Question about NEC AccuSync 120 CRT 21" Monitor

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Help me with ma monitor

My monitors power is dead,i mean it the power led does not come on at all

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Being a 21" CRT monitor (old tube type) it is going to be cheaper to buy a new LCD flat screen than to fix this one. Best bet if you do want to fix this, is to take it to a tv repair shop and let them work on it. You have not given enough information to give a good educated response to what might be causing this issue. Good luck.

Posted on Aug 20, 2007

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Posted on Jan 02, 2017

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Samsung syncmaster 920nw 19 goes black after 2 seconds and power led is on


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Its due to bad power supply. open your Led and remove old bad capaster and replace with new with same value. hare is link you can follow. http://www.youtube.com/watch?v=y1VbrAYc-d8

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If you hear the CPU fan turn on that doesn't mean the CPU itself is working. It can be only that the motherboard is getting power. Check all your connections such as monitor and peripherals and re-connect them. If you still don't get P.O.S.T. or ANY letters or boot options on your screen then your CPU is dead. (unless your monitor is bad)
Another easy diagnostic is using your ears. For example the pitch sound of the fan in some motherboards tends to lower and then increase because it's reading of the hard drive. This means your CPU is ok but either your graphics connection is bad or your monitor is.

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That means your monitor has faulty or dead capacitors. The capacitors in your monitor work to hold down power from the source long enough for proper display on the screen. Bulged or leaking capacitors will only hold power for about 2 - 8 seconds and the looses it. The only solution is to replace those fault capacitors with new ones. Get a computer technician to open up the monitor and change the capacitors. That is the only technical problem you asked to know. Good luck

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Hello.

The LED blinking light usually means that the attached PC is not powered on or the VGA connector (end of cable connected from the monitor to the PC) on the monitor, the cable or the VGA port on the PC is faulty.

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Hope this helps.

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Flashing power LED light means you may have shorted (Emitter to Collector) out transistors (c5707) or bad fuse (fuse has high resistance) PF751. Those are what you need to check. see pictures here: http://s807.photobucket.com/albums/yy352/budm/Dell%20E173FPb/

http://s807.photobucket.com/albums/yy352/budm/Dell%20E15x%2017x%20series%20PWR%20INVERTER%20BD/

Post back what what you find so we can guide you further.

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Samsung syncmaster 171v. It may have experienced a power serge. It will not power up, no signs of life (no leds lit). Is there a fuse in the chassis? Is there a reset on the monitor? Thank you for the...


Very Interesting. I have the same monitor. No problems for the 3 or 4 years that I've had it and last week I got the same issue. Came in and my monitor was dead, doesn't power up.

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It could be your power supply, your monitor, your graphics card or a software problem.
Try to reinstall your graphics card drivers, if that doesnt help try another monitor.
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Doesn't respond


Compaq MV 540 (old dog monitors) DEAD 100% DEAD.
OSD dead too. it seems.
built in year 2000, its 17 years old, and you fix things that old
why> why do that, used LCD can be had for 20 bucks.
why slave over any relic CRT like this,,, for a musiem??
using the VGA cable
the monitor will go to sleep, lacking any PC sync lines Vert/horz
by design per VESA rules on that !
step one , use a PC.
set the PC up to do the max resolution on the CRT
some PC cant do that, (new PC)
im reading your users guide now, 1sec, google , hit.
first force the PC to 1024x768 resolution and 60 vert. refresh max.
now the CRT can work an not any of above number higher .
see? use working monitor to do that FIRST.

now plug in the vga,cable last. on the monitor under test.


power led means
green = power ok
amber or yellow are sleep or standby.
so that means, there is no sync.
or if the OSD works (does it>) turn the silly sleep timer off in the monitor. via OSD .

the operators guide, tells you to go to PC safe mode.
this mode sets reso real low. 800x600 and all monitors work there.
no sleep timer inside monitor i can find.,

lots of ways for any CRT to fail even the CRT itself
(loss of sweep)
loss of cathode video drive
the VGA card inside, can fail. killing dead all cathod drive.
the power supplies or regs inside can fail.
the HV can fail. 10,000 volts (dont touch it if long life is good)
some survive, or fly back hit head on wall and crush skull,
seen it and done it so,,, there you go.(ripped gash in arm once)
the 2nd anode is very high voltage, avoid it, and win,.
respect it.

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8 Answers

Repair


if the monitor green led is blinking continuosly the follow the steps remove the cable of the monitor which is connected to the CPU and watch the monitor it should show a message ( no input signal or cable disconnected, that means your monitor is OK the problem is with your CPU . try this and let me know

Oct 10, 2007 | Computers & Internet

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