Question Toshiba Laptop Display not working

Aug 20, 2019
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I may have put to much work into this already but dang it, its frustrating me. My laptop that I didn't turn on for a few months did't turn on one day.

I tried a different power adapter and plug, new battery, did all the power tricks like turning off, unplug everything and discharging left over power, etc. No luck. No indicator lights, nothing.

I replaced the motherboard and now I get power! I see the charge indicator, I press power and that light turns on, the fan starts up...but the display gets nothing. no back light, nothing. I tried a sata cable and hdmi cable to other display and they do not work either...what is going on here?
 
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