I recently replaced the switches on my 13 year old Line 6 DL4 delay with some soft touch momentary switches from mammoth. I tested it before I put everything back in the chassis and it worked perfectly. But now, with everything put back together, it is recreating the original problem I had, where only the B switch works, and the others turn on the preset in the B slot.
My first thought, and it may be the case, was that the switches are shorting against the circuit board. I wrapped each one in electrical tape,but the problem is still there.
Has anyone else experienced this? I'm sure I installed the new switches correctly, because everything works when the guts are plugged in outside the chassis.
Are there any common areas for shorts to occur?
Thank you.