No backlight, already replaced a bunch of parts

Son_of_Thunder · Feb 9, 2010, 01:46 AM

Hey guys, a few weeks ago my screen started glitching out on me like crazy. I figured out that it was a blown capacitor on the board on the back of my lcd and ordered a new screen. When it got here I unhooked my old screen and hooked my new one to my inverter and motherboard. I could now see the Acer BIOS screen, but my backlight wasn't coming on.

I wondered if I had gotten a bad screen so I hooked up the old one, and still nothing, no backlight on that one either.

Thinking that I'd damaged my inverter or data cable I bought new ones, those got here today, and I still don't have backlight activity. At this point I've replaced almost everything, and my computer still outputs a signal to an external monitor, so I know that it's not a motherboard issue.

It's an Aspire 4315-2490. I originally had a glossy screen, and replaced it with a matte screen from a 4315-2004. They should be compatible.

Please, any help would be greatly appreciated

iPlayer · Feb 12, 2010, 02:56 AM

You have replaced everything.

Have you confirmed if the inverter board is getting power?

Are you certain the backlight is functional?

Feb 9, 2010, 01:46 AM	#1
Son_of_Thunder HardwareHeaven Senior Member Join Date: Jun 2004 Location: Kalamazoo, MI Posts: 1,441 Rep Power: 0 System Specs	No backlight, already replaced a bunch of parts Hey guys, a few weeks ago my screen started glitching out on me like crazy. I figured out that it was a blown capacitor on the board on the back of my lcd and ordered a new screen. When it got here I unhooked my old screen and hooked my new one to my inverter and motherboard. I could now see the Acer BIOS screen, but my backlight wasn't coming on. I wondered if I had gotten a bad screen so I hooked up the old one, and still nothing, no backlight on that one either. Thinking that I'd damaged my inverter or data cable I bought new ones, those got here today, and I still don't have backlight activity. At this point I've replaced almost everything, and my computer still outputs a signal to an external monitor, so I know that it's not a motherboard issue. It's an Aspire 4315-2490. I originally had a glossy screen, and replaced it with a matte screen from a 4315-2004. They should be compatible. Please, any help would be greatly appreciated __________________

Feb 12, 2010, 02:56 AM	#2
iPlayer Filled with noobsauce Join Date: Nov 2009 Location: between the buns Posts: 1,450 Rep Power: 59	Re: No backlight, already replaced a bunch of parts You have replaced everything. Have you confirmed if the inverter board is getting power? Are you certain the backlight is functional?