A BASIC QUESTION
- Thread starter Strat68
- Start date
Harry Klippton
Not Interested
Builder error is wayyyyyyyyy more common than faulty components
Guardians of the analog
Papi Fuego
falco_femoralis
Well-known member
If you can describe exactly what the pedal is doing wrong, and then also describe your troubleshooting process including what you've done already to try and solve it, and then post a couple pics of the front and back of your board, it's easier for others to follow along and help you.
Even without the proper resdef, with the schematic linked above, you can trace the circuit pretty easily and work out where your problem may be, if you use a the continuity function of a multi meter. This is better than just comparing parts values because it can reveal shorts and breaks in the circuit, which are something you wouldn't find just by reading resistor color codes etc
Chat GPT isn't going to be helpful with this kind of thing. It's ok for word based things, but not diagrams etc. And this is a skill you should develop on your own, and with the help of real people on the forum.
Even without the proper resdef, with the schematic linked above, you can trace the circuit pretty easily and work out where your problem may be, if you use a the continuity function of a multi meter. This is better than just comparing parts values because it can reveal shorts and breaks in the circuit, which are something you wouldn't find just by reading resistor color codes etc
Chat GPT isn't going to be helpful with this kind of thing. It's ok for word based things, but not diagrams etc. And this is a skill you should develop on your own, and with the help of real people on the forum.
Feral Feline
Well-known member
Constipation myass...
Consternation blahs...
Complication biatch...
#^@% IT!
It's too hard.
You want the impossible...
Nostradoomus
Well-known member
wait someone trashed Neil?
Leave this place and never come back, whoever that was. A SIMPLE ANSWER.
Leave this place and never come back, whoever that was. A SIMPLE ANSWER.
Feral Feline
Well-known member
Nostradoomus
Well-known member
There’s a documentary everyone should learn from….it’s called “Don’t Fuck With Cats”
Feral or not.
Yes of course, but is was an obvious and easy thing to check. The signal on one end of C12 was fine but on the other it went bad. No change.
ChatGPT then wanted to look at the voltage section and zeroed in on C6, the 470u cap. It suggested changing it out which did not work. Then it suggested tying a .1 film cap to VREF as close to IC1 as possible then to ground. This removed the buzzing. I probably have a bad batch of 470u caps.
falco_femoralis
Well-known member
You should try swapping C6 to a 100u cap. 470 is pretty high for a bypass cap and 100u is much more common. It's also from a different batch of caps. You could run a 100n in parallel with this if you want, but it's not necessary if you power supply is a nice Voodoo labs or similar
Also try C2 to a 100u if you still have buzzing
Thanks.
It's worst with a guitar. A test tone isn't too bad.
I'll give the 100u a try. The buzzing stopped with the .1 cap from pin 3 to ground. I'm not thrilled with the sound so making some changes can't hurt. Just a note, chatgpt kept referring to VREF all along and once I asked the right question it finally sent me to C6 and a solution to try.