How to make a replacement for my Extensa 4420 backlight?

My screen went black on my Acer Extensa 4420 tonight after the screen had been sort of flickering 15 minutes.  I always saw the mail page, but it was too dark to actually do something with it.  I think I need to replace the backlight, but can someone tell me where to find one, or if it's possible to do just the backlight?  I was thinking just to get a new screen.  Would that take care of the problem or is it something in the motherboard.  I can use the computer, but when it comes to their fixation, IM completely lost.  Thanks to anyone who can help me with this problem.  I am disabled and the laptop is my source of reading and my only mode of entertainment, I do not leave my House very often.

The issue could be with the inverter Board or the backlight.

Part numbers compatible ups are:

19.TCBV1.001

19.TK501.001

19.TK501.002

Compatible screen reference numbers are:

LK.14105.018

LK.14106.011

LK.14106.014

LK.14108.010

LK.1410D.016

Tags: Acer

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