A31 Backlight Problem

[msnyder101]

I have an A31 whose screen goes dark shortly after unplugging the AC adapter. I can still see the screen in certain lighting conditions.
I have read multiple posts here on bad inverter or backlight. However never did anyone specify that it only occured when running on battery.
Could this be an entirly different problem?

[Harryc]

I'd be tempted to try a new battery. Is the current battery well used? Also check your power management settings for battery.

[msnyder101]

I discovered the problem is a little deeper then I first thought.
The Laptop doesn't recognize that it is on battery power (the power icon always says AC power).
With the adapter unplugged. The battery meter will stay at 100% then suddenly drop to 1%, the same time the screen goes black(dark). Also when I check the battery information it says that its charging even though the computer is not plugged in.

[Harryc]

Yes, this sounds like one or more bad cells in the battery. Worst case is the charging circuitry on the systemboard or a fuse, but try a battery first. Borrow one if you can.