Question about Samsung LN52A650A LCD TV

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Samsung LCD LN52A650AF - Glittery Red Green Screen Pixelations that moves around with changing figures on the picture

My Samsung LCD TV is little over 3 years old and recently developed this problem where when we turn the TV ON, the picture background is Redish (instead of usual black) and when the picture come on, we see this glittery Red & green pixelation around the figures on the screen. It is very dynamic (not a particular section of the screen) and from what i have observed is that it's mostly around the darker or black portion of the picture. Does anyone know which part of the TV has gone bad and needs to be replaced?.

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Fault at its main digital board. Short circuited component/s at it. Contact any service technician; or the authorized service center. If you wish to get some details; check the site linked here. Pull up older posts.
http://electronicshelponline.blogspot.com/
In most cases, the main board might have to be replaced. If so, a software [firmware] update too might be necessary.
Before going further; try a hard reset first. If it does not help you, replace the main digital board. There are two methods to reset TVs. The first is simple to do; a Hard Reset. The other is somewhat skilled; is a Factory Reset (System Reset). To make it a hard reset, just unplug the TV from AC mains wall socket, and re-plug it back after 15 minutes or so. If you do this by overnight is better. This procedure will make it a hard reset. If you want to make it a system reset [Factory Reset]; you have to enter its service mode option, and select the factory reset option. If you wish to get some details; visit the site linked here.

Posted on May 14, 2017

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SOURCE: Bad picture/colours on Samsung LCD TV

loretta change your power pack
entwined  try another cable

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I took it back and got a full refund.

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This is a problem in one or more boards in the TV.
If your TV is still under warranty please call Samsung to get if fix at not charge.
parts for your tv are not cheap and labor is not eider.

Posted on Jun 15, 2009

  • 2 Answers

SOURCE: Samsung Plasma TV

I have this problem too. I have had a technician over to service it twice already and I picked up on a few things he did to fix it. Here is what I learned. the raining pixels has to do with the timing in the circuit boards. Basically telling them when to turn on and off. I would only recomend this solution if you are technically inclined. Remove the back from your tv on the left upper quadrant you should see a small gray dial with marks that a Philips screw driver would fit it. There are three or four of these on the boards scatter across the tv. Each on corresponds to the colors firing in sequence. Take your Philips and turn it to either extream. You should see a your screen go crazy with whatever color corresponds to the dial. Then ever so slowly turn the dial undtil you don't see any more flickering. Do that with each dial and you should be able to get rid of most of the flickering. on the right side of the there is a panel underneath the support bar with orange adjuster. I don't know what they do but they also help reduce the flickering. A word of caution. If you can use something non metallic to adjust these dials. There is a small metal lip to keep the dial from turning too far. If your screw driver touches it. It will fry the dial and your screen will blink red/yellow or blue. and you will have to buy a new board. Luckily they are only about 30 bucks, but I learned the hard way.

Posted on Jun 24, 2009

  • 267 Answers

SOURCE: Green purple and blue bars rolling through screen

It is probably the main total assy needs to be replaced.

Posted on Jun 26, 2009

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