Tv turned off while wathcing, can turn back on but no picture.
I was watching Tv and it turned off by itself. The only way to turn back on was to un plug it and plug back it. The power came on but no picture, black screen only. Channels dont change and only able to turn off TV now by unplugging.
Re: Tv turned off while wathcing, can turn back on but no...
This sounds to be a faulty flyback transformer, as it heats it gets a shorted winding and the protection circuit shuts the set down to avoid big sparks. this is not a user solvable problem unfortunately and i would recommend taking it to an electronics repair shop and getting a quote for repair.
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It could be the temp sensor going bad. This sensor sits on top of the
metal housing which the bulb assembly slides into. The bulb assembly
will have a hole on top and this is where the sensor is above. There is a
small blue and white wire that plugs into it. If you pull the wire out
and put a paper clip or wire in the coupling you will basically bypass
the sensor connecting the blue and white wire. If your tv turns on then
that is your problem. Its cheap too. Here were my symptoms..1] Turn tv
on 2] Bulb would light up..(which eliminates the ballast) regular
picture would show up (which eliminates the bulb and color wheel) 3] 30
seconds later tv would shut down with 3 flashing lights. After bypass
the tv turned on as always and hasnt shut down yet. Always un plug tv
first. Get the replacement part to avoid overheating and possible fire
I had the same problem. I also use rabbit ear antenna , no cable or satellite. I was watching ch. 33.1 and the tv turned off by itself. The remote wouldn't work. The power on/off buttons on the side of the tv wouldn't work. I had to un-plug the power cord to turn the tv off. The tv forze on ch. 33.1 when I turned it back on.
I called Vizio, they told me they received hundreds of complaints from people in Texas complain g about these problems.
I was told to un-plug the antenna cable and re-plug it. I did this plus I re-scanned all channels. The problem has been solved, the channel (33.1) no longer freezes and the tv doesn't turn off by itself.
I'm not sure what TV model you have. But, thing I can tell you is the most common problem.
Most of the time with flat panel TVs, the power supply for the screen fails. And the TV normally turns itself off to protect other parts in the TV from being damaged. Basically " Protection Mode".
You can try leaving the TV unplugged for 30 minutes so the TV can reset itself; then try again turning it on. If it doesn't work after that, it's time for the TV repair shop.
I think it is the EHT for some reason it blew off for you. You got a miniature picture after you turned it on again because it was partially damaged and then it blew off completely. It can be fixed from a competent person.
If the tv has nothing happening at all when you try and turn it back on including any noise, your power supply is broken. If it is still trying to turn on or does make noise, an internal component has come loose or been knocked off, most likely to your picture tube.
The six controls you appear to be adjusting are the screen and focus controls for each of the three picture tubes. These usually only have to be adjusted as each picture tube ages or when replaced. You may either have a defective "focus block" i.e. the black box you have been adjusting, or the CRT's themselves may be going bad at this age. You will probably be money ahead to just replace the TV with a new HDTV set. At 13 years old, it shouldn't have much life left in it anyhow.