AMP FAIL ! :(
So my setup is working fine , i move it upstairs to a different room , rebuild , and its humming BAD. Tried different wall sockets , switched off all other appliances , not interference based. Tried a few guitars , not guitar fault.
Setup is charvel > isp decimator > ada mp1 3tm > g major > mesa 290 > mesa recto 2x12.
The decimator has always been set at midnight , providing perfect noise supression for higain patches. now with this extra humming i gotta turn it way up , no sustain.
The symptoms are weird too , its like my rig isnt earthed or is live or something ; when i touch the strings the hum quietens a little , if i touch the rack case surround or rack screws it also affects the hum - ive no idea what it could be , been working at it for 4 hours , HELP !