Question about Flat Panel Televisions
Our plasma started "flickering". I will try to describe it. The picture is faded and blurry in the background of blinking or flickering. If I disconnect the cable box or change the input, the problem is still there. When there is no source and the tv is just on the blinking is there and the picture is a bunch of red, blue green dots, probably each pixel. I have the TV back off and ready. Any help would be much appreciated. Vizio tech support said I need a new "main" board. I do not probe much after that. Would you agree? If agreed, which baord is it? Is there a reputable place to get the part?
SOURCE: red pixels
This prob shows up often in this set. To solve , remove the 4,784 screws from the rear cover. Plug in and connect the set. Operate until red dots appear. Locate the V_SET-UP control on the Y-SUS board ( the one on the right from the rear ) . VERY CAREFULLY and SLOWLY adjust till dots dissapear and STOP. This adjustment is VERY sesitive and requires only the slightest adjustment with a small insulated screwdiver and a steady hand. BE WARNED ... there are high voltages and high peak pulses on these boards. Not all heat sinks are grounded... some are quite lively. Dont touch anything else, unplug the set and carefully replace the cover. Good Luck..
Posted on Nov 08, 2008
I had the same problem and solved it with a factory reset. hold menu button dowm for 10 seconds and it will alow you to reset all the colors.
Posted on Jan 01, 2009
Try unplugging the TV for a few minutes (discharges the ballast/ps) then plug in and attempt to power on. I have the 42P Vizio over two years old and ran into the same problem a few times. First thought was a power supply issue, but the unplugging trick worked. Good luck.
Posted on Apr 17, 2009
Very common problem on these sets caused by bad surface mount caps. Check on ebay for a repair kit it's the only place I know where one exists.
Posted on May 18, 2009
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
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