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Rexbubble
Paper Tape
Posts: 2
Registered: ‎04-02-2018
Location: US
Views: 229
Message 1 of 1

Thinkpad w540 / w541 backlight flashes on battery power

Has anyone with the 3k displays experienced half of the screen dimming and backlight flashing while on battery power?

This is happening on my W540 when the battery reaches about 30%, it first started at about 50%. 

I ran the battery reset gauge which seems to postpone the issue until the battery is lower around the 30% (better now).

This is not a Windows/driver issue because at about 5-6% it happens in bios.

I am leaning towards a defective battery or LCD inverter which appears to be attached to the LCD itself. 

 

Computer runs fine on AC and full battery

 

I took the whole thing apart and checked cables, seems fine.

 

Anyone else who has had this problem please help me with the solution, what to replace. 

 

Thank you

 

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