ok so when i turn on my rally-x i here this feedback reverb buzz noise threw the speaker. and once the board boots up from its p.o.s.t. it gets louder (doesn't keep getting louder just stays the same.). and it will change in volume when i change the volume... i unplugged the monitor to see if that was causing it, no change.. it has been changed over to a switching power supply (black rectangle one with screws on the end)... i have no other way to test the board in another machine to see if it board related or have another board to put into this cab... any suggestions what to check out.? ive pulled the board set out and made fur the chips where seated mad sure all the cables and plug-ins where good. tried a different speaker. put a new grounded power cord on it as well.
