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NEC Accusync PV46 turns on then goes black in seconds. Green light still on.

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6ya6ya
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Posted on Jan 02, 2017

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SOURCE: What is the fix to a TV - AccuSync PV46 that gets hot and turns off within about 5 or 10 mins.

open your monitor in on condition and see which component geting hot ok change component with new one and check it aain

Posted on May 19, 2012

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Sean80000
  • 1867 Answers

SOURCE: My Lcd monitor goes black when i turn it on. NEC AccuSync lcd72vx

Sorry the unit is dead and you will need to replace it. I would avoid NEC on the next purchase.

Posted on Nov 12, 2015

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1 Answer

My Lcd monitor goes black when i turn it on. NEC AccuSync lcd72vx


Sorry the unit is dead and you will need to replace it. I would avoid NEC on the next purchase.

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Tv has blue & black line on screen


If you wish to get some details; check the site linked here. Pull up older posts.Surf the site with patience.http://electronicshelponline.blogspot.com/
Line, faults & possible causes to LCD screen are given with illustrations.

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What is the fix to a TV - AccuSync PV46 that gets hot and turns off within about 5 or 10 mins.


open your monitor in on condition and see which component geting hot ok change component with new one and check it aain

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Screen goes blank after a few seconds


Hi ,
The monitor flicker problem. The monitor when turn on will display image for couple of second then turn black. The monitor status led is still green. This will happen each time it is turn on. The symptom at appear to come from the inverter board.

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No picture; power LED blinking amber/green 2-2-2-2...


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Apr 24, 2008 | NEC AccuSync 120 (White) 21" CRT Monitor

1 Answer

NEC AccuSync 120 Frequency setting


This is the maximum resolution for this monitor:
1600 x 1200 / 76 Hz

Even if you lower the resolution to the monitor, as I can see that you want to do, the maximum refresh rate is still going to be 76 Hz. If you were able to force the monitor to scan a greater field rate and its protection circuits do not shut it down, the monitor will be damaged.

Your display card is most likely limited also, unless you went out and bought a very high end card.

When using a different resolution that what the specs on the monitor indicates as its native mode, this will reduce the quality of the results displayed.

Specs for this monitor:
http://www.superwarehouse.com/NEC_AccuSync_120-BK_Black_21_CRT_Monitor/AS120-BK/ps/120193


Jerry G.



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3 Answers

NEC Monitor LCD1700V


I had a similar problem with a NEC LCD1935, and I traced it to the inverter board which was a Lien Chang LI-2190 ... it seems that common problems with this type of board are bad solder joints due to the temp. cycling, or blown capacitors, but I was too lazy to resolder everything so I just disconnected the BL signal line that goes between the main board and the inverter board, and this solved the problem. In my display it was a green line, marked BL on the inverter board -- I removed it from the connector and just taped it off.  I'm guessing that this is a blanking signal that the invertor uses to signal to the main board there is an overcurrent situation and that the display should be blanked/shutdown.
I'm certain that there are still problems with the inverter and it might go again, but at least I have a working monitor for the time being.
Caveat emptor.

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1 Answer

Nec flat screen goes blank after 20 seconds


i got the same prob.supposedly its the cap(capacitor) ,the one for the power suppy near the cord input.im getting my shit fixxed.and i will let you know.

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