My LG 42PX5D 42 in. plasma is about 15months old and suffers badly from "sparkles" during light to black transitions when displaying Sky digital TV pictures. I have changed to satellite to TV scart cable to a heavy duty gold plated version but no improvement was shown. Does anyone one know what might cause this "sparkling" problem and how it might be cured?
Makes you wonder why nobody is taking on the problem, doesn't it?
Well , to the best of my knowledge, it is because nobody really can.
To understand why you have to understand what do they sparkles come from.
They are random electricity discharges coming from capacitors or other components that act like capacitors, but mostly capacitors.
When laymen hear about capacitors they usually associate the word with bulged electrolytic capacitors, which often cause problems in electronics of all kind.
Well this time it isn't about them.
It's about all other capacitors - or other components exposing similar qualities - which are installed on the board. Most of them are small filter capacitors put in parallel to the big ones or to other passive components such as diodes and resistors.
The excessive heat developed by the sustain boards damages those capacitors. It hardens the electrostatic material they are made of and small breaks in it start occurring at voltages that shouldn't otherwise be causing issues.
The trouble is, they can be everywhere. You can't just pinpoint which ones were caught at fault and causing the sparkles.
When it gets REALLY bad eventually the whole capacitor burns and either shorts or, more commonly, just breaks.
Believe it or not I've seen a board that exploded before my very eyes and , after the explosion, started working LIKE A CHARM!
Turned out a small filter capacitor had blown. It as not essential for the board's functionality and after being problematic for so long and causing image deffects it had eventually shorted completely and literally exploded.
Luckily, the short it had created was too short in time and apparently in a circuit that could take the load for a short while without getting damaged.
So after it blew everything worked just great!
it's a real story from my repair experience.
Hope this helps all consumers, DIY enthusiasts and competitors alike :-)
For more you are welcome to visit our site and read our tech repair blog at
http://www.coppelltvrepair.com
and
http://blog.coppelltvrepair.com .
Good luck!
Posted on Dec 04, 2010
I am trying to change the channels from my tv without using the remote and the logo 'keys locked 'keep appearing..
Can i use a universal remote instead too solve my problem as i do not have the original lg remote controller?
Or is there a way too 'unlock' the code?
PRESS MENU BUTTON THEN UP / DOWN BUTTON TO SELECT SPECIAL MENU THEN TURN CHILD LOCK OFF
Posted on Nov 14, 2007
Hi my 42 lg plasma has coloured lines all over it this morning i can hear the channel in the background there is no picture just the coloured lines and idea what is wrong and can it be fixed?thanks
I dont know the model of this televsion its 3 years old
If the Video (Picture/Pix) is gone but you can hear the Audio (sound), then it could mean the YSUS PCB Assembly is gone/kaput/finish. Can replace the PCB, not repair the PCB due to timing circuitry involve. Cost maybe roughly $500 depending where you located. The PCB is located on the left hand side of your TV when you are facing the back (Back open). Might find 3-4 brown flex membrane connecting to the plasma panel. The PCB has a silver or black aluminum heatsink (big) on it.
Good Luck.
Posted on Jan 05, 2008
WHERE CAN YOU PURCHASE THESE? I OWN A VIORE THAT USES LG PARTS.
I have a viore plasma tv. The video board is broken. I am unable to get it heres is the part number: P/N: HY679-8205-DST. The tv model is PDP4210EA. Can you help me find this part?
Thank You
Posted on Jul 06, 2008
I am getting a vertical black bar on my Daewoo Plasma screen which comes and goes. We have a 46" LG plasma, with vertical lines in a variety of colors: red, blue, orange, green, you name it. We have 3 lines on the right and 1 on the left. Please help!
YES YOU HAVE DRY JOINTS UNPLUG FROM POWER SUPPLY REMOVE THE BACK/ INSIDE YOU SHOULD SEE AT THE BOTTOM SEVERAL RIBENED CONECTORS FROM THE SCREEN ITSELF? UNDERNEATH YOU SHOULD BE ABLE TO SEE 2 OR 4 COMPONENTS CAREFULLY APPLY A HOT SOLDERING IRON AN SOLDER THE ONE THAT YOU ARE HAVEING PROBLEMS YOU SHOULD NOW HAVE FULL PICKTURE AGAINE ANY PROBS email me [email protected]
Posted on Mar 23, 2008
LG RU-42PX11 42 plasma TV has a 2" black bar running vertically on the right hand side of the screen. Picture is fine sound is fine. You can watch video and TV. The black bar does not move about 1" from the right side of display then 2" of black running vertically on screen. The rest of the screen is fine so from right side of display there is 1” of good video to the black bar 2” of bar then good video. If anyone knows about this black bar problem what might cause it what to do fix it. Please let me know. Thanks
The screen does not work properly .Ribbon wire fails.
Posted on Jul 12, 2009
I have a 42in LG plasma tv, it has sound and no picture. What could be the problem? Give me an estimated cost of repair.
Thanks james
Hi James,
This could be one of two problems. I can't narrow it down any further without having the set in front of me.
1. The plasma panel or the componets which supply electricity to the plasma in the panel have packed up.
2. The video processing unit in the set has gone.
As for the cost of repair, if it's the panel, buy a new TV. It'll be cheaper. If it's the component that supplies the electricity to the plasma on the panel or the video processing unit, expect to pay between 300-400 as a conservative estimate for parts. Labour would be another 100-200.
Hope this helps
Posted on Apr 28, 2009
MY SON HAD THE TV ON MUTE LAST NIGHT AND TURNED IT OFF. NOW WHEN WE TURN IT ON IT HAS NO SOUND. WHAT'S UP????
You did not give a make and model for the TV so I can only offer a general solution. You may need to reset the sound board. This can be done simply by unplugging the TV for about 10 minutes.
Posted on Jun 22, 2009
I have a LG 42PC5D I was using my computer for a while and now it shows invalid format if I hook up my laptop or desktop through VGA or the PC plugin I am now getting this error.
now on my cable box using HDMI I am getting it I unplugged the TV and cable box and let them sit over night and still the same thing when I got up invalid format
is this a known issue or is there a rest button on the TV
Someone Help Please the TV is just over a year old
I have a LG plasma and I am trying to connect my PC via VGA and I am getting the "Invalid Format" - can you please tell me what is the problem? Thank you
Posted on Sep 22, 2011
my lg plasma tv keeps freezing what should i do
Some LG plasma TV is experiencing display freezing problem like yours is is called "frozen transmissions". It will require a software upgrades to stop the issues with "frozen transmission". You can register for the free, in-home software update on www.lghdtv.com.*/softwareupdate (the * is your country...ex. Australia=au, Philippines=ph....etc) or call LG's customer service center.
Posted on Sep 29, 2009
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