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HP laptop screen goes black after aminutes of use. It comes on randomly when idle, but then goes off again. I can see a faint image on the screen, it is not totally blank. I have started using an external monitor with it, but want my original screen fixed too. tried the procedure with the removal of battery.. didn't work. I have an HP dv5 1123tx machine, which is about three years old.

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  • wishlist878 Apr 11, 2011

    I'l try to check for that.. thanks..

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It sounds like you might have a loose connection from your LCD inverter or the LCD inverter needs replacing. The LCD inverter is what provides light to your screen. If you are tech savvy, you might be able to search the HP website for the service manuals and attempt to replace the LCD inverter by purchasing it off eBay. If not, you might have to resort to sending it to a local laptop repair center, since your warranty is no longer in effect.

Posted on Apr 11, 2011

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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

Laptop screen flickering


The video inverter may be failing, BUT...

More than likely the backlight is failing. If you can still see a VERY faint image on the screen this is almost certainly the problem.This is a very difficult fix. I recommend a replacement LCD.

It MIGHT be a bad lcd cable. With the laptop on, slowly open it from closed to open and back again and see if there is a position where the laptop screen does not flicker or turn off, [or if it does turn off if it turns back on.

If the screen goes COMPLETELY black then your GPU is failing.

Feb 21, 2012 | HP Computers & Internet

1 Answer

My laptop Presario. C751NR Notebook PC strats up with a blank black screen. The HP sound comes on, but nothing else. Can you please help? Marilyn


Do you or a friend have another monitor you can plug in? Do you get a picture on the external one? Also can you see a faint image on the laptop screen under bright lights? If you can you inverter board needs to be replaced.

You may just have a bad screen.

Oct 19, 2010 | Compaq Computers & Internet

1 Answer

Screen goes black but leaves a very faint image. this happens at random times. turming the monitor off and then on seems to fix the problem for a short time


You are losing your backlight. The bulb is probably overheating and dimming out, when you shut it down, it cools off and will relight.

Oct 11, 2009 | Samsung SyncMaster 920NW Monitor

2 Answers

The laptop turns on, but the screen stays black


If you can shine a light into the screen and faintly make out the images? Then it's probably the inverter/backlight board, not too expensive or difficult to replace in most cases. Let us know.

Jul 17, 2009 | Gateway MX6912 Notebook

2 Answers

Screen goes black on my hp pavilion dv4000 notebook


Try connecting an external monitor to the laptop, power up the monitor first then boot up the laptop. The video data will switch to the monitor automatically, check if the monitor dislays a normal image and see if the image stays on the monitor.
Also press and hold the Fn key and press the F4 key, these keys toggle the video output between the LCD screen and the video port.
Test to see if this functions correctly.
Get back to me with the results of the tests.

Jun 03, 2009 | HP Pavilion dv4000 Notebook

1 Answer

The screen is blank but I can see a faint image.


Try reseating the cable that goes to the back of the lcd and also the other end of that cable that plugs into the motherboard. If that doesn't do it then either the lcd or the inverter is bad. Either way when you get a replacement screen for a dell laptop it normally comes with a new inverter as well. If your laptop is under warranty thru dell then you can get it replaced thru them. If you have your serial number then I can look it up and see if your system is still under warranty.


May 26, 2009 | Dell 0JM629 Inspiron 1520 Keyboard

1 Answer

When the computer is turned on the monitor goes off. Then when I unplug it and plug it back in it comes on and stays on until I turn the computer off and back on again.


My monitor goes black but I can faintly see the images on the screen. It was said here that it appeared to be capacitors. What can do?

May 03, 2009 | Dell E176FP 17" LCD Monitor

1 Answer

Good picture for 30 seconds then screen goes black with a faint ghost of the image


the 12V is for speakers.. the 245bw takes regular 120V AC (same cord as your computer)

the buzzing is annoying, though. i don't know if it's a "feature" or just a side effect.. ie, if i could take the case off and poke around, i would. 4 times out of 5 it's some dumb piece of tin reverberating from a transformer or something..

Dec 03, 2007 | Mag Innovision LT576s 15" Flat Panel LCD...

3 Answers

Good picture for 30 seconds then screen goes black with a faint ghost of the image


i hope the problem will be in LOT of the monitor...you need to replace the LOT

Jun 14, 2007 | Mag Innovision LT576s 15" Flat Panel LCD...

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