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In the following guide I explain how to remove and replace damaged LCD screen in HP G50/G60/G70 notebooks. I’m installing a new LCD screen into a HP G50 notebook but all disassembly steps should be almost the same or at least very similar for HP G60 and G70.
By the way, HP G50/G60/G70 notebooks also known as Compaq Presario CQ50, Presario CQ60 and Presario CQ70.
In most notebooks you can replace the LCD screen without separating the display panel from the base but not in HP G50/G60/G70. In order to replace LCD screen in these models we’ll have to remove the keyboard, keyboard cover and display panel. Let’s start replacing the screen.
Need spare parts for your HP laptop? Search by the part name or number here. You can find the HP spare part number in the service manual. I linked to service manuals at the end of this guide.
In the next post I explain how to remove laptop motherboard.
STEP 1.
Turn off the laptop and remove the battery.
Remove one screw securing the Wi-Fi cover and remove the cover.
It is not necessary to remove the memory and hard drive covers. I marked them just for your convenience.
STEP 2.
Remove three (yellow) screws securing the keyboard.
Remove four (red) screws securing the keyboard cover.
If you are using this guide for replacing the keyboard, you have to remove only three (yellow) screws.
In G50 and G60 the keyboard screws are located in the battery compartment.
In G70 notebooks there are only two screws securing the keyboard and they are located on the bottom (there is a small keyboard stamped close to each screw).
STEP 3.
Carefully lift up the keyboard from the base.
STEP 4.
Place the keyboard so you can access the cable connector underneath.
You have to unlock the connector and release the cable before removing the keyboard.
Move the white clip about 2-3 millimeters towards the display panel and release the cable. Now you can remove the keyboard.
WARNING! The white clip must stay attached to the connector base. If you accidentally break the connector, you’ll have to replace the motherboard. If you work slowly, everything should be fine.
On the picture below the keyboard connector is shown in the unlocked state.
STEP 5.
Disconnect the switch board cable from the motherboard.
STEP 6.
Remove the keyboard cover.
Move the cover towards the display to separate from the laptop.
STEP 7.
Turn the laptop upside down and disconnect two antenna cables from the wireless card.
Each antenna cable has a golden head. Grab the head with your fingers and lift it up.
STEP 8.
Disconnect the video cable connector from the motherboard.
Disconnect the webcam cable from the motherboard.
Pull two Wi-Fi antenna cables through the opening.
STEP 9.
Remove four screws securing the display panel hinges.
STEP 10.
Lift up and separate the display panel from the laptop base.
In the following steps we will disassemble the display panel and remove the LCD screen.
STEP 11.
There are two screw seals located in the lower left and right corners.
Remove these seals with a sharp object and remove screws found under the seals.
STEP 12.
Start separating the screen bezel from the display cover.
Continue separating the bezel.
The screen bezel has been removed.
STEP 13.
The screen inverter board is mounted below the screen. The inverter is locked between plastic brackets.
You can remove and replace the inverter board without removing the LCD screen. Simply pull the inverter board from the cover and disconnect connectors on both ends.
STEP 14.
Remove two screws securing the right display hinge.
Remove the right hinge.
STEP 15.
Remove two screws securing the left display hinge.
Remove the left hinge.
STEP 16.
Remove the inverter board from the cover and disconnect one connector from the right side. By the way, this is the backlight lamp connector.
STEP 17.
Remove two screws securing the LCD screen on the top.
STEP 18.
Now you can separate the LCD screen from the display cover and access the video cable.
My HP G50 notebook didn’t have the webcam installed and the webcam cable was taped to the display cover.
If you have a HP G60/G70 notebook, most likely it came with the webcam. You’ll have to disconnect the cable from the webcam before disconnecting the video cable.
STEP 19.
Remove sticky tape securing the video cable connector and unplug cable from the LCD screen.
STEP 20.
Now you can remove the LCD screen from the cover.
If you are replacing the screen, you’ll have to transfer the left and right mounting brackets to the new screen.
Remove three screws securing the bracket and remove the bracket. Do the same with the other side.
The LCD screen model number is located on the sticker. In my laptop I had a screen with the following model number: B154EW08 v.1
The best way to find a new LCD screen for your laptop is either searching by the LCD model number (shown in the picture above) or using the HP part number.
The HP part numbers for LCD screen and other parts can be found in service manuals and here they are.
Service manual for HP G50 or Compaq Presario CQ50 (page 57).
Service manual for HP G60 or Compaq Presario CQ60 (page 4-23).
Service manual for HP G70 or Compaq Presario CQ70 (page 4-20).
After you find the spare part number for LCD screen or any other part, you can search for a new replacement part here. You’ll find many cheap LCD screen replacements.
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December 26th, 2011 at 12:27 pm
how do you reinstall the key board cove ribbon with the clip?
December 8th, 2011 at 6:12 pm
Frank,
So, the laptop power up when disassembled but fails to power up when assembled?
Sounds like some kind of grounding issue. Maybe the top cover is touches the motherboard somehow?
Make sure all screws installed correctly. If you use a long screw in a short whole, it might touch the motherboard. This is just a guess.
Cannot tell what’s going on without testing the laptop.
December 8th, 2011 at 6:05 pm
@ Phil,
Do it step-by-step. Try replacing the cable first. Maybe it will fix the problem.
December 8th, 2011 at 6:04 pm
@ John Wright,
This is correct. Most likely bad cable.
Maybe not properly seated memory module? Check internal connections. It’s possible some cables connected incorrectly. Really cannot tell what’s going on without looking at the laptop.
I believe this light turns on only when Windows OS loaded.
December 8th, 2011 at 2:20 pm
I have done exactly what you have on your website,except that while the laptop in uncovered the power comes on, but when I reassemble it does not power on. I have tried this several times with the same result.
Any idea?
December 8th, 2011 at 8:58 am
I just did the check. After moving the video cable while the laptop is running, the screen image was changing, but not the backlight. So the lcd screen was dark and changing. The backlight was only working on and off when i was pluging in and out the inverter. After a couple minutes, the video cable started to burn!
I am currently ordering a new video cable but I’m affraid that i will also need a lcd screen.
December 8th, 2011 at 7:25 am
Hi Laptop Tech,
Your instructions for accessing the LCD Display were very clear and useful although the model I have is a HP G70 120EA. The display would go of or wonky depending on the angle of the lid. This seemed to indicate a faulty Video cable or bad connection. After stripping the laptop down I checked the video cable connections and all looked OK. I decided to replace the cable anyway. This I did and rebuilt the laptop. I did notice that the original cable had a kink in it just where it crosses over from main chassis to display. I also noticed that after installing the new cable this was also getting twisted and kinked with movement of the lid.Seems like a poor design. After rebuilding it I get the power light on and nothing else. The wireless light no longer changes from red to blue. I can hear the drive and fan running and that’s it. Any ideas?
December 6th, 2011 at 12:26 pm
@ Phil,
I don’t think this is backlight or inverter related failure.
When backlight/inverter fails, the screen goes dark BUT the image on the screen doesn’t jump up and down like in your case.
I’m pretty sure it’s not the backlight related problem.
Here’s something to try.
Take apart the display panel but do not disconnect video cable from the screen. Turn on the laptop and try moving the cable while the laptop is running. If moving the cable affects image, probably you have bad video cable. Maybe there is short somewhere inside the cable. If that’s the case, replace the cable.
If moving the video cable doesn’t affect image on the screen at all and it fails randomly. Probably there is something wrong with the screen.
December 6th, 2011 at 11:49 am
@Laptop Tech
Thank you for answering. The laptop works fine on an extrernal monitor and I already tried to clean (alcohol) and reconnect the video cable at both ends. Nothing changed.
So It would be either a failed video cable or a failed lcd screen. Dont you think theres a chance the problem could be a failed backlight?
2. Failing video cable. Try replacing the cable.
3. Failing LCD screen. Replace the screen.
December 6th, 2011 at 11:04 am
@ Phil,
First of all, I don’t think this is inverter problem.
Second, before you jump to any conclusion, test your laptop with an external monitor. If external video works fine and the problem appears only on the laptop screen, this could be one of the following:
1. Bad connection between the video cable and motherboard or LCD screen. Try reseating the video cable on both ends.
2. Failing video cable. Try replacing the cable.
3. Failing LCD screen. Replace the screen.
It’s hard to troubleshoot this problem without spare parts. If you don’t have them, you’ll have to guess.
By the way, it the same problem appears on the external monitor too, this could be motherboard failure, probably bad video card.