When I turn on the TV, I get audio and video for about 30 seconds (all stations) and then the screen goes blank - but the audio keeps going. If I turn it off, and on, the video comes back - but only for a few seconds.
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Re: Screen goes blank, audio still works
I had this problem on my 42" Philips. Just got it yesterday and worked fine on the tv stand. As soon as I mounted the TV to the wall via wall mount system, I had the exact same issue you did. Figured it out today.
The wall mount was putting pressure against the center of the back of the tv (tv set had a slightly rounded back plate, and the mount was a flat plate). As soon as I put spacers (part of the wall mount hardware set) between the wall mount braket and the tv so there was no contact except at the mounting holes, the tv worked fine.
My theory is the pressure pushed the tv back plate against some board components which caused them to overheat (no air flow); or put pressure on internal connectors. I dont know.
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It could be that the PS3 is outputting a higher resolution than your TV can handle. Here is an excerpt from the PS3 manual: If the video output settings do not match those required for the TV in
use, the screen may go blank when the resolution is changed. The screen
should, however, automatically go back to its original resolution after a
while. If the screen remains blank for more than 30 seconds, turn off
the system. Then touch the power button on the system front for at least
five seconds to turn the system on again. The video output settings
will automatically be reset to the standard resolution.
The power supply board is dead.Those high voltage transformers on the power supply board,one those power coil have a short in it,that why it cause this shutdown a have a loud electrical current noises.Tries websites like Shopjimmy.com.Ebay.com to buy a new refurbish power supply board for the replacement,should solved this loud electrical noises shutdown to tv.
Technology changes at a high rate of speed, as we all know. And High Definition (HD) has come a long way in a very short period. Since your television still works perfectly otherwise, I don't think that it's a problem with the set itself. It may only be a victim of technology.
Does this only happen with High Def channels? Does it happen every time you change to another HD channel? If you answer 'yes' to either of these, it is most likely due to the television's processing capabilities. Because of the high amount of data that is required to deliver HD content, manufacturers have found creative (but not necessarily convenient) ways of dealing with the processing issues (blank screen delay for example). Since the audio and video signals for any given television station (either HD or regular) are transmitted separately, the television has to process that data internally so that you get the picture and sound aligned properly when you are watching it. HD broadcasts are much more demanding than regular stations requiring manufacturers to constantly improve this processing speed with every new model. On some televisions, the channel remains blank for a few seconds to allow the television to configure all of the information so it looks good when it's ready, which could explain the delay you are describing. At the time your television was manufactured, this may have been the best technology your manufacturer had to offer. On my personal flat panel, I get the picture and sound right away, but I have to wait about 15 seconds for the sound to catch up to the picture which I think is more annoying than being forced to look at a blank screen. But that's just me.