Question about NEC PlasmaSync 42MP3 42 in. Television
Hi, I read your notes on the power supply problem with the above model. I am having the same issue with my unit and I am wondering what part should I be changing. Can you please help. - Uma
SOURCE: NEC PX-42VP4G Power supply
Check to be sure that there is no voltage on the input line. You don't indicate what input you are using. Since the set appears to work without an input connected, try looking at the input cable. Also, if the problem is internal to the set, shorting the input jack would cause the same behavior. Please update this with what you find.
Posted on May 13, 2008
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Posted on Nov 07, 2008
SOURCE: power supply issues
hi there, i recommend replacing the entire board. once you have a short like this, the micro board itself will become useless. the thin micro circuitry has become separated within the layers, preventing a closed current transfer. its best to order a new canvas so to speak.
Posted on Mar 11, 2009
SOURCE: NEC PX-42VM3A 42" Power problem
I have read that this has been fixed with little more than a hard reset. This means just unplug your set for 10 minutes or so and let all the power seep out of the boards and capacitors, then plug it back it.
If that didn't fix it, your unit needs servicing. If you are handy here are some troubleshooting steps:
Check the fuse at Y-Sustainer pcb.
If blown do not replace. Look instead at scan converter boards. They are connected between y-sus & plugs from display (left side with face down, back open). Look for signs of 'burning' at upper and lower long boards. If any imperfections are found, replace all three boards: Y-sus, up & low scan.
If fuse was okay, check power supply for bloated capacitors (big board in middle of set).
I hope that helps.
Posted on Apr 19, 2010
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