounds from/to jacks and PCB, so you may want to check continuity between the jack tips through the bypassed switch, and from those to the board with the effect set on. That board looks like it could use a reflow (apply flux first!) but doing the check first will at least let you know if it was an issue before going in to fix...
Odd your voltages show zero when they were there before, I'd do a dummy check (was it plugged in?) first then check those for continuity too