Comments on: How to remove LCD screen and inverter board from Sony Vaio VGN-SZ645 display

By: Brian

Brian — Tue, 16 Mar 2010 18:28:02 +0000

I am trying to repair a sony SZ645. It has no picture but works with an external monitor. I pulle the bezel off and the screen but your photos show a video cable taped to the back of the screen. Mine does not have this. I have had several people tell me this screen has no inverter and they have tried to sell me a bulb. There is a small board taped to the bottom of the screen and I am assuming this is an inverter. Can you confirm this unit is a LCD and not a LED screen?

By: Laptop Tech

Laptop Tech — Tue, 26 Jan 2010 18:45:50 +0000

LimLim,

I have VGN-SZ75GN, it has no problem with inverter. But seeing your post, I have question regarding the LCD position. My SZ75GN LCD screen viewable area is not centered, a little bit to the right site. (only about 1mm I guess). But it annoys me each time I look the screen, espesially with light color wallpaper. Can I reposition the LCD panel a little to the left? What does hold the LCD panel from the body?

I cannot answer your question without looking at the laptop. It’s necessary to remove the screen bezel to find out what’s going on. Maybe screws on one left side of the screen got loose and the entire screen moved to the right. Just a guess.

By: LimLim

LimLim — Tue, 26 Jan 2010 03:35:56 +0000

I have VGN-SZ75GN, it has no problem with inverter. But seeing your post, I have question regarding the LCD position. My SZ75GN LCD screen viewable area is not centered, a little bit to the right site. (only about 1mm I guess). But it annoys me each time I look the screen, espesially with light color wallpaper. Can I reposition the LCD panel a little to the left? What does hold the LCD panel from the body? Thanks.

By: Lorcán

Lorcán — Tue, 05 Jan 2010 10:49:29 +0000

Thanks very much for your detailed reply.
I’ll try your recommendations.

Best wishes

Lorcán.

By: Laptop Tech

Laptop Tech — Sun, 03 Jan 2010 21:37:41 +0000

Lorcán,

I have a Vaio VGN-SZ4XWN/C and it shows similar symptoms to many mentioned above…the screen is very dark but slightly visible (in a strong light) so I guess the inverter or backlight is dead. I opened the screen but didn’t notice the backlight. I assume this model carries a backlight as I see one for sale on ebay.

The backlight lamp is mounted INISIDE the LCD screen. It’s very hard to remove and replace.

I cannot tell if your problem is related to the inverter or backlight failure without testing it.

Here’s what you can do. Test your laptop with a known good backlight lamp as it explained here: http://www.laptoprepair101.com/laptop/2009/05/04/how-test-lcd-screen-inverter-in-laptop/

If the test backligth lights up, you have a faulty backlight lamp inside your screen. If that’s the case, I would suggest replacing the entire LCD screen. Again, it’s very hard to replace the backlight. Just in case, here are instructions: http://www.laptoprepair101.com/laptop/2007/12/09/replace-laptop-backlight-ccfl-lamp/

By: Lorcán

Lorcán — Sat, 02 Jan 2010 12:19:40 +0000

Hi & Happy New Year

I have a Vaio VGN-SZ4XWN/C and it shows similar symptoms to many mentioned above…the screen is very dark but slightly visible (in a strong light) so I guess the inverter or backlight is dead. I opened the screen but didn’t notice the backlight. I assume this model carries a backlight as I see one for sale on ebay.

However I cannot find an inverter available for this model. Is there a generic inverter that would do the job ? Also, I see above that these problems could also be a faulty Motherboard….could the Motherboard be the problem ? I have the Laptop attached to an external monitor and it’s perfect…does this mean the Motherboard is OK ?

Thanks,

Lorcán.

By: UTtheGeek

UTtheGeek — Mon, 28 Dec 2009 10:32:35 +0000

i hav VGN-SZ430N, there is a problem with my LCD, dead cells are appearing continuously. Can any body tell me how to prevent from dead cells on LCD????

By: ruslie

ruslie — Thu, 24 Dec 2009 07:17:51 +0000

should I replace the sony VGN lcd with lcd from sony also? can I use other brand as long as they are same size?
if not, what are the differences between them?

thank you

By: JayTreezy

JayTreezy — Thu, 24 Dec 2009 00:54:22 +0000

Thanks for your time on these LCD screens for all of us who need it. I am also having some difficulty removing the bezel from my VAIO SZ-370P. Unlike your SZ-645, I have plastic coverings (or could be stickers to the best of my knowledge) where your bottom rubber plugs are located. I have removed the plugs and screws at the top of the screen, however am reluctant to remove the bottom part since I am afraid of hidden screws. Are there any screws hidden under there? Thanks again for your time.

By: Laptop Tech

Laptop Tech — Mon, 21 Dec 2009 23:38:30 +0000

Mike,

One time I grabbed the screen from the top and a black line came down..then i touched more areas of the top and the whole screen went black from every area i touched. ( i grabbed it from the middle, solid black line in the middle, then from the side top (to see if anything else would happen) and the other half went black lol)

Should I replace the whole screen? if i do does it come with the video cable part and the connections (i’m scared that that might be the thing thats damaged)

It sounds like you damaged the LCD screen and it has to be replaced.
Replace just the screen, do not replace the cable. I don’t think it’s necessary.

This laptop is pretty old now, is it even worth replacing?

Find our how much is a new replacement screen. This will answer your question.