I had the same faults, but unfortunately jason's fix didnt help me.
I obviously fried it good.

I had a power mosfet go short on me.
I replaced 1st & 3rd fets from top left hand side with the nearest equivalent i had at work

IRFZ44

T0220 package
Pin out from left to right gate, drain, source.
Low RDSon, something like 0.025ohms.
Anything similar will do.

Be careful not to damage thermal interface strip when replacing the fets, you will end up shorting the drain pins