Question about ViewSonic Vx2250wmled LCD Monitor
Power buttton color goes from blue when turned on to amber like it is in sleep mode but stays on amber even when in use and the screen periodocally goes from normal to a few seconds of black screen then back to on.
Posted by Anonymous on
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Posted on Jan 02, 2017
SOURCE: Problem with monitor
Are you able to see a slight image on it at dusk and maybe with the help of a flashlight. since your blue light stays on the video board, may be okay.
It sounds like you have bad capacitors on your powerboard or possibly a burned out transistor on the inverter.
Only way to really tell is to open it up.
If you unplug the screen to video board ribbon, you may notice a different effect in the screen lighting.
There is a chance one of your bulbs is creating a problem
Should the screen happen to light up all white, then your power board and inverter are okay and the problem may be in the video board.
If it looks pinkish or dark or flickers then the bulbs or a bulb may be the issue.
If it flashes on then goes off, it's in the power or inverter board.
Posted on Oct 12, 2008
Your monitors backlight is shutting off due to a failed component. The inverter circuit which drives the high current CCFL backlights, has a feedback design so that if there are any problems with the devices along the high current path, the high current will shut off. This way if something got shorted out, it would not sustain or cause any great harm. This is a great feature if you are the "short" in the circuit.
So in actuallity, your monitor is still on, and it's still showing you a picture. You just can't really see it because the light from behind has turned off. If you take a flashlight and put it up close to the screen, you'll see your desktop again!
As to what is causing this, It can be several things.
-A broken or burnt out CCFL
-A bad capacitor in the power supply filter or on the inverter.
-A shorted out IC.
-A mouse has crawled inside your LCD and chewed the CCFL wires. (this usually is accompanied with a high pitched squeeling sound, and/or smoke)
You can send me the entire monitor and I will repair it for $40. You pay shipping costs BOTH ways. Let me know if you're interested and I'll provide you with more information on where to send it.
Posted on Apr 03, 2009
It sounds like you have a monitor with a common problem. After a few years some LCD monitors will blow a power supply. The problem is caused by parts called capacitors overheating in the confined space of the monitor. If you are good at electronics repair/soldering you can usually fix the problem. Check out a few pictures on my web site www.ccl-la.com/badcaps.htm You can take the back cover off your monitor and look for the bad parts,replace any that look like the pictures and your monitor should work fine. The capacitors do need to be installed with the correct + and - connections, note the stripe on the old one and insert the new one the same way. If you don't want to try the repair yourself we offer a repair service for $35 plus shipping.
I hope this helps, if so please rate my solution.
Over 21 years of computer and printer support/repair
Posted on Jul 22, 2009
The high pitch sound is coming from the inverter. It is faulty and needs to be repaired or replaced. The inverter supplies high voltage to the CCFL lamp, this lamp gives the backlight to the LCD so you can see the LCD images.
Check out LCD parts for parts, service and DIY info. use this link :-
Posted on Aug 30, 2009
Bad caps in the power supply, common problems. See examples here: http://s807.photobucket.com/albums/yy352/budm/Viewsonic%20V912B/
Posted on Jan 07, 2010
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