NEWB!! Any help with Fuzz Face Fix, gut shots included...

Started by TheBeatbarian, December 16, 2022, 12:39:25 PM

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TheBeatbarian

Hello. First post here. Hope I'm not doing anything wrong.
I have a Fuzz Face that I love but the box it came in wasn't great so after a while it stopped working. I just transferred it to a new enclosure but there are three wires that seem to be disconnected. The pedal sends guitar signal through when turned off but once I engage the pedal it's silence. Any assistance regarding what I should connect to where would be amazing but I appreciate this is a long shot and maybe not possible.
Anyway, here are the pics with arrows pointing at the disconnected wires, etc. Thanks in advance...
https://www.aronnelson.com/DIYFiles/up/FF_fix1s.pdf
https://www.aronnelson.com/DIYFiles/up/FF_fix2.pdf
https://www.aronnelson.com/DIYFiles/up/FF_fix3.pdf
https://www.aronnelson.com/DIYFiles/up/FF_fix4.pdf

Dormammu

Best method is to google it the FF circuit, track the wires, and solder them.
1 picture - minus (-) power supply circuit.

GibsonGM

Welcome, it's easier to help you with easy to view pictures. If you can post them instead of PDFs, you'll get a lot of good advice.  Doesn't seem like a difficult repair.

(My 'office' software to open PDFs sucks and is slow to start, so I avoid them if I can for this purpose. Plus, they need to be downloaded, not always cool...)
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stallik

Welcome

You can try embedding your images within your post by using the image icon then place your image link between the 2 sets of square brackets. Also, changing the contents of the first bracket to img width=300 will keep the size sensible

As your images are in pdf format, they may not appear in every browser but this works on my iPad

Insanity: doing the same thing over and over again and expecting different results. Albert Einstein

eh la bas ma

#4
Hello,

Fix 1 is the battery, red wire going to 9v power DC jack mid terminal, like the battery clip connection in this wiring example :




I think most Fuzz Face circuits are powered with positive ground, right ? Or is it only germanium versions ? Maybe not like the usual stompboxes, so there might be a twist here, and you don't want to burn your circuit... Powering it with a battery should keep you safe anyway.



Fix2 is most probably the led resistor (lights up when you engage the effect), going to the positive side of the led. Without it, the led would burn. Higher values (10k, 15k...) will reduce the intensity and any popping noise from the led.



Fix 3 : I guess it's the extra ground wire coming from the pcb. Usually goes on the other jack's ground terminal if it's not grounded yet. Other possibility is it's the guitar signal's wire, not sure where it could go in this case. But it's most probably ground ?

Fix 4 : Hard to guess.
Both your jacks IN and OUT should have at least 2 wires each, on 2 different terminals : 2 ground wires and the signal in and out. Surely a third ground wire, for the battery clip on the In jack, as shown in  example. This blue wire could be pcb's signal in or out, going to a jack. Could also go to a potentiometer's terminal...see if one pot's lug is free and have already some solder on it, indicating its missing a wire.

I hope I have at least one good guess ?

Edit : I tried to find the layout here :

https://tagboardeffects.blogspot.com/search?q=fuzz+face
https://dirtboxlayouts.blogspot.com/search?q=fuzz+face

But no luck so far...
"One Cannot derogate, by particular conventions, from the Laws which relate to public Order and good Morals." Article 6 of the Civil Code.
"We must not confuse what we are and what society has made of us." Theodor W. Adorno.

Dormammu

Quote from: eh la bas ma on December 16, 2022, 06:38:57 PM
Hello,

Fix 1 is the battery, red wire going to 9v power DC jack mid terminal, like the battery clip connection in this wiring example :

Not quite true. To be sure you need to know exactly what is used as ground + or - .  There are exist FF circuits on transistors of any polarity with both variants on the ground.
If there is a standard FF circuit, then 1 fix is not ground but power supply. And it should be powered separately from other boxes with (-) on the ground.

TheBeatbarian

Thank you so much for the awesome replies!! I'll get to attempt them this afternoon. Apologies for the PDFs but when I tried to upload png files it wouldn't let me and recommended PDF's as one of the accepted formats. I'll try to embed them here now.
Thanks again.










TheBeatbarian

Also, this is a battery only FF. There's no power input so if that helps figure out some of these wires...

Dormammu

Quote from: TheBeatbarian on December 17, 2022, 01:02:57 PM
Also, this is a battery only FF. There's no power input so if that helps figure out some of these wires...
It is necessary to show where are connected (other end) broken wires.
It is completely unclear where the black wire goes on fix 3 pic, and the other end of the resistor on fix 2 pic.

TheBeatbarian

Success!!! Thanks so much. This was my first attempt at repair and I bought a soldering iron especially so I'm delighted that I managed to fix it first attempt! All thanks to the help here, especially eh la bas ma.

Now I have one more question: How easy would it be to install a power inlet to replace the battery option?

idy

Congratulations. About adding DC jack: You need to determine if the circuit is positive or negative ground, ie is the signal ground (the sleeves of the two jacks) attached to + or - of the battery?
If it is -, it is easy to add.
If it is + you really can't without adding as little voltage investor board or something. That something could be using a dedicated power supply... it won't "daisy chain with other pedals" because short circuit.