NEC Plamsa sync 61MP1 (model PX-61XM1G). Wont power on, Small green standby light comes on but main unit wont power up.

SOURCE: 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!!!

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.

SOURCE: can I connect 100-240V displayed

Yes.. has a auto switch power suppy.

SOURCE: where is the ysus board located on a nec plasma

The board is located on the extreme-right at the center of the chassis. In some sets I have seen the Y-sus on the left and the Z-sus on the right. If you can get me the part number off the board I can confirm if that is the board