When I turn the TV off for say 30 seconds then turn back on the picture returns for a short period then the picture disappears but I can still hear the audio and can still change channels
If the TV is older than 3-5 years or do, it is probably an LCD model with a fluorescent backlight. These backlights have issues with the inverter boards and/or the tubes failing over time. This is why newer flat-panels have gone to LED backlighting. Without the backlight, the picture is actually on the screen, but you aren't able to view it because there is no light to illuminate it. These CAN be repaired, but the cost of new TVs makes it almost most cost-effective to upgrade to an LED TV.
SOURCE: TV turn on and off
Your TV has a power problem, it maybe high or low supply voltage that causes the TV to turn it self off because of an error. A technician from the manufacturer knows what error it has just by looking at the flashing standby light. Best is to take it to an authorize service center for repair... ^_^
SOURCE: frozen picture on LG LCD 37"
Try One of your working TVS and connect it to your cable outlet of the TV that is having problems. If that TV Does not work then there may be a degraded fitting or the Leg coming of the splitter to that outlet could have a Low Signal Problem
Next Take the First TV that was not working properly and put it on the cable outlet of one of the TVs that is working properly and if the TV set works on that Channel then you know it is not your TV that it must be the cable
SOURCE: Sharp LCD TV, Screen goes black sound stays on
Capacitors on the power pack are going bad they need to be replaced that should fix the problem.
SOURCE: I have a LG plasma T.V., model 42PB4D. Black box/middle of screen
Try this:
In the menu go to CC and set the TV to CC1 as this is a text box appearing for captions. Hope this works!
SOURCE: I lose my picture it
You need a lamp. This is a common symptom. I hope this helps. I have a tutorial on the function and failure of lamps, check it out if you like. It explains why your TV is doing this. I hope this was helpful.
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