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This guide will help you to remove the LCD screen and inverter board from a Sony Vaio VGN-SZ645 laptop display. I think these instructions will work for many other Sony Vaio models.
Do not forget to remove the battery before you start.
Related articles: In my previous post you’ll find how to remove the keyboard and replace the hard drive.
OK, let’s take apart the display panel.
STEP 1.
Using a sharp object (or small screwdriver) remove four rubber plugs. There is on plug in each corner of the display bezel.
STEP 2.
Remove four screws found under rubber plugs.
STEP 3.
Start removing the screen bezel as it shown on the picture below.
STEP 4.
Continue removing the bezel. Be careful, do not apply to much force because the the screen bezel is made of thin plastic.
STEP 5.
Remove the screen bezel.
STEP 6.
In order to replace the screen inverter you don’t have to disassemble the laptop any further. Simply unplug two cables from both sides of the inverter board. I pointed these cables with two red arrows. Carefully remove the inverter board and replace it with a new one.
STEP 7.
Here’s how you can replace the LCD screen.
Carefully remove the LCD screen from the cover and place it face down on the keyboard.
STEP 8.
In order to remove the LCD screen you’ll have to:
1. Unplug the video cable from the connector on the back of the LCD screen.
2. Unpug the LCD backlight cable from the right side of the inverter board.
Now you can replace the LCD screen with a new one if needed. Search for the replacement LCD screen here.
January 4th, 2009 at 5:29 pm
Have you ever seen a laptop screen that has faint color lines at right angles with black streaks and a “black hole”. If you work the screen hinge a bit you can see the normal desktop icons along the left edge. the laptop is a Sony Vaio PCG-7X2L
Thanks,
Frank
December 29th, 2008 at 9:27 pm
charles adams,
I’m not sure if there is an upgraded fan for this laptop.
The backlight lamp installed inside the screen. The backlight lamp gets power from the inverter board. The inverter board gets power from the motherboard via a cable.
I guss in your case it’s either bad cable or motherboard.
Also, do you have a lid close switch on your laptop? When the lid close switch is pressed down, it cuts off power from the inverter/backlight.
Make sure the switch moves freely. When the lid close is dirty it might get stuck inside the laptop case and the laptop “thinks” the display is closed.
December 29th, 2008 at 1:44 pm
I have a Sony SZ48GN_C with a noisy fan (u can hear the bearing when it stops) where can I get an upgraded fan and what model should I ask for? Also the screen on another has lost its backlight but I can clearly see the screen itself is not damaged. I bought a new LTD133EXBY screen when in China but it exhibits the same symptoms, ie no backlight. Both old and new screens seem to have their own attached inverter board attached to it…and there is only one connector…..surely the new screen cannot be faulty….does the screen get its backlight from somewhere I cannot understand?thanks
Charles
December 13th, 2008 at 12:37 pm
R&R the LCD Inverter using these instrucions without a problem. Nice and clear. Salvaged a laptop that I was told, by a repair shop, would need a new screen and be more expensive than a new laptop. Thanks for the helpful guide to dissambly of the screen/top to access the inverter.
November 29th, 2008 at 3:56 pm
Thank you for the guide. We used this for the Vaio SZ340 and it was almost identical except that the model number of the removed screen was a Sharp LQ133K1LA4A. We replaced it with the Toshiba LTD133EX2A. They seem interchangeable except that the new inverter wasn’t compatible with the SZ340. However the old inverter seems to be compatible with the new screen so we kept it.
Removing the Bezel was significantly more difficult than the one step shown, but in the end it just required running a screwdriver around the perimeter (carefully).
November 20th, 2008 at 1:59 pm
John,
The cooling fan is buried deep inside the laptop. You’ll have to remove the top cover if you want to replace the fan.
Here are links to laptop service manuals for some Sony Vaio models in PDF format. You’ll find step by step disassembly instructions in the manual.
November 20th, 2008 at 1:41 pm
Do you have a procedure for replacing the fan in the SZ series. I have cleaned everything the best I can, and have replaced the keyboard using your procedure for the hard drive. Will probably replace that soon too. However, I have pretty bad fan noise. Sounds like a bad bearing. Cleaned repeatedly with compressed air, but does not change anything. Looks like it is in there pretty good and did not want to damage the laptop trying to fix it.