I don't understand, you did replace the battery and it still will not power up evenwhen on AC? Are you sure your AC is working?
In my experience, some devices don't care if they are plugged in or not of the battery is done. They want to run on the battery and that is it.
emiossionwiz, who I frequently see around these virtual halls, has hit the nail square. Expect about two years from a battery, then expect to replace. If you get more time, GREAT!
Find replacement battery at a FixYa.com advertiser, LG, your local Radio Shack or Big Box store or
www.batteries.com.
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