Question about NEC PlasmaSync 42MP3 42 in. Television

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NEC Plasma Sync 42MP3 Problem

Hallo. Sorry for my english ! !
My monitor NEC 42MP3 not power on. When i try to power it, standby led flips red and green alternatively. Thanks and good year.

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3 Answers

Re: NEC Plasma Sync 42MP3 Problem - NEC PlasmaSync 42MP3 42 in. Television Flat Panel Televisions

Thanks, the 3 step procedure worked a treat!

Posted on May 05, 2008

Re: NEC Plasma Sync 42MP3 Problem

This happened to me and I found a posting that fixed it (at least for me). Follow these steps:

  1. Power off the system.
  2. Press & hold the Input Select button.
  3. Power on the system while holding the Input Select button.

Posted on Mar 01, 2008

Re: NEC Plasma Sync 42MP3 Problem

Hi, This model has some design flaws and yes NEC admitted to them a year ago. The problem with your monitor (hopefully) is a bad power supply. Have a Tech with a voltage tool check the boards as well as the connections Reason, this monitor generates a lot of heat ( no cooling fans) primarily at the power supply and sits there. So the wires tend to go weak by the heat build up. What the problem is the power is not going to the correct board in the right voltage. hope this helps out!!!

Posted on Jan 16, 2008

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1 Answer

Nec plasma sync 42mp3 doesnt have wall antenna connection point. simple coaxial connetion.

It does not have TV tuner, it is just a display for Video source, you will need Tuner box.
Read about it here:

Please leave rating if it helps.

Mar 06, 2011 | NEC Flat Panel Televisions

1 Answer

I have a Nec Plasma Sync 42vp4g/s Monitor. I have connected only a video RCA on VIDEO 2, but the monitor is turning to black ( the stand-by light is still green ). Sometimes it makes some flashing showing...

Your video input on VIDEO 2 via the RCA jack is most likely composite analog signal (good old
obsolete NTSC), and the Television may be in High-Def mode, therefore not looking for, and
not understanding anything but an HDTV (digital, ATSC) signal.

58-page users manual (language=english) for your television:

Jan 26, 2011 | NEC PlasmaSync 42VP4D 42 in. HD-Ready...

1 Answer

Red LED lights

power supply shot ... sometimes x board or y board

Oct 02, 2009 | Pioneer PureVision PDP-5030HD 50 in....

1 Answer


Its NOT a TV, its a display. It does not have its own TV tuner or RF converter. You have to runit from a VCR, A DIgibox or SKY TV.

Jul 27, 2008 | NEC PlasmaSync 42MP3 42 in. Television

1 Answer

My tv urgent

Hi - first check that all the fans are rotating - the set will shut down if they are not.
***** WARNING potentially FATAL voltages (up to 400V DC) exist on the PSU boards - if you don't know exactly what you are doing don't ! *******
Unfortunatly the fault could be on a) PSU b) CPU board, as this monitors the PSU voltages and will shut down the set if the measured voltages are wrong c) plasma drive circuits - if these are drawing excessive current, or someother fault exists the fault feedback signal to the CPU board will activate and the set will again shut off.
Check the PSU voltages, the standby power must be OK otherwise the set wouldn't work at all !. The +5V switches on first followed by the +70V and +170V (about 1-2 secs delay.)

If the 70 and 170 dont come up try removing (with the power DISCONNECTED) the two large double row connectors on the PSU board near the 70/170 V test points - these supply the plasma drive circuits - the set will still switch off as there is a fault feedback line from the drivers, but it should stay on long enough to check the voltages.

Feb 07, 2008 | NEC PlasmaSync 42MP3 42 in. Television

1 Answer


According to the manual for "POWER/STANDBY indicator is blinking in red":
  • "The temperature inside the main unit has become too high and has activated the protector."
  • "Promptly switch off the power of the main unit ans wait until the internal temperature drops."
  • "If the monitor becomes too hot, the overheat protector will be activated and the monitor will be turned off. If this happens, turn off the power to the monitor and unplug the power cord. If the room where the monitor is installed is particularly hot, move the monitor to a cooler location and wait for the monitor to cool for 60 minutes."

Feb 04, 2008 | NEC PlasmaSync 42MP3 42 in. Television

1 Answer

Nec 42'' plasma

Try holding down the 'INPUT SELECT' button, then press the power button on, on the tv at the same time.

Oct 29, 2007 | NEC PlasmaSync 42MP3 42 in. Television

2 Answers

NEC plasma television

hi jubbi, actually i'm not sure your problem you describe. So you can go to this link see your plasma tv problem is it inside this guide?

Aug 31, 2007 | NEC PlasmaSync 42MP3 42 in. Television

1 Answer

Blank Screen

Hi Gemma - have a look at this forum - it may be similar to what you are experiencing. Things don't look good for NEC owners I must say! Good luck Saty.

Dec 28, 2006 | NEC PlasmaSync 42MP3 42 in. Television

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