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brainwave89
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October 20th, 2020 06:00
XPS 9370 blinking backlight and power button
My XPS 9370 when turned on the power button light and backlight of the keyboard flashes white. The screen remains black.
I have unplugged the battery and with only ac adapter I get the same result.
Any suggestions on what might be the problem is appreciated.
brainwave89
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Posted October 20th, 2020 16:00
I also held down the power button for 30 seconds. That did not provoke any positive change. It is still flashing white after a pause of four seconds.
Sounds like some sort of zombie sleep mode.
A more drastic course of action:
Unplug the system, disconnect the main battery from the system board and remove the coin-cell (reserve) battery for 30 minutes (not seconds). Then put the reserve battery back in, and try powering up. If the system is in zombie mode, that should wake it. The reserve battery is located just above the main battery so it's easy to get to on this model.
if it doesn't, it sounds like a bad system board.
Service manual:
https://www.dell.com/support/home/en-us/product-support/product/xps-13-9370-laptop/docs
brainwave89
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Posted October 20th, 2020 16:00
Thank you, ejn63. The power light flashes white every six seconds.
ejn63
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Posted October 20th, 2020 12:00
Power off, disconnect battery and hold the power button for 30 sec.
Then try powering up again.
If the same fault shows, is there a pattern to the LED flashing -- i.e., 2 white, 1 amber, etc. ?