Question about Dell W4200 42 in. HD-Ready Plasma Television

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No picture or sound in 13 month old set

The screen is completely black and there is no sound from any source including satellite, DVD or computer The red light on/off indicator is working and the light turns blue when turned on, as it should, but nothing else happens. I have tried re-booting several times with no results. I have tried the trouble shooting tips in the manual with no results. It seems that the problem is electrical as in a short or disconnected wire between the off/on switch and the rest of the set (but I have no technical knowledge)

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  • Anonymous Jun 08, 2008

    I hit the on switch, and it will click on and rigft back off

  • glisof2 Sep 01, 2008

    no picture or sound in a 3year old set it will turn on and off but still a black screen and will do nothing at all. Dell W4200 42 in. HDTV-Ready TV

  • Anonymous Mar 19, 2014

    The set was turned off at the power point with the on/off switch turned off. The power was switched on and the set was turned on. The red light lights up for a second or two the nothing. An odd noise emanares from the on/off switch area. We have tried mnay times to trun it on with the same result. The set is only two years old.

  • Anonymous Mar 28, 2014

    When I turn my tv on, it comes on and it flashes the picture then the display goes black. But the led light is still blue which indicates that the display is still on, but there is no picture nor sound



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This can be the power supply, or the main display driver board, or the main display itself. These are normally serviced at the modular level. You will have to get in touch with the Dell rep to have it serviced. You should try connecting a video source like your DVD directly to the set, and with different cables, just to rule out a problem on the way from the source to the set. If it comes to buying a new set, I would suggest you to get an extended warranty(longest possible). These sets can be dramatically expensive to service if there is no service agreement. Hope it works out on the cheap side

Posted on Mar 19, 2006


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Is this set hooked to cable? Is there a cable or satellite box? When you press the menu button, do you see the menu on screen? Do you see anything on the screen, such as snow, or is it completely black? If the signal is OK and the TV has no picture at all, the red LED on the front of the set should be flashing a certain number of times. If the LED is flashing, the computer has detected a problem in the set and shut the picture off. If this is the case, there is no way for you to bring the picture back by pressing buttons. The number of times the LED flashes is the computer's way of displaying exactly why there is no picture. The set should then be serviced by a qualified tech familiar with Sony TV's. If the LED is not flashing and the menu comes up on screen, check your signal source. If you are using a cable or satellite box, that box could be bad, and if you are using RCA jacks, the yellow (video) wire could be bad or pulled out.

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