My Vizio P50HMD plasma tv dont turn off I have to unplug it, ithas sound ,

SOURCE: only vizio light come on then nothing. have to unplug to turn off

there a problem on power side.. chage the ic and the resistor going to ic and check also the signal diode.

SOURCE: No Picture or Sound on Vizio 52" Plasma TV

Try to use the reset factory reset feature. Unplug the set. After unplugging press the power button for 30 seconds. Plug the set back in and turn it on.

SOURCE: no picture or sound, light comes on in the front and have to unplug tv to turn it off.

I had this exact problem on my Vizio 47" HDTV. I removed the speakers and all the screws on the back cover. Took the cover off and located the fuses on the largest circuit board. The are in the upper right hand corner of the board. There are 3 of them in a row labeled LF 1.5, LF 3.0 and LF 3.0. The are white in color with copper ends. I took a volt meter and measured continuity across all fuses individually and found the LF 1.5 to be blown. The guy at the electronics store sold me a barrel 1.5A fuse and told me to soldier it across the top of the blown fuse. It took an extra set of hands but the TV works perfectly.

SOURCE: Vizio 42 Plasma Pop

My 42 Inch Vizio experienced the pop of death out-of warranty. I bought mine at Sears and they sent a technician over within a day or so. It turned out to be in the power supply and they shipped a board right out. Total including parts and labor was $280. Although no expensive TV should die after less than 2-years, Sears seems to be able to deal with repair in the home without drama.

SOURCE: my vizio 50 inch plasma tv will not turn on. what

Tries unplug,replug about an hour,see if it reset itself.Not than must replaced the signal tuner board.Plasma have this problems alot.