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DLP television 52'' picture freezes or tv shuts down.

Started like bad signal, had H.D. box replaced, picture freezing, sometimes comes back on sometimes completly shuts off and will not come back on. In all cases so far can unplug, rebout and it comes back on. Have been told by friends that maybe bulbs are bad. T.V. bought in 2006. Used mainly in evenings and weekends. Please help?

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  • viper9710123 Jun 17, 2009

    52" DLP Samsung picture freezes, blacks out, comes back on some times. sometimes goes out and comes back on sometimes have to unplug and rebout for it come back on. 3 years old, used moderatly.

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Your problem is either your lamp or your ballast or the dmd board......
before u cud open up ur set to check whats wrong... kindly ensure if u have warranty or not as opening a unit when its still under warranty will void the warranty......

fist we ll deal with it one by one.....
Have you reseated the lamp? Try this...Some times the connector is not being connected well and don't make the full connection.

Also try reopening the cover and putting it back, maybe the sensor for the lamp cover is not fully pressed in.......the door where the bulb is must not have been closed tight enough. open it, reseat the door, and screw it down tight.
it's the mechanical location of the switch behind the lamp door. By design, if the lamp door is not completely secured, the switch will not be depressed and therefore the TV will not start up for safety reasons. What's happening in some of the random shut-down events is the switch is bent a little bit, but just enough to prevent consistent contact even with the lamp door adequately secured. The fix is to turn off the TV, bend the switch out a little so it will make good contact when the door is closed, replace the door, then turn on the set.

The above fix has resulted in complete resolution for many people with this problem.

ur second thing to check is your balast could be bad. It is the power supply for the lamp
first is to see if there is any power to the ballast
Check fuses or other causes of power outages in the power supply board.....
then check for incompatible ballasting........
Correct ballasting is essential for dependable HID lamp operation. Any HID lamp will perform erratically or fail to start on an incorrect ballast. Make sure that the ballast label data agrees with the line voltage and lamp used. Incorrect ballasting will generally cause a lamp to fail prematurely.

then finally check for Defective Shorted Ballast A shorted ballast will generally cause the seals at the end of the arc tube to rupture with an indicative blackening in the seal ring area. Shorted condition may be due to shorted capacitors, shorted leads or shorted winding. Replace components as required.
if ur replacing the ballast Make sure that the ballast label agrees with the line voltage and the installed lamp. The 1,000 watt Mercury lamp, for example, is made in the H34 (High Current) and the H36 (Low Current) types with a separate ballast available for each type. If the H34 ballast is used with the H36 lamp or vice versa, the life of the lamp will be adversely affected and can destroy the ballast. A similar situation exists with S55, S56 and S63 150 watt high pressure sodium lamps.




Posted on Jun 17, 2009

  • SAM JAYANTH CHANDRASEKAR

    hi this is iversh again......


    with regard to ur dmd board...... if it comes to replacing that... it will cost u upwards of 700$ .... its like the mother board of the tv....... i wudnt recommend u to replace it ... u can rather put a couple hundred more bucks and get a brand new tv for that......




    if u found my advice and siuggestions helpful... kindly rate my service.....


    good luck with ur tv...

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Its the convergence board problems, you need to service that tv to an expert cuz its not an easy task though; you can use our repair directory to find the nearest Tech to you, cuz those things are heavy to taken serviced.

Posted on Jun 17, 2009

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