Question about LG 50PC5DC 50 in. Plasma HDTV

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95% OF THE SCREEN IS DARK. Have sound

I have a LG 50PC5D Plasma TV. 95% of the screen light up. I can see around 3" ins of rasta on the top of the screen, and the rest of the screen is dark. Do you now what could cause this problem? Please help. John.

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  • 227 Answers

Hello your problem is either the Y sustain or the Z sustain boards i recommend to replace both.

Posted on Jul 12, 2009

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Posted on Jan 02, 2017

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Was given Vizio p50hdtv10a plasma, it has flashing screen no picture or sound, with lights off in dark room I can see around blueish circle in center of the screen, looks like bad plasma screen.


probably is junk and that is why it was given to you
don't bother fixing it ( if possible ) because plasma units use about 95% more power than an LED unit so save you money on both accounts

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These blinks [flashes] are fault indication (Error Codes). From the number of blinks occur at one time switch ON, you can get an idea about the faulty circuit section inside it. This will make repair easy. These are called blinking codes. Make sure about the exact number of blinking of the standby/power LED, by switching On & OFF the set, for at least two times. Count it carefully. If you wish to get some details, check the site linked here. It has details about blinking codes, and fault locating procedure, to many popular brand TVs and other devices.
http://electronicshelponline.blogspot.com/
http://electro-medical.blogspot.com/
Blinking codes details of many popular brand TVs are given. Surf the site with patience.

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I have Lg 50pc3d-ud and it has very dark spots on the tv that moves around. The screen is also very dark no matter the settings. The dark spots aren't always there, they go away sometimes but if...


This problems ur tv are having only can be two causes 1) The Y-Sustance main tuner logic board or 2)The tv Plasma screen panel itself it is slowly leaking radiaton and dying,if it is the tv plasma screen panel itself it is dying than the tv not worth repairing because by replacing the plasma screen panel itself will cost the same as a new tv itself.The Y-Sustance board-that the tuner main logic board that take in the tv incomming broadcasting signal cable.Tries websites like Shopjimmy.com,Ebay.com to buy a whole new refurbish Y-Sustance main tuner logic board for replacement.This tv problems are 50/50 between the Y-Sustance main tuner logic board or the very exspensive plasma screen panel itself.

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I have a LG42PG20 plasma tv that the sound works, but the tv has no picture. The screen is blank, dark in color.


cleanning inside,,,,check the red wire that to the screen inside moved it around,,,,plug in,,,try on...works....or not.so on..broken....not around shocks

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If you wish to get some details; visit the site linked here. Pull up older posts.
http://electronicshelponline.blogspot.com/
faults & possible causes to LCD & Plasma screen are given with illustrations. You can get an idea about the fault to an extent. Faults to all LCD & Plasma screen are similar, irrespective of its brand and screen size.

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3 Answers

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first try the address board or buffer board.if this
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1 Answer

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sounds like it could be a cabling issue, try replacing the cabling (if you have another tv, you can borrow the cabling before purchasing new set of cabling)

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1 Answer

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You need to get this tv service asap.i beleive that the problem is in the inverter board or yb board.


good luck

caypianan@yahoo.com

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2 Answers

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sounds like the internal screen has cracked look closeley to see if you can see any cracks if so new screen im affraid if no cracks suspect power board

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