Kicker ZX700.5

[caraudioguy2100]

All 4 channels have clean audio on them .

Sub channel has no output at all I cleaned the switches made no difference .

Any ideas ?

 

[Perry Babin]

Do you have rail-rail oscillation on the output transistors?

 

[caraudioguy2100]

Nevermind I found the problem it has a blown power supply