SOLVED Have a Distortion 250 that wont produce sound when pedal is engaged.

[delackattack]

I have been having issues with this and a few others with the same issue. I guess for starters I would need to know how to properly probe my circuits with a multimeter but am unable to find sufficient info on the process. PLZ HALP

 

[carlinb17]

can you post some clear complete pictures.

 

[BuddytheReow]

can you post some clear complete pictures.

Agreed. We can’t help if we can’t see what you’re seeing

 

[delackattack]

 

[spi]

Your picture doesn't show the power connector. Are you getting 9+V in (and is the LED lighting up when engaged)?

 

[delackattack]

Your picture doesn't show the power connector. Are you getting 9+V in (and is the LED lighting up when engag

Your picture doesn't show the power connector. Are you getting 9+V in (and is the LED lighting up when engaged)?

Yessir, the LED will light up when engaged.

 

[Coda]

I would double check that your 9v jack is center negative.

 

[matt3310]

got a pic of the jacks?

 

[delackattack]

 

[delackattack]

I would double check that your 9v jack is center negative.

I believe it is!
This pack of jacks have been working fine so far.
I also believe my connections are correct on the 9v

 

[delackattack]

I believe it is!
This pack of jacks have been working fine so far.
I also believe my connections are correct on the 9v

By jacks I mean the 9v female end lol

 

[spi]

Everything looks in order. You have a meter to check voltages on the chip?

You may need to get (or build) an audio probe to check the signal too.

Once I was debugging a pedal, and realized I was plugging the input into the output and vice-versa (because it was upside-down when looking at it).

 

[carlinb17]

Once I was debugging a pedal, and realized I was plugging the input into the output and vice-versa (because it was upside-down when looking at it).

I cannot tell you how many times I’ve done this

 

[delackattack]

Everything looks in order. You have a meter to check voltages on the chip?

You may need to get (or build) an audio probe to check the signal too.

Once I was debugging a pedal, and realized I was plugging the input into the output and vice-versa (because it was upside-down when looking at it).

I guess I need to look into getting or making a probe

 

[Stickman393]

It's easy, just put a 1UF cap on the end of a stripped back guitar cord. Jump the shield to your ground connection, plug it into an amp and start working your way through the circuit.

I've marked out the first three spots to probe, just find these spots on the circuit board and touch the cap to each one while feeding an audio signal through the pedal.

 

[Mcknib]

Looks like a few of your resistance values are wrong unless I'm looking at the wrong build doc, youve got lots of 4K7 and looks like a 1M in R1 instead of 10K, R4 should also be 10K

Could just be the light visually check all values and orientation

Check resistor colour bands

Here

 

[delackattack]

After many back and forth with various folks and threads, do yourself a favor and swap the gain pot for a C100k.
Did WONDERS