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Can not find inverter for laptop compaq presario qc56-115dx

Scrreen is black but i barely see its working . do i have to fix just the inverter or the hole screen thanks

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  • Expert
  • 78 Answers

That is your motherboard fault

Posted on May 23, 2014

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Posted on Jan 02, 2017

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KatFishGR
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SOURCE: compaq laptop display not working

Have you tried an external monitor? Plug one in while the laptop is off, then turn it on. If no video on the external monitor, then there's a hardware issue somewhere else. Such as ram, motherboard or possibly cpu.

Posted on Oct 26, 2007

SOURCE: black screen HP presario V2000

yea, because cleaning ram is going to solve your inverter issue

Posted on Nov 08, 2007

SOURCE: Compaq Presario V6000 Laptop-Black Screen

i have the same problem, booted with lcd monitor... think it might be capacitor... pain in the but to doit yourself $300 at the shop. having this problem with two hp computers

Posted on May 28, 2008

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SOURCE: compaq laptop pink screen sometimes

The normal cause of a pink tinted screen is that the LCD back light is beginning to fail. Kind of like a regular florescent bulb does when it starts to go bad. It may last for a while, but eventually you'll have to replace it.
Ron

Posted on Dec 13, 2008

  • 1 Answer

SOURCE: When I turned on my Compaq Presario CQ40 laptop, t...

check the ram. i have the same problem then i remove the ram then re install it back properly

Posted on Jun 29, 2010

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2 Answers

Compaq presario cq61 display not show


I had the same problem. While rebooting the laptop the screen would be on for a few seconds after it finished rebooting then the display would go black. If you looked very carefully at the screen you could see the image was there but there was no light behind the screen to make the image visible.

I removed the black plastic display bezel cover that goes around the edge of the display screen to check out the lights and wiring. I found a small magnet that belongs inside the display bezel had fallen out of it's slot in the plastic bezel and was stuck to the inverter pcb (printed cicuit board). To fix this problem I secured the magnet into it's slot inside the display bezel with a bit of glue. After fixing the problem and putting the display bezel back together the laptop worked normally.

This magnet is how the laptop knows the lid is closed. When the laptop is closed the magnet is moved closer to a magnetic switch on the inverter pcb and activates the switch. The laptop thinks it is closed and shuts off the lights behind the display screen. When the magnet fell out of it's slot and stuck to the inverter it activated the magnetic switch all the time whether the laptop was open or closed. This caused the laptop to think it was closed and shut off the lights behind the dispaly screen as soon as the reboot finished.

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Aug 11, 2012 | Compaq Presario CQ61-310US Laptop

1 Answer

I have my compaq presario cq60 laptop and i got a trouble on my screen which is the brightness become low and i can not adjust using the fn key plus f8. how can i adjust to return on the normal...


How low has the brightness gone? If it is very dark and you can barely see anything on the screen, it may be that the inverter board has failed and needs replacing.

The problem could also be caused by the screen itself, or the motherboard, but the inverter is the most common solution.

Jul 23, 2011 | HP Compaq Presario CQ60-249US Notebook

1 Answer

How to fix compaq presario cq60-215dx black screen?


Hi,
With the laptop turned on, shine a bright light onto the screen. Can you see anything on the screen (like windows log on screen)? If so, your inverter has failed. This can be replaced relatively easily. Please post back with the results of the above.

Zahc

Jan 26, 2011 | Compaq CQ60-215DX Notebook

1 Answer

Compaq presario 700 monitor off


Hi
Maybe, depending on the problem. Laptop monitor problems fall into three categories. 1. Screen electronics or lamp. 2. Inverter. 3. Laptop video chip. I've been repairing latops ever since they arrived on the market. First connect an external monitor to the laptop - this will show you whether or not the laptop motherboard is working correctly. If it is then you'll need to replace either the screen or the inverter. So as not to waste alot of money, at this point I would suugest going to a reputable repair person or check my website www.micromendllc.com

Jun 05, 2010 | Compaq Presario 700 470024-192 Notebook

1 Answer

I have a Presario C500 Compaq laptop


when upower up press F8 key then enter in enable vga mode.
then set screeen resolution to 1024*768
and if u r not abled to login enable vga then enter in safe mode.
then go to start menu run then type in run "chkdsk /r"
thats it
then restart it then it fix error on hardddisk.

Jun 08, 2009 | HP Compaq Presario C500t Notebook

1 Answer

No video on Compaq presario C306


When the backlight is black ie. the CCFL lamp is not illuminated that means the CCFL lamp is dead (it is basically a very small fluro tube) or the inverter is faulty and it is unable to supply high voltage to the CCFL lamp.
make sure the inverter is firmly seated and connected.
Check the wires to the CCFL lamp, there is a couple of wires from the inverter to each end of the CCFL tube.
Check the CCFL lamp voltage on the inverter it should be 100 - 150 volts.

May 05, 2009 | HP Compaq Presario C306US Notebook

1 Answer

LCD Screen is black


It could be either, if you can get another LCD screen (same make/model) you can swap to ckeck it out.
You could check the inverter by touching its output and if you get a bit of an electrical shock then you know the inverter is working or check it with a multimeter if you don't like electric shocks.

Dec 27, 2008 | HP Compaq Presario V2000 Notebook

1 Answer

Compaq presario 2200 screen stay dark


sounds like the inverter has gone, the only way to test this is to remove the laptop lid, remove the bezel (front plastic cover) please take care not to crack or splitt the plastics, then get an electical tester and test the inverter coil to make sure a current runs through it, if it doesn't its the coil, if it does you need a new inverter, the coil is located under the plastic sheath

good luck

Nov 14, 2008 | HP Compaq Presario 2200 Notebook

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