Question about NEC 42VP4 42 in. EDTV-Ready Plasma Television

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Power Supply I have a NEC42VP4 with a dead power supply. I cannot find any service information available on this set. Are there any "stock faults" with the power supplies in these Plasmas. Thanks Jim

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Re: Power Supply

I have the same problem,

first poser supply lasted just over three years at 92-- foot elevation,  the next one lasted 3 months, just long enough to get past parts warranty, and NEC/local tech wants $800 to replace the power supply that took 3 months to get in before.


Nope, just bought a new HD Vizio and moved on.  Better picture and BIGGER picture.

Posted on Oct 21, 2007

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It sounds like the problem is in the power supply board (75012667 / PE0626C / V28A00084501). There is a repair service available for this board at You may also want to check their blog for more information, or contact them.

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For the most part the power supply for sets is sold---no parts are available---they (all of them) only want to sell replacement boards and not stock tens of thousands of individual parts.

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Vizio VX37L won't turn on. The light on the front does not come on even when plugged in. I replaced the power supply unit and it is working correctly (tested power output using voltmeter). I was wondering...

Good day.

The common 3 causes of power supply breakdown.
  1. The power failure of main supply (brown-out)-Because when the power failure occurs,your ac supply is gone and when its back to normal,the first current that flows in the circuit is more higher than the normal.Specially when the power failure happens only on split seconds.
  2. Too much load-It is usually happens on the big screen like 32inches,40inches and more.Because when the TV is big the load of the unit is also higher.However it takes a long period of time to malfunction the Power supply because it is specially design to that load capacity.
  3. Heat-Too much heat can cause a malfunction of the Power supply and even some parts like Main board and inverter board.
And you can find a decent replacement of your power supply and other spare parts here in good price:
However,The stock of your Power supply is sold out now but you already have a new power supply now so its OK to wait until the stocks is available.

I hope this information will be helpful.Thank you for using FixYa.

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Lg tv problems ru44sz63d It turns on to a

Above are links for your service manual, and a training manual. This is a classic switchmode power supply, shutting down to avoid a fire, explosion, or both. This set had developed a problem, that is so severe that the set must be shut down, This set should be removed from the Power, and in my professional recommendation, you should get a "Quote" for repair, from, an Akai, Approved Service Center, this point is very important for a good result, Always contact, their local, "Head Office" Now, when you get the information you want, then you can decide as to repair of replacement. The reason we want an approved agent, is that way, all the engineers are trained on their own brand sets, they have seen almost all faults, and will get the job done quicker, and for less cost, and usually have parts on hand, also sometimes, there has been a service bulletin in issued and the repair may be subsided or even free.

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Blinking red lights

Call the manufacture of the TV set to find out who their authorized service is in your area.

These sets are expensive to service. They are serviced by mainly board replacement. There is very little support for component level service.

The boards use high density SMD technology, and is all uPC controled using firmware.

As for your fault, you would have to determine if the power supply is in the protect mode because of a defect on another board, or if the fault is the power supply only. This is usualy done by doing board swapping to find out which boards are defective.

Some of the manufactures will sell the service manuals for their flat panel sets. Not all the schematics will always be complete. The information is mainly for how to replace the boards, and do the factory level calibrations if necessary. You will need the proper calibration and diagnostic tools to do the tests and adjustments as indicated by the service manual.

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The fault is most likely in the power supply, or one of the other boards in the set has a fault condition that is causing the power supply to shut down. The only way to service the set is by doing board swaps to determine the defective board(s).

If you call DELL, they will tell you where to send the set for service.

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The MLT169A is a version number issued by MegaMeet in asia who built the supply. The correct part number for the SMPS for that unit is: E7802-005008 and unfortunately they are no longer available... However, there is some good news, those supplies can usually be rebuilt but you need to have the equipment, knowledge to make the repair...

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hi all,
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pioneer is not replacing the boards anymore.
check on
i did sold so many parts from this model.

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