Hello everybody.

Please excuse my english. It is not my motherlanguage. :-)

I already build a few pedals from pcbguitarmania and other sites. The only time i had to adjust something was when i build a phaser. In that case it was done by ear.

I`m not sure what to do with the three trimpots on the calvin vai.
How should that sound? Are there some voltages i should measure somewhere? Nothing about the pots in the building docs for that pedal.

Would someone be so kind and can advise on this?...

This is my first time posting here... I've been trying, for the better part of a year, to obtain this pedal. It beautifully replicates the sound of the Beatles - and much better than premium and expensive alternatives like Aclam's Dr. Robert or Jext Telez's White Pedal (no dis). Hear for yourself! Unfortunately the maker has gone completely AWOL... I was able to get a few replies from him last year but he disappeared. I think he's had enough with making pedals. His website and official social...

Rocktek Super Delay ADR-01

Gut shots of Rocktek's Super Delay.
All the parts are identified but I have no time to draw the schematics at the moment.

Some traces are burned (due to inadequate power supply I guess). Someone fixed that with some jumpers (two orange wires). You may also notice that the black wire for the battery snap is on the hole marked with (+) on the PCB, and the red is on (-). But that's OK, the wires are reversed at the battery snap too, so everything is wired properly....

My trusty 80s Rocktek BBD Delay died. I have soldering skills luckily, and a little experience troubleshooting electronics, but only the easy stuff like blown caps/diodes/burns/shorts. I have a great multimeter that does everything, oscilloscope, soldering iron, and adjustable power supply that will display watts being used.

I tried multiple 9V center negative power supplies that work with others, then I tried a battery, no luck. When I plug it all up and I kick it on/off (I can't tell when it...

Greetings all. I hv a FX90 Delay that is misbehaving. I only get dry signal. LED switching off and on.
I hv a scope, sig generator and audio trace at my disposal. I'm trying to understand how the pedal switches off and on. From the 4007ic it goes to a diode then to the mosfet which actualy switches the pedal off and on. I can hear a signal from the 4007 into the diode but nothing out. I replaced the diode but still nothing. I should hear my generated tone on front and back of diode right?

Hey all,
first of all I may be posting in the wrong section, so mods, feel free to move the thread wherever it should be.

So I've read here and there about DemonFX and how they might be copying the cosmetics of famous pedals but not necessarily their schematics. That seems a bit silly and I don't see what they would gain from only doing half of the job.
Also I have read on Reddit someone said that Josh @JHS had (reportedly) had a look at the AT-DS and said it was not the same as their AT+ and...

Hello. I'm looking for xicon's 42tm117-r. Please tell me where they are sold. If you have an extra one, I'd like you to give it to me. 　
If you know a compatible product for this transformer, please let me know. I want to create malekko wolftone chaos.

I’m planning a guitar build and trying to figure out the electronics wiring. I don’t fully understand switches, whether to us a DPDT or a 3PDT on/on/on.

Here is what I’m wanting to do:

HSH pickup configuration. 3-way blade pickup selector, wired Neck, Neck/Bridge, Bridge.

Then a separate mini-toggle: up - middle pickup only (shuts neck & bridge off). Middle - uses only the 3 way blade, for just neck/bridge options. Down - middle brought in with the neck/bridge.

I have an idea how this...

Hi,
I'm repairing at the moment a DOD 670 flanger that has what seems to be a shot SAD512D delay chip.

My pedal has a 110V power input, as I live in Europe and while I'm waiting to solve the current SAD512D situation I'm thinking in replacing the original small 110V primary power transformer for a 230V transformer so I don't need a mains voltage converter.

Just to let you know, theres versions of this pedal where the power transformer has 110V and 220V volts taps on the primary (the available...

Does anyone have a schematic for this, or know how it differs from the Distortron i.e. just bigger caps for ins/out and feedback loop?

ge diodes for sure. put 'em in d3 -8. boom. def what i did on the original.
for the quad opamps, i went with tlc274cn

out of all the quads i had, these seemed to quack and sound the best.

intersil ca3080e's a must

there's new video uploading as i type this. it sounds pretty good. i haven't quite got it dialed in right yet but its pretty close. it even quacks without the fuzz in front of it.

so for mods, i went with a 500k trimmer for r5, which sets the gain of the first stage. turn til...

does anyone here have a Bearfoot Silver Bee and could take some gut shots of it so we can see and possibly trace what the circuit is?

Hello everyone!
Your requests have been heard! I've added three brand new PCBs to my products list 🙂

SLO-style PCB (400mm x 78mm)
Princeton Reverb PCB (322mm x 63.5mm)
Dumblelator PCB (240mm x 35.5mm)

All boards come with full documentation: layout, schematic, BOM! If you want to check out the documentation without any purchase, I've made it available for FREE on my website for anyone to download (just login and you can view/download everything):
If you have any question, please let me...