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

http://www.shopjimmy.com/sony-1-474-218-11-power-supply.htm

Out of stock but you know what to look for unless you want to go component level repairs.

It sounds like the problem is in the power supply board (75012667 / PE0626C / V28A00084501). There is a repair service available for this board at http://www.coppelltvrepair.com/p/749/pe0626c-toshiba-75012667-power-supply-board-repair-service-dead-tv-or-dark-flashing-display. You may also want to check their blog for more information, or contact them.

Hello
The fault of your tV is with its power supply section. There is a power regulator board inside, which converts the AC power we give to lower DC voltages, which in turn used to supply different sections of other boards. With a dead set, it will be difficult to say which part of it has damaged. You must ahve thorough knoledge in elelctronics, and experience in servicing switching type power supplies [SMPS] boards. In most cases the power supply is replaced with an other one as card basis, becuse, most of the components it it are very difficult to get from open electronic spare part market. You can get this board, from the authorised service center for RCA at your town. If you have enough knowledge and confidence, go forward, and check the power retulator board for faulty components, and replace them if they are available. If not, get this set repaired, either by the authorised service center for RCA at your town, of by any well experienced service technician. OK.

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:
http://www.electronica-usa.com/Merchant2/merchant.mvc?Screen=PROD&Store_Code=EU&Product_Code=DPS247APB&Category_Code=
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.

Those are "non-serviceable", therefore no circuit diagrams are available.

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.


Jerry G.

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.

Jerry G.

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...
Bill

hi all,
this problem lis the power supply board. be aware that pioneer pdp-502mxe has got 3 versions and all 3 power supply boards are different so before ordering a new or reconditioned one check the part number on the power board itself.
pioneer is not replacing the boards anymore.
check on ebay.co.uk
i did sold so many parts from this model.
thanks