Question about Pioneer PureVision PDP-504HDE 43 in. Plasma Television

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Pic dissolves then tv switches off - Pioneer PureVision PDP-504HDE 43 in. Plasma Television

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  • smatharu Feb 03, 2010

    the picture image is frozen even though the sky box is not connected. It is of very poor quality, then the picture starts to dissolve and the screen darkens then it switches off. The light on the standby on tv flashes three times.

  • smatharu Feb 03, 2010

    stays on for 2 secs. the tv is 5 yrs old.

  • Harleen Nash May 11, 2010

    How long does the picture stay on? How old is this unit?

  • Alexander  Moore
    Alexander Moore May 11, 2010

    looks like overheating of power supply. make sure, you have good air flow to the set. it has a few fans, draws a lot of dust inside. First, need to open the set and see, if does the same with back opened. It quite a task, though.

  • Kim Yearick
    Kim Yearick May 11, 2010

    If you could supply more info I may be able to help. If you turn it right back on what happens? Does it flash or do anything funny before shutting off? It sounds like a short but we need to try to zero in on the location. Let me know the answers and I will see what I can do. hardrocko

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First off place a fan as close to the back of the tv you can, this will cool the tv's powerboard components, it might prolong your tv life for months.Now for the diagnosis and repair;The caps (capacitors) in the powerboard are going out. This is a very common problem in all class and price ranges of modern lcd and plasma tv's/ monitor's. I don't know if this problem has been like this for awhile or it just started, but either way, if the tv takes an abnormal amount of time to "warm" up then it most likely will go out all the way sometime in the (near) future. If you have a tiny bit of will and knowledge ypou can open the unit and get to the print board. Examine this for "popped" capacitors, they will have a buldging top instead of a flat one. Im gonna try to include a pic of them here, if i can get it this time, I've tried bfore lol. But you can google image a "popped" or "bad" capacitor and you would be able, with ease, to diagnose if you have any of these. Usually only one or two. Radioshack sells capacitors (couple anyway) for $1.59 each. MAKE SURE the replacement is of the SAME voltage or HIGHER, or you will be right back replacing those 2. Every capacitor has a negative pole marked with an (-) on the side of the capacitor(by one of the "legs", always puit the negative (-) "leg" of the new capacitor in the same hole in the printboard as where the previous negative (-) "leg" of the capacitor was ( a capacitor with the negative and positive "legs" put in backwards will result in the new piece "popping" as sson as you turn it on!!) make sure the "uf" rating (for example the most common popped capacitor is the 1000 uf) is the same as the one you are replacing. I needed 1000 uf, 105 c and 26v (volt) ratings for the 1 capacitor I needed to replace to fix my LG 19" lcd panel monitor I found by the trash that the light came on off, but it didn't come on. I replaced that capacitor with ; 1000uf, 85 c and 36 v (volts0...It works fine eventhough the volts and the temperature rating (36v and 85c) was not the same as the (26v(volt) and 105c ) capacitor I removed !! Further, I've replaced capacitors that had the celcius rating of 105 with the only ones Radioshack had, namely 85 c(celsius) they have been working great, but I'm not sure about any effect, nor have I heard or read (yet?) about that making an urgent difference. Many threads that I've read people have done the same, so we should be ok (my stuff has been running good for a while longer then most brand new ones!.............(all these ratings ; 'uf ' and 'c' etc are on the side of the capacitor you are replacing and on the side of the ones you are replacing them with)...For all this all you need is the cheapest solder gun u can find (I bought one for $7.99 at Radioshack), a camera (to take pictures as you go to remember how to reassemble the unit) and, once you have your materials, 20 minutes to replace 2 or 3 capacitors and you are good to go...Most monitors and tvs (lcd/plasma) I've seen you have to lay flat on the ground/bed/blanket etc, to work on (screen side down). Usually there are 2 or 3 screws (or a few more) to remove, then you will have to carefully (its comes off easily most times)insert a flat screwdriver inbetween the casing and gently pry it up as you go around the whole frame. Sometimes you have to remove the little washer arouind the cable input orso, just be gentle and you cant go wrong. Once insidet here will be a box with wires running to the sides etc...unplug, gently, these wires and open the box. Inside you will find 2 or 3 circuitboards, check them all for "popped" capacitors, replace, reassemble and plug it in....Have fun becoming an overnight tv mechanic lol! If this helped you (or not) then please rate, thank you!pic dissolves then tv switches off - 353c3a6.jpg

Posted on Feb 04, 2010

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