Forum Vibe Build Help

[davidhaus]

Hello Guys,

i just finished assembling my forum vibe kit.
I have the Version VB-5 REV2.

Unfortunately when i plug it in and use it there is a lot of noise and also volume lost even though Volume is on 100%.
I first thought the Problems source might be my power supply (18VDC) so i tried using two 9V batteries in series. This didn't change anything though, so the power supply can't be the problem.

Can you guys give me advise on what my next steps for debug could be?
If u need any more information just ask me for it

board http://www.classicamplification.net/fv/files/fv5_vint2n_02.htm

board http://www.classicamplification.net/fv/files/fv5_vint2n_03.htm

parts list - http://www.classicamplification.net/fv/files/fv_vint_05.htm

original schematic - http://www.classicamplification.net/fv/files/fv_sch_vint.htm 

[PRR]

Welcome!

> what my next steps for debug could be?

Electricity is invisible. We need to know what is going on in there. Start here:
https://www.diystompboxes.com/smfforum/index.php?topic=29816.0