Question about Gateway MX8734 Notebook
To be sure it is only the back-light, look at the screen during boot at a sharp angle to see if you can discern any 'ghost' images.
If so, then the video circuitry is functional.
The fluorescent tubes do have a finite lifespan but if you saw no warning such as dimming or flickering, it is probably a failed inverter that produces the high voltage for the tube.
These are frequently outsourced, often made by TDK. They are on a small board and not too tough to replace.
Dunno if it is the right one for your laptop but there is one listed on eBay currently:
Check the inverter board for an obvious part number to see which you need.
Posted on Aug 04, 2010
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Posted on Jan 02, 2017
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