Rangemaster circuit popping

[Vibroclone]

Hi, first post here, need your help!

I have a rangemaster clone, called Mr Sparkle, built by Richard Molnar.

It has a problem when activating the pedal it makes a loud pop,
the loudness dependant the level of the pedal (nothing when turned down, really loud when turned up).

I have cleaned all jacks, checked all solder joints, tried adding pull down resistors but to no avail, I havent checked for leaking caps, don't have the correct meter.

However, I'm not sure that it isnt a dc related problem as the dc supply goes straight to the 3pdt without any filtering, btw I'm running it off of a battery.

These pics show the circuit, hopefully you can make some sense of them.







Hope you can help.

Cheers,

Brad

[foxfire]

However, I'm not sure that it isnt a dc related problem as the dc supply goes straight to the 3pdt without any filtering, btw I'm running it off of a battery.

the DC goes to the 3pdt? well if the foot switch is turning the power on/off then that should be your problem.

[Vibroclone]

Thought as much, so what's the easy fix in your opinion?

However, I'm not sure that it isnt a dc related problem as the dc supply goes straight to the 3pdt without any filtering, btw I'm running it off of a battery.

the DC goes to the 3pdt? well if the foot switch is turning the power on/off then that should be your problem.