ground issue

[mahdi]

Hi

anyone had a problem with  stable hum buzz when pushing the foot switch on , and even  when turning the knob the hum keep stable , plus when touching the enclosure it make some click noise , anyone have any idea of way to ground that?

[R.G.]

It is impossible to say what might be happening out of the millions of possibilities.

You must provide more information before we have any chance to guess the problem.

Post a schematic of what you thought you did.

[mahdi]

its same booster schematic of LPB-1

[GibsonGM]

That sounds like a build problem, Mahdi...the only real solution is to check all of your connections over and over until you find it!   
Like R.G. said, that really isn't enough information.

When I build something on PC board, I attach in/out jacks and a power supply and test it before I put it in an enclosure. Then I know it works, and problems later are probably my installation.   Maybe you can try that?