Re: Asus X555L backlight shuts off when on battery
Just yesterday I ran into this issue, but on a Lenovo laptop, so it's not strictly related to Asus apparently (which makes sense if you thing about it, because the problem lies with the display panel, not the MB). I don't remember the model, but it must be Y500 or something very similar, because I grabbed the boardview from here and it matches perfectly (big cheers to Vannix for providing it).
A colleague of mine brought me this Lenovo laptop to have a look at it after it took a drop and one of the hinges broke. Aside from that, there's also the issue of the backlight going off when running on battery, despite the laptop still running. Using the boardview, I tracked down the BL_ON and DIM signals and they were present in both cases at the connector, so I concluded the drop must've somehow damaged the panel which is now unable to sustain backlight operation on 7v from the battery, as opposed to 20v from the adapter, for one reason or another. It's a touch-screen display, so I didn't take the lid apart to inspect further, so I told the guy it's his choice, since I didn't want to risk cracking the digitizer...
Just yesterday I ran into this issue, but on a Lenovo laptop, so it's not strictly related to Asus apparently (which makes sense if you thing about it, because the problem lies with the display panel, not the MB). I don't remember the model, but it must be Y500 or something very similar, because I grabbed the boardview from here and it matches perfectly (big cheers to Vannix for providing it).
A colleague of mine brought me this Lenovo laptop to have a look at it after it took a drop and one of the hinges broke. Aside from that, there's also the issue of the backlight going off when running on battery, despite the laptop still running. Using the boardview, I tracked down the BL_ON and DIM signals and they were present in both cases at the connector, so I concluded the drop must've somehow damaged the panel which is now unable to sustain backlight operation on 7v from the battery, as opposed to 20v from the adapter, for one reason or another. It's a touch-screen display, so I didn't take the lid apart to inspect further, so I told the guy it's his choice, since I didn't want to risk cracking the digitizer...
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