04-24-2018 09:19 PM - edited 04-24-2018 09:19 PM
Sorry if this has been asked before, I looked around as best as I could with the search features, googling, etc.
The thinkpad powers on just fine, boots into windows, there is no backlighting at all. Had to use a flashlight to navigate. The red dot on the back of the screen for the i on thinkpad does light up though.
Is the screen bad, or is the cable loose? Should I try the motherboard side first or the display?
04-24-2018 09:59 PM
It is impossible to say. The screen could be bad. The motherboard could have a problem - most likely a fuse. The Hall sensor that switches when the lid hasclosed could have failed. sorry.
04-24-2018 10:04 PM - edited 04-24-2018 10:07 PM
Thanks for the reply. If the sensor was tripped, the LCD wouldn't be on and displaying though... right? The LCD works fine other than no back lighting. Guess I will have to tear into it and see what I can find. Hopefully something popped loose, but I will test the fuses too just in case. All else fails I get a nicer display
04-24-2018 10:21 PM
no. the sensor only shuts off the backlight
05-17-2018 01:59 PM
Do you know if there are any guides or manuals that document the internal hardware? I can take pictures of the insides too if that helps.
I have opened it but see no glaring issues, I will try to find the time to sit down and tinker on it more on my own. Thanks for your help
07-05-2018 10:00 PM
Tested the big fuses i could find for conductance, f2,f10,f22 and one other IIRC. All seemed fine.
Finally found the hall sensor, there is a rectangular rare earth magnet at the edge of the laptop by the left n right mouse keys. You can find it with any ferro materials dragged on the casing.
The sensor appears to be on the same circuit board as the webcam in the screen. I havent dug into that to see if i can jump it or anything...