Mine turns on for 3 seconds, then says "protect" and shuts off. I've had mine for over a year and haven't used it much. When I took off the top, it appears everything is in order as no parts are fried. Some people think that the speaker wires trip the protection, but I've unplugged them all and still have the same problem. To get this to work again, I unplug it for the night and then leave it on the next time I use it. Shutting it down will give me the "protect" error and shut it off again. I have older equipment that I've had for decades and still have no problems with. I've concluded that the HT-Z310 is a piece of junk!...So many complaints as well--- well you get what you pay for!
PissedatSamsung!, September 2010