Kogi L7CH Monitor Logo

Related Topics:

Question about Kogi L7CH Monitor

1 Answer

Possible_backlight_issue my monitor works , but won't stay lit. cause everytime i toggle the monitor off and on, it seems like the backlight blacks out 2 seconds after it's on. but i can see windows running in the background,so it is functional.

Posted by ron black on

  • mylesgarber Feb 08, 2008

    I have the L4BX kogi and yes the lcd screen is very dark I can see an image when I put a light on the screen . OK i know its the blubs?" i hope but who fixes this . who do I send it to?

    thanks Myles Garber

  • Anonymous Mar 04, 2008

    I've got the EXACT same problem; when I cu it on about 2 seconds later the screen blacks out and if I toggle it off/on it relights but goes out again 2 seconds later ... shining a flashlight on the screen at an angle shows it's got my page there.

×

Ad

1 Answer

Anonymous

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    MVP:

    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.

    Governor:

    An expert whose answer got voted for 20 times.

  • Expert
  • 47 Answers

Hi goldeneye, Sounds like the backlight inverter board. Don't mind the explaination I just cut and paste this solution from one of my others. It's a very common problem. LCD's use four small Cold Compact Fluorescent bulbs to back light the display. (thats what gives the LCD it's brightness allowing you to see it) The inverter board runs these lights and when they go bad they will typically show symptoms like you have or the monitor power light comes on and you have either no display or a very dim display. If you ever have one that has no display but the power light is on you can check by shining a flashlight directly into the LCD from the front (right into the screen) if you can see an image then it's either the inverter board (most likely) or the CCFL bulbs have gone bad. The inverter board and CCFL's are replaceable. Good Luck, El Duderino

Posted on Nov 26, 2006

Ad

Add Your Answer

×

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

0helpful
1answer

Dell st2410b monitor won't stay lit

Ok, same issue here as well. Monitor would come on for 1/2 second and then the backlighting will go off. It's next to impossible to tell, but if you shine a bright flashlight at the screen, you can make out the video signal/desktop.

I have now replaced all the Capacitors except the very large one (didn't come with the kit that was available.) None of my caps looked bad (bulging) including the large one. Unfortunately, I still habe the same issue

So my question is....large capacitor replacement or something else?
1helpful
1answer

HP LE1901W won't stay lit up

usually with lcds, this can be caused by a bad inverter or power supply
0helpful
1answer

I have a ViewSonic VX910 Monitor that hasn't been working. I bought the monitor at a thrift shop wishing to repair it after fixing 3 other monitors now. The monitor turns on fine, will sleep,...

There should be no liquid coming out from the cap at all. Is it the one that has 250~350vdc rating on it? The one in my pix has very small leak coming out, you can barely see it.
See pix here; http://s807.photobucket.com/albums/yy352/budm/VIEWSONIC/Viewsonic%20VX710_910/?action=view&current=DSC00865.jpg

http://s807.photobucket.com/albums/yy352/budm/VIEWSONIC/Viewsonic%20VX710_910/
It should have about 160vdc on this cap, be carefull, this is the HOT (LINE) side of the AC primary circuits!

Basic LCD monitor and TV troubleshooting guide:
http://www.fixya.com/support/r6150077-basic_lcd_monitors_troubleshooting
http://www.fixya.com/support/r5093881-lcd_flat_panel_tv_troubleshooting_guide
http://www.fixya.com/support/r7406380-tv_training_manuals
Failed TV and Monitors pictures: http://s807.photobucket.com/albums/yy352/budm/

Learn about bad caps: http://en.wikipedia.org/wiki/Capacitor_plague
Parts: www.shopjimmy.com
Parts: http://interliquidparts.com/

Capacitors kit: http://lcdalternatives.auctivacommerce.com/ he can make you a set of caps for you.

Or www.digikey.com just make sure to use caps with low ESR, 105c, high ripple current, long life rating such as PANASONIC FM or FC series.

0helpful
1answer

Monitor screen will not stay lit. It will only stay lit for a second then goes black.rq

The problem can be caused by bad caps in the power supply, bad inverter backlights circuits, bad lamps. Look for bad caps first, then post back what you find so we can guide you further, see example of failed monitors due to bad caps here: http://s807.photobucket.com/home/budm/allalbums
2helpful
2answers

SyncMaster 930B takes 20 minutes at least to become visable

IT SHOWS THAT THE PROBLEM IS IN THE POWER SUPPLY SECTION OF THE LCD. CHANGE THE CAPACITORS PLACED IN THE POWER SUPPLY SECTION. IT WILL WORK.
DONT FORGET TO VOTE.
0helpful
1answer

Displaying issue

Hi,,,there,
That's indicated your backlight inverter are busted. Need to replaced a new one or repaired it. To repaired look for a bad capacitors with a bulged on top of each caps. Not sure, just replaced all the caps... Have a nice weekend!
4helpful
2answers

Monitor won't light up. Only just for a second or two.

Hi
this issue is made by defective torch or lamp at the back of LCD...

Thanks!
0helpful
2answers

Dell inspiron 1150 laptop black screen

Can you hear the Windows startup noises but can't hear it?

Does it work plugged into an external monitor? (Any good CRT or flat screen should work.


Be sure to plug in the screen before you turn it on.
If it doesnt output to the LCD automatically you may have to hit FN-F8 to switch to external.

If it works on external monitor you are just dealing with a screen problem of some sort - either a bad inverter or backlight in the LCD most commonly...

Let us know.
0helpful
1answer

Black screen

Try pressing the 3rd button, as it toggles the Analog or Digital inputs...
Not finding what you are looking for?

140 views

Ask a Question

Usually answered in minutes!

Top Kogi Computers & Internet Experts

Marvin
Marvin

Level 3 Expert

85240 Answers

Brad Brown

Level 3 Expert

19107 Answers

Cindy Wells

Level 3 Expert

6493 Answers

Are you a Kogi Computer and Internet Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...