Not receiving power from the battery, but getting it from the power adapter

Check for corrosion on the battery contacts, If you find some clean it using a pencil eraser.

Otherwise you're looking at an internal malfunction that prevents the cam to draw power from the batteries. Some transistor needs replacing, if you can get to a lab that has experience working on these, shouldn't be too expensive.

Good luck

There is an internal chemical fuse which opens when there is a problem with the battery. If you are using a generic A/C adaptor, this is the cause of the problem. The A/C adaptor provides enough current to operate the camera but fails in this regard when you're charging the battery on the camera. We see many of these cameras with this problem caused by safety fuse being open. This is not a serious problem and can be resolved by replacement of the battery safety fuse. This is a surface mount device and must be replaced by an experienced technician.
Hope this helps you.

Joe Weibel
customelectronics.org

Battery does't take charge, need to be replaced