DELL W4200HD PDF

Click here to find out more. Dell also included a pair of wall-mountable speakers, complete with removable stands, so you can choose to use them or not depending on your setup. The user menus are clear and well laid out. That resolution matches most other high-resolution inch plasmas currently on the market, with the exception of 1,x1, ALIS panels such as the Hitachi 42HDT In terms of conveniences, the WHD comes fully loaded.

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Before touching the circuit board, I make sure the TV is unplugged. Then, I touch a piece of metal on the back of the TV that is grounded, i. This will dissipate any stored static electricity by the body and discharge it to ground. In particular, stay away from the large heat sinks with the yellow stickers on them indicating high voltage. Overview The power supply is the large circuit board in the middle of the TV.

There are eight connectors attaching the power supply to the other circuit boards on the TV. The supply provides about ten different voltages; V, V, 60V, etc for the plasma screen as well as 3. The power supply circuit board contains a wealth of information including its part number and a table of the different voltages it produces along their signal names Va, Vscan, Vstb, etc.

Test points for all these voltages exist on the left side of the board looking at the power supply as it is mounted to the back of the television. How to test I used a multimeter to probe the voltages at the testpoints with the TV turned on. In fact, if you do not know what you are doing, just stop here.

No point killing yourself over a stupid TV. If you dare The RTN node seen on the silkscreen at the top left connector and others is basically the common grounding point and is connected to Earth ground, the shiny metal backing of the plasma screen, and all the metal mounting pegs that the power supply is mounted to.

The black or negative lead of your multimeter should be attached to this point. I just stuck the black probe into one of the mounting studs and let it hang there out of the way so I could probe using the other red lead of the multimeter with one hand. Start off with the TV unplugged and turned off. Attach the negative or black lead of the multimeter to any mounting stud near the power supply board.

Now plug in the TV and make sure nothing explodes. Now turn on the TV with the remote control and again make sure nothing explodes. Is the screen blank? If so, good.

In my case, it was Va which is supposed to be 60V. Make sure to make a good contact between the testpoint and the multimeter probe. Your problem may lie in a different area. Numerous people have mentioned a problem with their Y-Buffer, the circuit boards flanking the left and right sides of the plasma screen.

Specifically, whitby see the comments section has found that the lower left Y-Buffer board was contacting the metal plasma screen backing and had shorted out. If your power supply checks out, look and smell for any indication that any of the Y-Buffers have shorted to the case. You may have to remove them and look on the back for shorted solder points. My problem was with the Va voltage of the power supply so I will continue discussing it in the next section "Debugging on the Bench.

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The Dell won that match by offering the best picture, but we cautioned then that its color quality might not hold up as well against models from more-established TV makers. And its seventh-place showing for standard-definition content and fifth-place rank for detail were not great honors, either. Of the eight models we tested, it landed in sixth overall. During calibration, we saw only unpleasant choices--settings that made the screen a bit too red or way too blue. We chose the former, as it measured closer to the industry-standard color temperature of Kelvin. With HDMI input, which we use for all TVs supporting it, the Dell does not allow users to custom-configure the color by tweaking the red, green, and blue levels. The TV put way too much red in what should have been neutral shades; faces, for example, had an unnatural orange glow.

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