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My monitor would turn on for a few seconds, then go dark but the green light would stay on. (i could see the screen if i added a light source) which means the backlight is out so i opened it up down to the boards to find that a little blue capasitor was completely burned out. it was the one next to the power input. (there are two and it is farthest away). i just need to know the specs on that capasitor or what voltage it is...something, any advice would help. thanks in advance
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If the capacitors in the power supply are bulging that indicates that they have failed internally and need to be replaced. That would cause the back light inverter to shut down just like you are having.Replace the capacitors and you should be good to go.
Sounds like either there is a bad connection from the computer to the monitor, or the monitor has a faulty power regulator, causing the monitor to overheat prematurely, and shut off.
i have the same problem. i just replace the power board because of the "green blinking" light. now, light stays green, picture comes on for a few seconds, then blank....
I will assume that you have checked out the power cables and external cables. If this is the case you will usually notice an indicator light from your monitor. Universally it is yellow or orange when it has power, then turns green when it detects input from your computer. If the Led light doesn't turn green even when your laptop is already booted, your culprits would be your iMac's video controller or your monitor's input cables.
Try hooking up a known good working monitor to the computer and see if the monitor turns on and stays on with video.
If it does then you know there is a definite problem with the Sony monitor. Next step would be to open up the monitor and see if you can find any burnt components or any puffy capacitors, instead of a flat top they will have a top that is puffy like its expanded, that means those capacitors are bad. If you run into that, then that means you need to replace those, just make sure you get capacitors with the same UF rating and the voltage can be the same or higher.
You'll need some soldering skills to remove the bad caps and put in the right ones, they can only go in one way cause the dark strip has to match up to the dark strip on the capacitor.
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.
ebays bammbammfran
well i just had this problem this morning i woke up turned on the monitor and it came on but went out. but i soon found out it was not the display that is not coming on its the black light. if you look closely you can see the display but there is no light to light it up so you can see. it doesent seem to be anything wrong with the circuit board just the black light i am going to be taking the monitor apart to see if there is anything me or any of you can do for the monitor to fix it.
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