Question about Akai PT5492S 54" Rear Projection Television

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Flickering The picture is flickering light to dark. A few weeks ago I had a problem with blue screen but I unplugged the set and that problem went away. Could these problems be connected ?

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I will buy a new TV before I'll fall for this scam.

Posted on May 20, 2008

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Picture flickers every few minutes


There are several possibilities. This model is based on CRT (picture tube) technology, and has a high voltage circuit. This circuit consists of three heavy wires, one from the side of each picture tube (red, green and blue) going to a single connection block. There is another heavy wire from this to the high voltage transformer on one of the circuit boards.

First, unplug the set, and wait 20 minutes to make sure everything is cool and residual high voltage charge has drained away. Check the wires at the connection block to make sure they are not loose. There is usually some sort of retainer clip to lock the wires in place, make sure these are not broken or unlatched (sometimes they get brittle with heat and aging). Frequently these are covered with a thick layer of dust held on by electrostatic attraction; gently vacuum this off. If all looks good, plug in the set, and wait until it's dark outside. Turn on the set with the room lights off, and look at the high voltage parts. If you see a blue corona glow or sparking, that part has an insulation breakdown problem or a bad connection. It is normal to see an orange glow at the bottom of each picture tube, and you would also see the three colors of the picture coming out of the tops of the picture tube. WARNING: do not touch the interior of the set while it is on, especially not in the dark.

Another probable cause is a cracked solder connection on the power/deflection board (the one with the high voltage transformer on it). If the flickering is one color rather than white or a momentary darkening, the problem is in one picture tube circuit (yellow -> blue dropout; ->cyan -> red dropout; magenta -> green dropout). The picture tube circuit includes not only the high voltage (second anode) section, but also the picture tube drive connection on the base of the tube all the way back to the video processor and switching circuits.

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Did you try the OPTION menu---think I offered that to you a few days ago......

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You probably think it is going into hibernation mode when really your getting the black and blue screen(very dark blue) This is a result of your windows failing. Your windows has been corrupted and the fix is to purchase a new windows xp,7,or vista. If you purchased it from the store they should have you on warranty, But if it bootlegged you may have to purchase a new one.

Hope this helps ^^. Please dont forget to rate, Thanks

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the color pixels are different sections in the screen and the green section might be cracked

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Go to this site you need a flyback its the only onethey sell for an RCA number 259296 cost less than 50.00 and they provide free tech support so you can do the repair yourself which takes about a half hour. a repair shop will charge abut 400 to replace the flyback. heres the link
http://servicemanuals.vstore.ca/

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1 Answer

Picture Flickers Briefly Shortly After Power on


If the set is only a few weeks old you should put a claim for a warranty repair or exchange I believe is the back light(lamp)doing the flickering and should not be doing that at all and it will not go away by itself,it might get worst. Let Us know how it goes or if you need more information.

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