Question about LG 42PC3D 42 in. Plasma Television

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When i turn on my lg plasma flat screen tv the picture comes out very faint and i cant ajust brightes

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Souunds like main power regulator board fault. Check and replace damaged component/s at its main power regulator [SMPS] section circuit. Contact any service technician. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts.
http://electronicshelponline.blogspot.com/
It will be best to replace the power supply regulator board as card basis rather than making "Surgery" to it; which usually will make loss for both money and time. Even though you can make it right, it will cost around an amount equal to the cost of a new board; including the cost of (spare parts + service charge) More to say, most of the spare parts to it will be difficult to get from open electronic spare part market. This is true to most of the flat panel TV power supply boards; irrespective of its brand and screen size.

Posted on Nov 19, 2014

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Posted on Jan 02, 2017

  • 15 Answers

SOURCE: 42 inch LG Plasma TV - Lost picture

ysus pcb that supplies voltage to the panel is faulty

Posted on Dec 15, 2007

  • 3 Answers

SOURCE: 42 inch LG Plasma TV - Lost picture

Our LG 50" plasma tv screen went black after a popping noise but still had sound, after great diliberations decided to take the back off and have a peek!
We unplugged the tv and tested the fuses (there were three we could see) one had blown, the one on the left as you look at the back of the tv it also has one above it. We wrote the code/seriel number down and took the fuse to the electrical wholesalers Maplin and bought a pack of 10 fuses for £1.29 replaced the fuse in the tv and everything now fine!!!!!!
Hope this might be of use to anyone whose lost the picture after a loud popping/snacking noise but still has sound.

Posted on Jan 17, 2008

  • 458 Answers

SOURCE: 42" LG Plasma tv, no picture - black screen, but have sound.

Most a likely a problem with your Y-Sustain board which will then not drive the screen giving a black picture. The fuse on the board may be open circuit & need replaced but most likely you will need to have the sustain board replaced.

Posted on Oct 28, 2009

  • 41 Answers

SOURCE: LG plasma TV turned off, after the picture very light

I think you have a defective power board. the pop sound in coming from the board and giving you a low output voltage. do it yourself price about two hundred for parts.

Posted on Mar 13, 2010

  • 1 Answer

SOURCE: My 50 inch plasma LG tv has no picture only sound. There was

My 50inch plasma LG tv has no picture only sound.

Posted on Aug 19, 2010

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Sounds like you have a backlight problem. To verify this, turn on the set, dim the lights in the room, and shine a bright flashlight on the screen. If you see a faint picture you have a backlight fault. It could be as simple as a bad capacitor in the power supply, or a faulty inverter board, or in rare cases a bad backlamp.

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When the picture goes out again, dim the lights in the room. Take a bright flashlight and shine to on the screen, do you see a faint picture?

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this faint picture issue is usually caused by a bad z sustain board. it is the smaller scan board on the right side of the tv when viewed from the back. it has some large cables that energize the plasma panel, dont confuse with the y sustain which has the tiny ribbon cables that address each line of the picture.
there should be a # on the board indicating the part number, plug it into a search engine to find parts.

this could also be a low voltage or something else, check the Vs and Va voltages and confirm theyre correct with the ones listed on the sticker inside the tv. Be careful this is dangerous and you can get shocked if you not familliar. The heatsinks can be energized and shock you , exercise caution. if you order a z sus board, make sure you can return if it doesn't fix. I'd say 95% chance its a z sus

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Switch on but no lights on front of tv looks like switch fault


LG PLASMA TV LGE PDP 030826
WHEN TURNS ON ,THE BRIGHTNESS IS DIM THA WE CANT SEE THE PICTURE CLEARLY.WE HAD REPLACED PCB.IT WAS O.K
BUT AFTER 15DAYS THE SAME PROBLEM ARISED.AGAIN I HAD REPLACED THE PCB BUT I CANT GET THE BRIGHTNESS.
IF U R HAVING ANY SOLUTION PL.GUIDE ME.
SANJAY JAIN
RAIPUR (C.G.)
INDIA
e-mail: onida.bhavyainnovation@live.com

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LG 50 plasma


yes that was from that cut power you should go now to the authorized service to fix that problem

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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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