My 22inch ViewSonic monitor comes on, but will only stay on for a few seconds and then goes off. The power indicator light stays blue. I turn the monitor off and then back on and it will stay on for a few seconds and then goes blank again. HELP!
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Re: 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.
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I guessing that when you say "goes off" you mean it goes into power-saving mode?
Assuming that you're working on the computer at the time (so it's not actually going to power saving mode from inactivity), this might indicate one of two things:
a) the VGA cable to the computer is not in a good contact with the monitor. This might happen if you haven't used the screws to fix it in place, just try to plug it fully in on both ends (computer and monitor). If the monitor sees to VGA signal, it goes into power saving mode automatically.
b) there's a problem with the monitor that builds up after a few minutes. When you turn it off, it "cools down" and can be used again. If that's the case, you should take it to a dealer's shop and have it checked (or replaced if it's still under warranty).
This sounds like the power inverter is failed.. It's what pumps up the power for the light in the monitor.
You could try unplug the sound bar from the back of monitor if you have the sound bar installed. Just a maybe..
To fix the inverter (replace) is usually better to buy newmonitor unless you do it your self.
The defective LCD Backlight inverter will cause the following symptoms:
No Display, but Power Indicate light stay on green (Or Blue).
Screen flash on and off and the power indicate light stays on green (or Blue).
Very typical of View Sonic. Sounds like a back backlight or inverter. I would go to www.viewsonic.com and open up a RMA. Most view sonic screens have a 3 year warranty. They will repair at no cost ..(if it is within that period) There is a date code on the back of the screen that will help you validate the above information.
This happened to me and I was able to fix it. I cracked it opened and found a bad capacitor, bought a replacement at Radio Shack and I'm back in business. Actually using it right now to post this.
Monitor going black after a few seconds can be caused by a faulty power supply or inverter. Some monitors have both as one unit.
Sometimes it is basic failed capacitors, After that then I would look at transistors.
The average monitor from 17 to 20 and sometimes the 22s have usually 4
bulbs in them. One bad bulb will also cause the inverter to not fire up.
Bad bulbs usually show pinkish tint, or flickering or are dark at center top or bottom of the display.
This is a common problem with LCD monitors after a few years of use. The capacitors in the power supply board start to fail and this prevents the monitor from starting up correctly. Sometimes you get a picture and then it goes black. On some units you can keep pressing the power button and after several power up cycles the monitor will work until you turn if off. These symptoms are all common with capacitor failure. The monitors are well out of warranty now so Viewsonic will not cover the repair cost. But the repair is very easy to do yourself. You just have to replace the 6 power filter capacitors on the power supply board. Here is a link to additional information on this repair.