Marshall VS100 Reverb works but ?? doesn't??

[Jon Snell]

Be logical and you will fix it.
Nearly there.

[GasMask52]

Be logical and you will fix it.
Nearly there.

Today I'm gonna take a look at it

[GasMask52]

Be logical and you will fix it.
Nearly there.

Well I've fixed a few microbridges and such, and now the Overdrive starts giving out a very harsh-gainy output (guitar sound) only if I strike the strings hard, OD1 gives out a clean weak signal when Gain & Volume are dead zero, as soon as i slightly turn up the volume on the overdrive the weak signal disappears

[GasMask52]

Could be most anything. We need to track it down and FIND OUT what is wrong.

Unless I'm wrong , IC4b is the pre-amp for both Overdrives and IC7 is involved aswell - I've noticed also that Volume on the VS100 is pretty high , it sounds like if it's at 8 even when it's just at 3, lots and lots of bass , crazy, maybe the previous bridge soldering killed some resistors??