While watching television, it looked like some one had taken a light pen or eraser and scribled across the screen the the picture was gone. I unplugged it for an hour thinking that it may be over heated. When plugged back in the power indicator flashes but no picture.
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Re: loss of picture
When the power indicator flashes on a Sony it is saying "Hey, I lost high voltage". You are probably going to need a new Horizontal Output Transistor, a flyback transformer and possibly a High Voltage Block. None of the parts are that expensive from Tritronics (www.tritronicsinc.com). I just got them the other day for less than $100. You're better off just replacing everything mentioned rather than doing it piecemeal, once and done. I don't know whether you're capable of this repair or not. If you aren't sure have a professional do it. If you are going to proceed, remember safety! TVs are dangerous. Good luck.
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Remove the Battery from the Camera then press and hold the power button for 30 seconds. Then, reinsert the Battery pack and turn on the Camera and reset it to the original factory settings by selecting the "Initialize" option under Setup1.
If the issue persists then service will be required.
A white line across the screen is usually caused by a damaged/burnt out pixel(s) consult technical support for help, but you set is probably damaged beyond repair. I hope you have the reciept, my brother had a similar prob.
I can't tell you how to fix this set, but I can tell you that its not a "lamp" issue as this doesn't have a lamp. Its a 3 picture tube projection TV. the three tubes are in a red green blue format, and average about $175 for each one, not including the labor to install them. your problem, may not be the tube, but just a power supply problem, but there is a chance it is.
You plasma still under manufacturers warranty. Most electronic devices have one year warranty.
The failure in your TV can only be corrected by repairing it.
I would suggest to call philips and ask them to find you an authorized repair center near you to get your TV fix under their warranty.
What you are decsribing sounds like your picture tube or tubes have been scored (permanent burn marks on the picture tube phosphor). The sure way to tell is to remove the front screen and look into each of the three lenses while the set is on. You will see a black image of your pen mark within the picture. Did you recently have problems with convergence or the set shutting down (turing off by itself for no resaon) ?