I brought a replacement screen off Ebay to replace broken on my Sony Vaio. It comes on (dark) but the backlight doesn’t work.

Did you have light on the broken screen?
If the original (cracked) screen was lighting up, you can try installing it again and see if the backlight still works. Maybe your new screen is defective.

Screen vendor wants me to check a inverter fuse on the motherboard. Not sure where it would be located and how feasible it would be to replace.

Sorry cannot help here. I don’t fix motherboards on the component level.

what causes screen inverter board failure on hp laptop?

You know, sometimes electronics fail without any reason. Just some components go bad.

ASUS has these clips that protect the screen’s cables on the sides of the screen. What are they called?

I have no idea. Are these clips attached to the screen cover? If yes, most likely you will not be able to buy them separately. Probably they are part of the back cover.

I brought a replacement screen off Ebay to replace broken on my Sony Vaio. It comes on (dark) but the backlight doesn’t work.
I replaced the inverter board and still no backlight. Screen vendor wants me to check a inverter fuse on the motherboard. Not sure where it would be located and how feasible it would be to replace. Laptop is a Sony VAIO VGN-NS295J. Could you advise?

I just bought a new screen for my laptop and when I set it all up, the backlight doesn’t turn on.

Why did you replace the screen in the first place?

Inside my inverter, there is this little black rectangle thing. It has a crack in the middle, so I assumed it was that.

It’s possible.

Yes i am actually having troubles with wireless. Sound works great though. I guess if it is video card it would eventually stop working all together.

HP Pavilion dv2000/dv6000/dv9000 laptops are know for the graphics card failure. One of the symptoms – the wireless card stops working. You turn on the wireless switch, but the LED remains orange (suppose to be blue). Is it what you are experiencing?
The graphics fails because NVIDIA chip separates from the motherboard. If that’s the case, the laptop not worth fixing because it’s necessary to replace the motherbaord.
You can try the following trick though: http://www.laptoprepair101.com/laptop/2011/02/23/fix-laptop-motherboard-with-failed-nvidia-graphics-chip/