Question about Dell ST2410 Monitor

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Dell Model 2410b monitor very dim, suspect inverter

When the monitor is connected to a computer and initially turned on, it displays normal brightness for about 1 second, then the image dims to just barely visible. The brightness and contrast are set to maximum. Suspect the inverter. Advice?

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6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

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El Duderino
  • 47 Answers

SOURCE: Monitor goes blank

Sounds like the back light inverter board is bad. 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 16, 2006

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SOURCE: MODEL DELL 1504 FP

I have one with no backlight. The capacitors on the board are bulging. In my opinion they were designed too close to tolerance and "cooked out". As long as it's still working change the ones in the Regulator circuit(3 in the middle of the heatsink area), and the four really small ones over by the transformers. Should be right as rain.

Posted on Oct 19, 2008

  • 1572 Answers

SOURCE: Dell E152 Flat Panel screen is REALLY dim.

I haven't seen this particular monitor. It may have deeply recessed black screws, or possibly even Torx screws. Try a #2 Phillips and see if it engages firmly. If not, try a T-10. Once you get inside, you will need to remove the power supply and main board to get at the LCD panel. Locate the inverter circuit - it will have two Teflon insulated wires going to (usually) the bottom corners of the panel. It may be part of the power supply board. Every LCD display I've seen so far uses pink colored insulation on those wires. It is possible that the inverter has failed, but most of the time, it's the fluorescent tubes inside the back of the panel.

Getting at the tubes without breaking something is not a trivial task. You will most likely need a #00 Phillips screw to remove the shield metal. Observe anti-static precautions from the moment you open the monitor. Be patient, and keep track of every part or connection you remove. Do not remove the LCD driver circuitry (generally at the top) from the panel. The tube(s) are usually at bottom, enclosed in a sheet metal reflector held in place by the bottom section of the thin metal frame around the panel, just inside a flexible white plastic sheet that covers most of the back of the panel.

You can get new backlight fluorescent tubes from www.lcdparts.com. This website has links to some very helpful pages on repairing LCDs. Note: replacing the tubes involves some rather delicate work. If you are nervous, twitchy or clumsy with fine work, you'd be better off to hire out the job. Be very careful not to rip the rubber insulators on the ends of the tubes when you slide them down the insulated wires to expose the connections to the tubes. You have to attach the wires at just the right spot or you won't be able to fit the insulators back on and get the new tubes to go into the LCD frame - and you can't apply heat to the wires for more than 4 seconds at a time. I've done a number of them successfully, but have occasionally had to try several times to make the connection sufficiently small and short.

Posted on Dec 18, 2008

budmrtn
  • 11361 Answers

SOURCE: I just got a LCD monitor (not new) and it turns on

You have bad transistors (C5706/5707) in th inverter circuits, common problem with this model.

Posted on Dec 19, 2009

techresolve
  • 109 Answers

SOURCE: the monitor gets dim as sson as it turns on. it

it has loose connection inside particularly at the bottom of the body you have to call tecnician to get it fixed

Thanks

Posted on Feb 03, 2010

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I have lenovo g550...my screen flickers in every 5minutes...


Failing Inverter An inverter, typically found inside a laptop computer, consists of a small board, which has impregnated electronic circuits stamped on it. Inverters look like thin boards about the of two sticks of chewing gum. The inverter and its bulb control the intensity of the liquid crystal display, which lights the screen monitor. The computer can control the output voltage of the inverter and either lighten or darken the screen. A special type of inverter can adjust the brightness of the screen by using an internal sensor to judge the room brightness, and then adjust the screen accordingly. Failing inverters give off some specific warning signs, which can be recognized by observing different screen characteristics.

Short Intermittent Display Upon turning on the laptop, the screen flashes on in the normal mode for a short period and then blinks to black. A very faint image appears in a dark background, which will be very hard to see almost invisible. After shutting off the laptop and restarting, the same mode occurs, where the screen appears normal for a few seconds then fades to black. This condition points to a failed inverter. To confirm this, plug in an operational external monitor; if the external monitor functions, the inverter has failed. b> Total Blackout with Ghost image b> The laptop turns on, as indicated by the power supply button, but the screen comes up black. The screen comes up black after restart. You might be able to detect a very dim or ghost-like image on the monitor. When you plug in a known functioning external monitor, the external monitor operates normally. This mode of display indicates a failed inverter. b> Long Term Periodic Operation b> With this failure mode, the laptop screen illuminates normally upon start-up and remains that way after several minutes, hours or even days, until it goes very dark again. Brightness controls or restoration attempts do not work. Most often, the screen will function normally with a computer restart, but will eventually return to black. Faint ghost images might appear, as seen in the total blackout mode. b> Dark With Color Variation b> Upon computer start-up, the monitor shows black or dark gray, accompanied by very faint images. The screen might have an intermittent color change, or remain on with a non-standard color variation, like pink or red. b> Auto Control Switch b> If the screen appears black, with no faint or ghost images, look for the lid switch near the back hinge. The switch, when depressed with a closed lid, shuts off the computer and monitor functions. Sometimes the switch becomes stuck in the closed position, disallowing the computer and monitor to turn on when opened. Pushing the switch manually several times can often free it up. If the switch tab has broken or jammed inside the case, it needs replacing. b> Loose Connection In this mode, the display looks normal upon start-up, but tapping the side case of the computer turns the screen black. More tapping results in the screen functioning normally then cutting out again. This condition points to a loose wire connection from the inverter to the LCD backlight lamp, or the video cable. The connectors can be accessed by removing the monitor bezel screws and pulling the plastic retainer off. Both connectors can be cleaned and refitted.

Feb 10, 2013 | Lenovo G550 PC Notebook

1 Answer

Latitude B130 screen works great then cuts out to complete black, works with external monitor


Are you sure that the display is not set for external monitor only? Also take bright flashlight and shine on the display. If you can see the images then the problem is with the back light and usually caused by a bad inverter. Some times you can get the back light or inverter bu most times it is easier and cheaper to replace the entire display.

Aug 20, 2012 | Dell LATITUDE Computers & Internet

1 Answer

My monitor on my Dell laptop went completely black while I was on it. I have tried turning it off and back on, and the monitor is not working at all


You may have a defective CCFL backlight, it may have the following symptom: Screen flashes on and off or displays reddish pink hue. Picture stays on in red and slowly be come normal. Picture flickering with dim display or appear black. Picture flickers on and off. All these symptoms indicate that the LCD backlight lamp (CCFL Lamp) has reached the end of the life and all you need to do is replace the CCFL lamp.
To determine if the video card or the LCD is faulty, connect an external monitor to your laptop and power the monitor up first then the laptop, if you see the normal Windows images then the video card and laptop is OK and the problem is definitely the backlight. Dim image and/or dark display on the laptop's LCD screen indicates a faulty LCD backlight. It could be a faulty inverter that supplies high voltage to the CCFL lamp or it is the CCLF lamp is nearly burnt out; usually the CCFL lamp fails before the inverter.
The inverter can be replaced easily but the CCLF lamp is more time consuming and requires soldering skills.
Check out LCD Parts for service, parts, and DIY info Use this link to their WEB site: -
www.ladparts.net

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2 Answers

I have a Dell laptop D505. The laptop powers up but the screen display is very dim. I can't see the image on the monitor. I've tried to manually increase the color/brightness button and nothing changes. ...


Sounds like your inverter or your backlight is failing. The inverter is an easy repair, the backlight can be replaced but it involves taking the LCD panel apart, The backlight comes installed on new screens. I can include a service manual below and possibly a generic guide to backlight replacement....

http://support.dell.com/support/edocs/systems/latd505/sm/display.htm#1052500

http://www.laptoprepair101.com/laptop/2007/01/31/replace-screen-inverter-fix-backlight/

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2 Answers

How do I get rid of a blank screen on my laptop


You may have a defective CCFL backlight, it may have the following symptom: Screen flashs on red/pink and off. Picture stays on in red and slowly be come normal. Picture flickering with dim display or appear black. Picture flickering on and off. All these symptoms indicate that the LCD backlight lamp (CCFL Lamp) has reached the end of the life and all you need to do is replacing the CCFL lamp.
Connect an external monitor to your laptop and power the monitor up first then the laptop, if you see the normal Windows images then the video card and laptop is OK and the problem is definitely the backlight. Dim image and/or dark display on the laptop's LCD screen indicates a faulty LCD backlight and it could be the inverter that supplies high voltage to the CCFL lamp or it is the CCLF lamp is nearly burnt out or burnt out, most likely this is the case.
The inverter can be replaced easily but the CCLF lamp is more time consuming and requires soldering skills.
Check out
www.lcdparts.net

Sep 16, 2009 | Dell Inspiron 1501 Notebook

2 Answers

Dell screen goes black , after 2 seconds but when low down the brightness it work good it not goes off , but it is very low brightness and difficult to read text some time ,


but when low down the brightness it work good it not goes off , but it is very low brightness and difficult to read text some time......WHAT?

Can you explain in a bit more detail please...I don't know what you mean by.........
'when low down the brightness it work good'?

But try holding down the FN key on your keyboard & tapping the 5fc1ca0.png Button that alters the brightness.

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1 Answer

The left side of my Dell inspiron screen is darker than the right. Changing the brightness only changes the brightness proportionately. any suggestions


You could have a defective screen - a defective inverter or a CCFL lamp.
To determine if you have a LCD screen or video card problem, read this and follow the instructions.

Defective CCFL backlight, it may have the following symptom:

  • Screen flashs on red/pink and off.
  • Picture stays on in red and slowly be come normal.
  • Picture flickering with dim display.
  • Picture flickering on and off.
All these symptoms indicate that the LCD backlight lamp (CCFL Lamp) has reached the end of the life and all you need to do is replacing the CCFL lamp

Connect an external monitor to your laptop and power it up, if you see the normal Windows images then the video card and laptop is OK and the problem is definitely the backlight.

Dim image and/or dark display on the laptop's LCD screen indicates a faulty LCD backlight and it could be the inverter that supplies high voltage to the CCFL lamp or it is the CCLF lamp is nearly burnt out or burnt out, most likely this is the case.
The inverter can be replaced easily but the CCLF lamp is more time consuming and requires soldering skills.
Check out www.lcdparts.net for parts, repair service and DIY info.

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1 Answer

Dim Screen when Power is Unpluged


If you see a very dim image or black screen or flicking image on the LCD screen it means you have a backlight problem.

Connect an external monitor to your laptop and power it up, if you see the normal Windows images then the video card and laptop is OK and the problem is definitely the backlight.

Dim image and/or dark display on the laptop's LCD screen indicates a faulty LCD backlight and it could be the inverter that supplies high voltage to the CCFL lamp or it is the CCLF lamp is nearly burnt out or burnt out, most likely this is the case.
The inverter can be replaced easily but the CCLF lamp is more time consuming and requires soldering skills.
Check out www.lcdparts.net for parts, repair service and DIY info.

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1 Answer

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Your display have an inverter driver broken, So the back light can't turn on. Here is a website that shows this issue:

http://josepino.com/?howto-repair-dell

Good luck!

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