Park and ride Volume problem

[nicubarbieru]

Great kit,convinced tones
But the Volume potentiometer seems that is not working.
I checked everything,all looks good.
By turning left right the volume potentiometer nothing is happening.
The volume remains the same.
And it is lower than I need
Some thoughts and help ? Tks.

 

[szukalski]

 

[nicubarbieru]

View attachment 84186

 

[nicubarbieru]

Everything looks to be in place.
But the Volume potentiometer has no effect

 

[Erik S]

These 4k7 and 47k look to be swapped.

 

[Erik S]

 

[andrewsrea]

Also check for a defective pot, by checking the continuity between all three lugs with an ohm meter DMM setting. It is rare, but I've encountered new defective pots.

 

[nicubarbieru]

Pot is okay.
R10 must be 47K. Now it is one 4k7...

 

[nicubarbieru]

View attachment 84189

THANK YOU !

 

[nicubarbieru]

These 4k7 and 47k look to be swapped.

View attachment 84188

THANK YOU!

 

[nicubarbieru]

These 4k7 and 47k look to be swapped.

View attachment 84188

Replace de resistor with a 47k one
No changes in Volume pot
It still has no effect
The volume is stil to a lower signal value and make the pedal useless

 

[nicubarbieru]

THANK YOU !

Replaced de resistor with a 47k one
No changes in Volume pot
It still has no effect
The volume is stil to a lower signal value and make the pedal useless

 

[Erik S]

Did you replace both resistors?

I believe both the circled ones were wrong.

 

[nicubarbieru]

Did you replace both resistors?

I believe both the circled ones were wrong.

Hi
I put a correct 47k in place of R10
But did not change the R100 (4k7)
I assumed that R100 is correct 4k7…
Now I can not to measure it as it it in circuit

 

[nicubarbieru]

Just measured the R100
It shows 47k….
I will replace now with one of 4k7
I hope that will solve the problem

 

[jimilee]

Just measured the R100
It shows 47k….
I will replace now with one of 4k7
I hope that will solve the problem

R100 is the CLR for the LED. I would build an audio probe. I’m not seeing voltages listed yet, too.

 

[nicubarbieru]

R100 is the CLR for the LED. I would build an audio probe. I’m not seeing voltages listed yet, too.

You mean R100 has nothing to do with the signal volume of the Volume pot
But there was a wrong 47k instead the correct one of 4k7 as the pcb says.
With 47k the LED should not light at all
But it lights correctly.

 

[Erik S]

You mean R100 has nothing to do with the signal volume of the Volume pot
But there was a wrong 47k instead the correct one of 4k7 as the pcb says.
With 47k the LED should not light at all
But it lights correctly.

That does sound suspicious.

I believe @jimilee is right about R100 being the CLR, and that it shouldn't be causing your problem, but if there's some doubt about what's going on, starting with the right parts in the right places can't hurt.

 

[nicubarbieru]

That does sound suspicious.

I believe @jimilee is right about R100 being the CLR, and that it shouldn't be causing your problem, but if there's some doubt about what's going on, starting with the right parts in the right places can't hurt.

Exactly..I will put a right 4k7 in place of R100

 

[jimilee]

I looked at the schematic to make sure. Examine the underside for any solder bridges.