noise issue with engl fireball 60

[ctravis595]

client reports lots of noise on first start up, with volume off you can hear some crackling and popping but while playing, this amp kills!


upon inspection i see this amp has had some mods done 


im getting ready to study the schematics to see exactly what is going on with these mods but does this raise an immediate red flag to anyone?

[HotBluePlates]

I think your first candidate issue is shown in that picture.

[ctravis595]

did a bunch of cleaning on the board and also tidy'd up a few weak solder points i noticed. these boards are a pain to work with but if anyone else is having similar issues just give the board a good visual inspection/cleaning