Question about LG 50PC1DRA 50 in. Plasma Television

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L troubleshooting a lg 50pc1dra

My tv will act like it turns on and then shuts right back off no time for a picture to show up or sound. it did this a few months ago and somone told me to unplug it and press somthing but basicly reset it and it turned right back on

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6ya6ya
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Posted on Jan 02, 2017

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  • 19 Answers

SOURCE: LG 42LG5 TURN ON TV PICTURE GOES BLACK

This could be 1 of a few things here. Without opening up your set and trying to look at voltages or indiciator lights I couldn't tell you exactly without some more info.

Without looking at it myself here are my thoughts and where I would first look at.

It may be a main board because:
1) Main board processes all your audio/video signals. Bad main board means bad video processing. Could do that. Especially if the main board is not sending the right signal or a bad signal to the rest of the boards so they don't do their jobs. 

It may be a power supply because:
1) Power supply is well, the power supply. If it's sending inadaquete voltage to the main board you may not be recieving enough juice to keep that main board doing your video processing or further up the line keeping enough juice flowing to your TCon board to keep it telling things where to go and what to do. The power supply sends voltages to your Ballast board(controls your lights) and to your main board through which power is supplied to your TCon board via a LVDS line and a +12/+16V signals. If the power supply isn't pumping out enough juice to keep the TCon or Main Board running, it could be a problem. By the same token it could be that your P/S isn't sending power out to your ballast board. 

It could be a TCon because:
1) If the TCon is bad, you won't get your pictures. This could be the TCon board itself or the LVDS cable from your TCon to your Main. However, with few exceptions, if it's a bad TCon you're looking at a total panel replacement. 

It could be a ballast board because:
1) The Ballast Board controls the lighting behind the LCD screen. If this isn't working right you won't be seeing much of anything without that back lighting. If this is bad, it's a panel replacement. These are not field replaceable items by LG. 

Based on the symptoms, without more data or a eyes-on view of it, I would say you're most likely looking at a Main Brd or PSU problem. 

Posted on Feb 21, 2009

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SOURCE: no picture but has sound

hey i think i know your solution on how to fix that you should get another tv lol jp go to my web site and I'll tell you a couple of methods to try.its meatspin.com

Posted on Feb 28, 2009

  • 6 Answers

SOURCE: LG 42 LCD no sound or picture

This is probably bad capacitors on the power supply board. My LG 42LB1DR has a known problem with this and I replaced the four bac capacitors myself and saved 5-6 hundered dollars that I was also told that it would cost to fix. I fixed for under 10 dollars and about 20 minutes. LG knows about it but they dont really want to admit it. My TV was only 26 months old when this happened. The four capacitors are made by Samxon and are 2200uf @ 10v. They are junk so even if you have the entire board replaced for say $200 its just going to happen again. They need to be replaced with a different brand.

Posted on Apr 29, 2009

rulds2008
  • 3866 Answers

SOURCE: LG 50PC1DRA POPS AND SHUTS OFF

Your right its a power supply issue and what your hearing is capcitor pop or maybe even a fuse, Well if you know about eletronics sure the new psu is going to be $150 bucks

hope this helps

Posted on Jul 18, 2009

  • 5 Answers

SOURCE: LG 47LC7DF Green Light Blinks 16 Times - No Picture or Sound

The lights indicate what the issue is. Kind of like your check engine light in your car tells you something is wrong with the engine.

Posted on Aug 31, 2009

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