Question about LG 42PX5D 42 in. Plasma HDTV
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 :-)
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Posted on Dec 04, 2010
A couple of months have passed since I contacted Akaii for service/replacement under warranty. They referred me to two service centers who both refused to make the service call -- unless they got paid extra from Akaii for the long trip. although I am in a major metro area, Akaii cannot find a service dealer to make the call and they say that replacing the set will take months.
They refuse to let me speak to corporate or even to follow up.
Do yourself a favor DO NOT BUY ANY AKAII PRODUCTS!!!
Posted on Feb 15, 2008
Many TV's with an LG plasma display (or built by LG for other manufacturers) have a manufacturing defect that has been reported widly on the Internet. LG, Akai, Samsung and Zeneth among others.
The sparkles are (usually red) visible on a black background with all inputs after the set has been used approximately one year. Soon after a pop is heard and the picture no longer shows at all.
LG and some other manufacturers using the LG displays have not acknowledged this defect and will only repair them free during the warranty.
Often techs will merly adjust voltages and or picture controls, which does not fix the problem but it just disguises it -- until the display blows -- usually after the warranty expiration.
I own a 42" Akai that is 9 months old that has recently been showing the red sparkles. I just called for service but feel that the set should be replaced with a non defective one and a new warranty.
Does anyone know what the laws are about manufacturer defects and how to get Akai or LG to make good?
Posted on Jan 15, 2008
Mine had the same sparkling problem with red dots. Luckily I had an extended warranty because adjusting the voltages did not fix it and the actual plasma panel had to be replaced. Now I have colour problems where skin tones are not displayed properly and result in bright pink or green shades instead of true skin tones.
Posted on Nov 04, 2007
Adjust the Vs and Vscan voltages on the panel power supply. Stay within the ranges on the sticker on the back of the panel. Usually a change of 10vdc is enough to cure
Posted on Aug 30, 2007
Unfortunately, I have no solution but a somewhat similar problem. I have my computer connected via an HDMI cable to my Vizio 55" 240 Mhz 1080i TV. When I use the tuner in the TV to watch TV, I have no sparkles. But when using the TV as my computer monitor, I've noticed sparkles in dark areas of whatever is being shown. The sparkles are not red. They are white. I have a avry dual tuner TV card in my computer that I use for watching and recording TV and it seems that the sparkles are the worst when using the TV tuner that's in my computer. But the sparkles are even there with my desktop screen. The video card in my computer is not the best nor the worse. It's an ATI HD6570 Radeon with 1GB of DDR3 memory with no fan for cooling. Just a large heat sink disippator. It appears that the sparkles get worse the longer I watch TV using the TV card in the computer so I suspect it's probably the graphics card that is causing the sparkles. If anyone has some insight on what might be causing the sparkles, I'd appreciate hearing from you.
Posted on Feb 15, 2012
Hi, Sparkles. if anyone knows how to fix this, would be greatful Regards,
I came across this LG 42PX5D 42 in. HDTV Plasma Television question on FixYa.com and thought you might be interested in reading it.
My set is around 16 months old & has recently started doing this. it is linked to a Sky HD box.
I have several inputs including P.C using-(RGB)SKY -(HDMI), Home Cinema -(AV4) and DVD -(gold plate scart (AV2).
The problem is active on all connections/inputs despite checking the connections. Occasionally (very rarely) it disappears for a programme or 2.
At first didn't know if it was my sky signal strength but obviously, cant be that, if its active on all inputs. going to try the idea on fix to see if it works.
if anyone knows how to fix this, would be greatful Regards,
Posted on Oct 17, 2007
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