HT-Z320 displays PROT code and then shuts down

I had the same problem a prot display then it would shut down. turns out i had the sub disconnected(noise complaint from the shaking at my apartment complex) but the speaker wires for the sub connected to the amp or central unit. when i disconnected the sub i left the wires on the floor behind the sub separating the pos. and neg. somehow the wires got moved around and the pos was touching the neg. as soon as i noticed and fixed this problem the system was working fine. my samsung hometheater model is HT-BD1250

I believe the PROT actually stands for protection mode you must have accidently pressed or held a certain button i had this problem too with a Samsung not the model though try holding the button , hope this helps or at least figured out the PROT part for you

If doesn't have success recover error message "Protected" replace main Board Samsung HT Z320 Z420 Z220 Parts AH41 01194C AH92 991A DVD Rom