I have a AD-10 from Fame (made by Biyang).

the problem is that the effect stoped working, like if it was on bypass.
I've check for broken solder and couldn't find any.

Can you guys help me debbug it?

Thanks!

Just put together the Axis Face fuzz from fuzzcentral, and I'm having trouble adjusting the Q2 collector voltage to 4.5 VDC. It just sits just below 9 volts, adjusting the trim pot seems to do nothing. I've gone through all my connections and grounds and everything looks like it should. Obviously I've mucked something up, but for the life of me I keep missing it! Here are the voltages I'm reading on the two transistors with the trim pot set to 8.2K: Q1 E 0, B 0.67, C 1.47 / Q2 E 1.0, B 1.47, C...

I'm working up a circuit I put together and boxed it up and it was working great!! Then I took it out of the box to paint the box and when I put it back together I now can't max the gain without it going into severe oscillation??? Is this coincidental or could there be something I missed??

Thanks

Sean

Hi. Nice to see this up and running again!

Got this Roland ad-50 built, but is not working, :?

I have checked that all the parts are correct, twice. I plug the guitar and I get the bypassed signal strong and clear. When I switch on the pedal the light is on.

I used an audio probe I made to test the circuit. Signal seems to flow from input to output, but the circuit emits just a bit of sound. No effect at all, just a bit of signal when the knobs are at max.

One question, when using an...

i just built an OCD pedal and for the life of me can not get rid of the stupid pop when switching on and off! ive tried putting bleeders on the last caps and nothing changed. took the led circuit out and nothing changed. the pop is controllable by the volume knob. so when the pedal is tuned down theres no pop and i found that if i ground it out at the last cap the signal goes away and no pop. but, cant get rid of it at all!! any thought?

Hey all

I'm working on a boost design and it sound great until I turn my guitar volume pot down,even to zero and I 'm getting radio station signal..........is this an impedance issue maybe??

The pedal i am building is a microamp, sho, and ehx hog's foot.

i've got the SHO working without much trouble.
But the microamp and the Hog's foot both suffer the same problem. they have a quiet buzzy distortion, like a really bad square wave fuzz not even up to unity when the pots are on full.

tested the Hog's foot transistor and it seems like i finally got it the right way round because its making SOME noise now, also tested using the voltmeter at c+e and shorting b+c, b+e and all was fine....

A while ago, I bought an original Deluxe Electric Mistress. It sounds great, but I don't think the range knob is working. Any ideas?

why is it when i turned the pots to maximum settings it squels??

what should i do?

Hi,
I tried to make a fuzzface on a perfboard, based on what I could find on those two websites :

I put sockets for most of the parts. I got no sound going through the beast.
I wonder if the layout I made has any mistakes. Does someone sees nonsense in it ? (I'll burn a candle for him / them)

Thanks !!

here it is :

hi all,

I've just built this and can't get it to work. The troubleshooting gave me a headache so i could use some of your wisdom and a set of fresh eyes (or two :D)

The problem is that i have no sound at all when the pedal is engaged. I audio-probed this morning and found out that i got no sound all the way from the input resistor (R2). I'm not a tech guru by any means, but to my understanding this is most possibly caused by either:

1) The power diode (i use an 1N004). When it's either...

Hi everyone,

I built this circuit (the layout by WhiteKeyHole), but something strange is happening. The bypass works fine, but when I click on the pedal, I get a loud pop. After the pop, I can heard the pedal working and the knobs even work when turned, however the sound fades out over about 5 seconds, then there is no sound at all.

I have triple checked my work, and everything seems fine. I even ran a blade down the tracks to make sure there were no accidental connections.

Any idea what...

Here is the schematic for the fuzz face,

I got everything put together today and all the wiring looks great under the hood and I followed the wiring diagram correctly.

After plugging in the pedal and attempting to play it, the bypassed signal was muted. No sound would come through the amplifier when the pedal was bypassed. After turning on the pedal the signal will run through at full volume. The volume potentiometer (500k) of the circuit works fine and will turn all the way up to 10....

Hey Folks,

I build a SHO clone for use as an on-board guitar booster.
I've built SHOs before, so I had a little idea of what was to be expected.

I hooked it all up, and when it's on, and turned down most of the way, it works,
it's loud and it sounds great.
When I try to turn up the boost, it crackles (which is normal), but then it cuts out.
I get SOME signal thru, but it's greatly reduced...almost like the transistor isn't kicking in.
I have very little if any boost range. It pretty much...

HELP troubleshooting modded BD2 Blues Driver?
OK. I was trying one more mod, & now I can't get the pedal to work. There is a little sound if drive & volume are maxed, below that, silence.
I changed C24 to 0.1uF (R34 has already been made 10k)
Changed R9 to 10k (from 6.8k)
I believe R9 is the feedback resistor on the IC op amp. (not R8, as some schems here have it..)
I have checked my joints, & re-done them. I've tried three caps @ C24, & now have original cap back in.

Can R9 not be 10k? Am I...

Hello everyone!

This is my first post on the forum, but definitely won't be my last! I started building my own effects about 6 months ago and have completed a number of projects (although I'm still a noob as I am learning something new every day).

Anyways, I built a Jordan Bosstone, great sound out of this pedal (especially when you get the right NPN transistor and experiment with the diodes). The pedal works great, but I discovered a weird anomaly the other day. When I unplug the effect...

Hey guys I have built an OCD clone with a super hard on together in one pedal for a friend. The pedal works great powered up by either a battery or a 1-spot in the UK where I live. Last week I come back home in Greece and gave it to my friend and noticed a buzzy-constant sound when being powered by his boss adaptor. We also tried it with another no-name adapter without solving the problem. The pedal still works ok with a battery. We also tried out the pedal in three differnet buildings but in...

Hello. While I am somewhat new to posting here I have been a lurker for quite sometime. I must say this site is certainly one of my favourite on the internet and I truly appreciate everything I have learned from this board. On to business.

As by way of background, a friend of mine sent me an email asking me to have a look at his Big Muff pedal and possibly fix it up for him. He brought it over and I was somewhat surprised to see that is was an original Triangle. Apparently my friend found it...

Hello all, I am pretty new to this so please bare with me. I recently built a dod 440 clone and all is well except a loud pop when stepping on the switch. If someone could point me in the right direction it would be greatly appreciated.

Thanks in advance

Frank

I am building a PT80 Delay with a board purchased from GGG. The effect is not changing the sound of the guitar at all. Switched in or out the sound is the same. I have checked all the component values and everything seems to be correct. I tried replacing all of the chips, and there is still no effect - pure guitar signal yes, but no effect. I checked the pin voltages with power on but the unit unloaded and some are not in line with the ref voltages posted on the GGG site. All are correct except...

Hey ya'll.

I just finished up a Catalinbread Dirty Little Secret clone using the following vero layout:

The true bypass works fine but when I engage the pedal the sound goes completely dead. It's like I've built a kill switch.

Anyway, I was probing the circuit and I'm getting normal voltage readings until I get to C5 (50nf cap). I get a voltage reading
on one side but the other side gets no voltage reading whatsoever.

Is this a sign that the 50n cap is the problem? If so any...

The first of all: Hello and thanks in advice, also sorry if i'm doing one or many things wrong

I tried to build a fuzz copy of Zvex Woolly Mammoth. I used a veroboard design called «Fuzzy Elephant»:

An this was the offboard wiring layout i used to connect the jacks and battery:

I used the exact components marked on the layout. It was my first attempt of building a stompbox. I turned it on and nothing explodes. But when played my bass (G&L Tribute L-2500) I realized two things, the Wool...

Recent umble pedal build, have a microphonic (I believe that is the correct term) effect with the cables and the enclosure. Tapping on them is audible through the amp. My limited reading on this indicates a capacitance issue, but I really don't know where to begin or if that is the reason. Fender 25R amp, no other pedals in the loop. I believe cables are good as this pedal is the only one that does this.

Any help would be appreciated.

Thanks.

Rich

Hi there.

I just finished my vero lay-out (Stratotrasto version) of the OCD nad got it to work most of the way. I do have some additional problems, however.

1) When the drive pot is all the way up the sound gets very stuttery and tremolo-esque.
2) There is a bit of an unwanted distorted tail (quite harsh and trebly) as the desired distortion sound fades away. Mostly this is present when drive levels are low or moderate, but is also noticeable when the drive levels are higher.

Any ideas on...

I have just completed an AMZ mosfet booser using the board layout from the Tonepad site. I etched the board and loaded components as per those layouts. I am getting sound out of it, but absolutely no gain, in fact the bypassed sound is louder than with the effect engaged. When I turn the 5k pot the sound does not change at all. I have checked all of the resistor and cap values and they are correct. I am using a BS170 transistor, and am getting the following voltages:

D= 4.26
G= 3.71
S=4.75

At...