Mag LT916s brghtness, contrst, phase off,, monitor stays on!

It could be two things. 1). The video card is set to a resolution the monitor does not support. 2). The monitor's power supply is bad. You can try to boot into rescue (or "safe") mode, and adjust the video card to a resolution the monitor supports. OR, power supplies usually go bad because capacitors bulge or otherwise go bad. Most monitor power supplies are hard to get, so people typically repair them. If you disassemble the monitor shell, you can see the power supply (where the AC cord goes). You can look at the metallic, cylindrical looking things with minus signs down one side, and if they look bulged on top, you can replace them. You can get replacements at mouser.com.

if the power indicator is on will mean either a fault with the back lights or the inverter circuit that controls them will need to be checked by tech

you have a power supply problem you will need to open the case and look for hot spots on the pcbs or blown capacitors

The problem is with your Harddisk. Try removing and reconnecting it again. Run the scan disk utility.

It is most likely that the filter capacitors on the power inverter board have failed. I took mine apart and found seven swollen capacitors on the this board, they fail prematurely and seem to be the only thing wrong with the unit. I replaced them and now it is working just fine.

six 470uf 25v electrolytic capacitors and one 220uf 25v Capacitor.

you should not attempt to repair this yourself unless you have some electronics training since there is a shock hazzard involved and also these capacitors will blow apart if they are installed incorrectly (very messy experience).

Hi...there,
It's seems you need to replaced a new backlight inverter. Check this site out...@ www.3rd-rocks.com
maybe have what you needed... Have a nice day!

Your first step in troubleshooting this problem is to plug in another monitor to your computer. If you are having the same problem it is related to your computer. If the second monitor works fine then your original monitor is shot.

Hi...there,
All you guys need a new backlight inverter... Your old inverter are busted!

Sounds like an inverter problem. If the power supply is internal replace the capacitors coming out of the voltage regulators. These are usually 1000mf and/or 470mf. If that doesn't do the trick look up the numbers on the 8-pin chips that drive the secondary transformers on the inverter to see if they are getting the right voltages.
Good Luck!

The problem with the Mag lt916s is that it is made with cheap capacitors. If you are interesnted it is a cheap and easy fix. Open it up, which is the hardest part. And replace the six 470uf 105 degree 25v capacitors and maybe even the smaller 220uf one next to them. You will see a bump on the top of bad capacitors most of the time. There are some videos to watch on Youtube showing you how to make the repair.
Good luck