20 Most Recent Mag Innovision 19" LCD Flat-Panel Monitor LT916S Questions & Answers

possible failure of the backlight inverter

Mag Innovision... • Answered on Sep 12, 2013

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.

Mag Innovision... • Answered on Mar 30, 2013

The lamps has nothing to do with it... what you need a new backlight inverter or repaired it by replaced a couples of bad capacitors... Sound easy... right! Not so... It's not always the caps problems.

Mag Innovision... • Answered on Jul 20, 2012


These monitors use an external power adapter that plugs into the VGA plug. Look at the the VGA plug that goes to the computer, it has a small round power socket on the back of the plug. Here is a link to a power adapter that will work with the unit.


I hope this helps, if so please rate my solution.


Mag Innovision... • Answered on Sep 18, 2011

Sounds like a silly question but have you checked the fuse? If it isn't that then it sounds like a problem with the power board. Check it for burn marks and bulging electrolytic capacitors (they're the little round tube like things that stick up), also check any fuses on the board. If it's the caps or a fuse then just replace them, if something else is burnt out then you'd have to replace the board but you might not be able to find a replacement since it's old.

Mag Innovision... • Answered on Feb 17, 2011

If you don't have one, don't needed. Just replaced the backlight inverter...

Mag Innovision... • Answered on Oct 21, 2010

you must remove the housing to check with a ohm meter to see if the switch is any good
The switched plastic tab could also be broken off instead & once its removed you can see that plainly

Mag Innovision... • Answered on Aug 19, 2010

That is capacitors problem, I would change all the caps in the 5v and 12v power supply section, you can have bad caps with high ESR. Also look at the caps on the logic board. I use hair dryer for troubleshooting to locate bad caps.

Mag Innovision... • Answered on Apr 18, 2010

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

Mag Innovision... • Answered on Jan 05, 2010

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

Mag Innovision... • Answered on Oct 11, 2009

Hi this is the way how to examine what's wrong with your monitors. After you turned it on and the screen went black, you have to check that if you can see the image on the screen or not by shining a flashlight into the screen, not directly but find the best angle to the screen and take a look very closely. If you can see the icons or any image, there will be a minor problem. This is because of the lamps inside screen. Some of them were broken and it is very easy to replace. If you cannot see anything on the screen, there'll be some problems with inverter board. If you have soldering tool and want to fix it by yourself, check the caps first. It may cause this problem. Some caps might show leaking or burn spot on the board because of too high temp. If you don't have soldering tool, you better go get a technician to do so. Hope this help!! If anything I can help you with, feel free to let me know.
Thank you,

Mag Innovision... • Answered on Sep 22, 2009

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

Mag Innovision... • Answered on Jun 19, 2009

moz-screenshot.jpgHello Chris,

You have a monitor with a common problem. After a few years some LCD monitors will blown a power supply. The problem is caused by parts called capacitors overheating in the confined space of he monitor. If you are good at electronics repair/soldering you can usually fix he 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 pictues and your monitor should work fine. If you don't want to try the repair yourself we offer a repair service for $35 plus shipping. I hope this helps, iff so please rate my solution.

Corporate Computer
Over 21 years of computer and printer support/repair

Mag Innovision... • Answered on Jun 19, 2009

INstall the correct Video graphic card driver. The driver CD must have been shipped with the Monitor. Just put that CD in, and follow the on screen instructions.

Mag Innovision... • Answered on Mar 28, 2009

Well, you need replaced a new backlight inverter. if you got a AC Adapter with this monitor. The backlight inverter it to your left a small rectangle piece. Monitor without AC Adapter, the inverter it to your right... it's a large piece of power supply w/ buit-in inverter. OK! Wanna repaired it yourself...
First of all, inspecting the inverter closely...if you're lucky you can see a over-heated capicators with a bulged caps on top. Those caps need to be replaced. if you're not sure....just replaced all the caps.
Good lucks! Have a nice day!

Mag Innovision... • Answered on Feb 17, 2009

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).

Mag Innovision... • Answered on Feb 17, 2009

If the power supply is not wqrking then it is the invertor unit that has dies.
Replace the monitor is the best advice- If it that recent out of warranty may be worth contacting 'viewsonic to see if they will discount you one.

Mag Innovision... • Answered on Feb 15, 2009

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