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My changhong plasma TVs turns on to no pic no sound not even a flash on the screen

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Fault at its main digital board. Short circuited component/s at it. Contact any service technician; or the authorized service center. If you wish to get some details; check the site linked here. Pull up older posts.
http://electronicshelponline.blogspot.com/
In most cases, the main board might have to be replaced. If so, a software [firmware] update too might be necessary.

Posted on Apr 23, 2017

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Posted on Jan 02, 2017

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Hello.i have a tv plasma neovia neopl4200es but inside is all samsung.i have a problem with the display because i don't have colours with it should be,and the image is a little bit flashing Before was...


Sounds like supply voltage problem to its display panel. Every plasma display panel will have its own Va & Vs voltages; which will be marked at the silk screen on the display panel itself. It might differ from panel to panel. Even a slight difference in these voltages, will cause unexpected display nature. This is true to all Plasma TVs; irrespective of its brand and screen size.
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When i turn my samsung 50, no pic or sound 3 lcd lights keep flas


Hi friend,,,
welcome to fixya

Commonly for plasma tv's if the screen went out,,the problem will be the CATHODE RAY TUBE,it is costly to buy.if you want you can buy it,,or it may be the D-board problem will be also,,,
but it is unusual,so check the tube.

if your satisfied with my solution PLEASE RATE IT

thank u...

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caypianan@yahoo.com

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1 Answer

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If you have confirmed that your power cable is connected properly from your TV to the wall outlet (bypass surge protector strip if you are using one), then no picture and no sound is typical of SMPS (Power Supply) board gone bad. It can cost upwards of $200 plus labor. The good thing is, LG generally offers two (2) years parts and labor warranty for their big screen TVs. LG Repair turn around time is usually fast. Goodluck!

FixYa!

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