On a side note, I called DefTech with my serial number and they gave me a couple of tests to run to confirm the amp board was dead (which I told them from start it was..... LOL). Anyway, its out of warranty as it was purchased in 2015, but the replacement amp board is available for $128 plus shipping/tax. Not sure if I want to fool with getting it repaired or not. Probably can't get that much out of it if I sold it after repair and I'm just not sure I want to use it anywhere else either.