Do you want to know how to take apart the display panel and replace the inverter board on a Dell Inspiron 8500/8600 series laptops? Check out these instructions created by Krazykwok (1.34MB pdf file).
This is not hard to do at all, $40 and 20 mins of work might save you quite a lot of money. Don’t be afraid to pull the frame, it can’t get worse than not having it fix. Pull out the battery if you want to but I didn’t, so that’s why you see me disconnect the power panel connector below. All you need is a good sets of little screw driver from Walmart. You will need a good and solid quality philips head mini screw driver for the 2 screw on the inverter.
These disassembly instructions should work for many other Dell laptops, because they all engineered similarly.
If you are taking the laptop apart to replace the inverter, you don’t have to remove the keyboard bezel as the author of this guide did. It’s not necessary to disconnect the video cable from the motherboard, simply remove the battery.
For the display panel disassembly, follow these steps:
1. Remove 8 screw seals from the LCD bezel.
2. Remove screws securing the LCD bezel to the LCD cover.
3. Remove the LCD bezel.
4. Remove screws securing the inverter board. Remove and replace inverter.
The author spent about $40 for a new screen inverter. You can find it for about $20-25 on eBay.
You may ask. Why would I want to replace the inverter board? Let me explain it in a few words.
The inverter board works as a power supply for the LCD screen backlight lamp. When inverter dies, the LCD screen becomes very dark. The laptop still works and the image is still on the screen but you barely can see the desktop because the screen is very dark. You’ll experience something like this guy with his IMB laptop:
I could get the screen to come back on momentarily by toggling Fn-F7 a few times, but after about 10 seconds it went blank again. After rebooting, same thing — 10 seconds and blank.
Upon closer inspection, I noticed that I could actually see the windows very, very dimly on the screen.
Check out my previous post for more information about troubleshooting LCD screen backlight failure.