Question about NEC PlasmaSync 42VP4D 42 in. HD-Ready Television

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42VP4D The power supply has gone out on my Monitor and I am looking for a store to buy either a new or refurbished Power supply for replacement. Any Ideas?

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Try to call the Company Tech Support and ask the part. Thats the perfect place to get your perfect parts. Or get your part number and search the web for inexpensive one but make sure you get the right one. Good luck

Posted on Aug 13, 2007


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My moniter is no light( 715b)

Check out the monitor power sources first like loosed A/C cords plugs in,dead plugs in outlets.Tried reset the monitor back to factory setting by unplug replug back in like an hour later.Non of these solutions works,than your monitor power supply board is dead that the board where the A/c plug into.Try website like to buy a new refurbish power supply board for the replacement.

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Hp monitor wont turn on.


First, remove the power cord from the wall, insert it into another outlet. Also, change the power cord, in case it is bad. Sometimes a bad power cord may not pass current into the monitor. But if problem persist, then it means the monitor is having a power problem.

The issue you describe is consistent with a power supply board issue. This is the board where the AC goes to. This problem may have occurred as a result of irregular power supply, or excess power supply or power surge.

The monitor is receiving current but cannot circulate or transfer the current to other necessary part of the monitor because of the defective power supply board. You might be lucky it's just a blow fuse. Also a defective transformer can cause your monitor not to power on.

All these can be checked on the power supply board.

But more often bad capacitors causes problem on the power supply board. I do not think the power board needs replacement, rather those defective capacitors is causing this issue. Open unit up and take a look at the power supply board.You will probably see one or more electrolytic filter capacitors that are bulged up in the top-not perfectly flat like the others.

The value of these capacitors will be different, most likely they will be somewhere around-820 to 2200uF/25 V( or /10V sometimes)

You can replace them with same values but I would recommend the voltage rating to be higher(like 35V for an original 25V) for reliability purposes.

What happens is,these bulged top capacitors will cause a low and unfiltered DC voltage=main board will malfunction(the relay will keep clicking until the caps are holding enough charge to bring the voltage up over a threshold point).

You can buy these capacitors at any Fry's or Radioshack store or you can order them online at vendors like ""(look for electrolytic capacitors). After replacing these capacitor(capacitors) most likely the normal operation will be restored. Or you can by a refurbished complete power board to save you some stress.

Note: There may be also some other causes for this symptom ,like a defective T con board ,or main board,but the bulged top capacitors are the most common cause for this issue.

If you don't know about monitor repairers, take the monitor to the nearest repairman to fix the fault for you. Also, note that monitor stores a lot of current, so wait a while before opening the monitor back cover.

I hope this helps.


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It looks like our Samsung LA32B450C4 needs hopefully only a new fuse. It's not readable anymore, so I don't want to buy the wrong fuse. No power but plugged in!

Can buy fuses it at any Radio Shack stores.The fuse it at the end of the power supply board.That the board,where the power a/c cord plug into it.Modern electronic equipments have very small chances the fuses dies in the normal operating situation of the devices.Tv have the power supply board problems.Tries websites like, to buy a whole refurbish power supply board for the replacement.

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Power light flashes hooked up a different monitor and it works fine sometimes if I unplug the soucrce and leave monitor plugged in it starts working

This problems it alway the tv power supply board have dying capacitors parts.That the board,where the power a/c cord plug into it.U have all the toools can do basic soldering and understanding basic electronic?Yes?Check the power supply board all over looking for dying capacitors it alway bulges or puffing up on it tops.By replacing all these dying capacitors that are bulges or puffing up on it tops.Will solved the problems.Or tries websites like, to buy a whole refurbish power supply board for the replacement.

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It is broken. Replace it.

If you look online for a "previously-owned" 15-inch LCD monitor, expect to pay $20 to $30.

If you go to any "big-box" electronics store, you can buy a 19-inch LCD monitor for under $100.

Either way, it's much less expensive to REPLACE it
than it would be for a professional TV/video technician to try to trouble-shoot and REPAIR it.

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I also have what appears to be a common problem with a Philips 42FD9954/17s: it doesn't want to turn on when it's cold. It wouldn't turn on last winter, worked fine all summer, and started malfunctioning...

All boards that sell online stores are refurbishes boards,not new boards.Find out ur tv make and model number.Look inside the board for the serial numbers on the board and buy the same board and install it.Just turn it on,no fine tuning require.Tries websites like, to buy a refurbish power supply board for the replacement.

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First check on the fuses in the panel, if bad replace with the same current rating, but if ptherwise Power supply board just die.It can be dead at anytimes.Tries websites, to buy a refurbish power supply board for the replacement.

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Where to buy pnt-426 or 3s110101

I had same problem.
Also check all 4.7 Ohm resistors for o/c R307/308/309/310 5Watt W/W.

Apr 04, 2008 | NEC PlasmaSync 42VP4D 42 in. HD-Ready...

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