Chosen Solution
Hello guys, While i was working my laptop suddenly shut down with no reason and won’t turn on again, I tried: 1- Booting without battery plugged in and it failed 2- Changing CMOS Battery and didn’t work I found that when i open the lid the laptop turns on and keep restarting (exactly like someone keeps pressing the power button), I tried to connect the laptop to an external monitor then i opened the lid for 2 secs and closed it again, The laptop turned on successfully without any problems on the external monitor, but once the lid is open again it goes for infinity loop as mentioned above, I suspect that there is a conflict in the power cycle that causes the lid pressing the power button once it’s opened and i don’t know how to solve it, Any suggestions? Thanks in advance :)
Hi @yusuf10 Not a problem with your English, it’s fine ;-) Don’t know if there may be a problem with the lid sensor then Don’t know if this - example only is it or not. Found this by looking at the parts list (click on Select Commodity > cards misc internal (4) to find the part number for Sensor Board C Yoga 3-1170 CARDS MISC INTERNAL 5C50H15168. The hardware maintenance manual shows that it is near the camera board and is located in the top of the lid. (see p.54) Try covering it up somehow (or does it need a magnet??) and check if you don’t have to close the lid to keep the laptop on. Or perhaps the EDP cable may be damaged where it passes through the hinge to get from the motherboard to the lid, as the webcam and sensor wires would be in this cable, I think. When using the external display this means that the laptop display is off is that correct? I may be totally off the track with this off course, but it seems that something with the lid is conflicting with maintaining the laptop on as per normal.
