My friend has a Memphis amp, and for some reason it keeps going into unbalanced DC protect mode. What the hell does that mean, and how would I fix it.

Here are just a few things we have checked:
Ground is solid.
Replaced the head unit
Replaced the woofers
Added a 1.2f Cap
and checked all the fuses.

I don't know why the hell the amp is doing this, maybe someone out there can help us out.

Thanks

bzoss

Built block.
Refinished head.
Tuned suspension.
TURBO.