I have a Roland Cube 15 guitar amp that hisses. It does it regardless of what is plugged in (or not plugged in, as it will do it when the guitar and its cord are unplugged from the amp) or what the dials are set to. When I first turn it on, it gives a buzz for a few seconds then switches to the hiss. I opened it up, nothing looked wrong (check the tops of all the caps) and re-flowed the solder on the big filter caps to no avail.
I did find the schematics online here if that helps:
http://schems.com/bmampscom/roland/Roland_Cube_15-30_sch.pdf
I would appreciate any insight! thanks
I did find the schematics online here if that helps:
http://schems.com/bmampscom/roland/Roland_Cube_15-30_sch.pdf
I would appreciate any insight! thanks