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Re: i was looking ta the tv and it went off?
Open the back of the TV,and look at the can shaped items called capacitors on the board that the power cord is hooked to.If any of them have the tops,or bottoms bulged out,they need to be replaced.This should get it working again.I hope this helps.If you have any questions,please let me know.Thank You very much!
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How much lld are you? How many Plasma sets did you repaired so far? Do you think repairing a plasma TV will be very like eating a ripe banana?
Contact any well experienced service technician; man.
"YOUR WORDS above REFLECTS YOUR IGNORANCE IN SERVICING SUCH ADVANCED TECHNOLOGY SETS.
What else to say? http://electronicshelponline.blogspot.com/
It's obvious that the power supply failed. The most common parts in a power supply are a thermistor or a voltage rectifier, possibly even a voltage regulator. diodes or resistors can act as fuses too. A ringing sound can come from a fixed coil that isn't kept still with enough epoxy. Hope this helps.
If backlight went out then sound should still work. Are there any indicator lights to show power is coming on anymore? Try unplugging for 30 seconds, hit power button a few times, then plug back in and try to turn on. This drains any capacitors of power to attempt to reset (basically clearing the TV's throat).
Can also try something on a different input. If current input is composite, S-video, or component, try using DVI or HDMI connection as this uses a different board in the TV. If that fixes it, then at least you can try to replace one board instead of entire tv. :)
Open the back cover and disconnect the Y - Board Vs plug from the Power Supply board. Check the Vs voltage in Power Supply board when turn on the tv. If the Vs voltage is there, it means the power supply is good and try to replace the Y-Board. Otherwise, try to replace the Power Supply board. If your tv is still in warranty, just let the warranty depot shop fix tv for you.
Try resetting the TV. Here's how to do it - Unplug the TV's power cable. Keep the Channel Down and Volume Up buttons on the TV pressed and plug the power cable back into the outlet. You will hear a click when you plug it back in if the reset is successful. Hopefully this should restore your video and audio.