Power failure and I need to remove tape

I had a similar problem, and I think I have a simpler solution. I have a Canon ZR85, and it may be similar to yours in that on the docking bay (where you attach the battery to the camera), there should be a small removable cover that holds a smaller, flatter, circular battery. Replace this. I used a CR1620 battery lying around from a watch I took apart, and now my camera powers up fine even though it requires a CR1616. I'm not sure of the cause of all of this, but I sure hope that helps. It was a definite relief for me.

If you can do the repairs yourself there are two ways to fix the problem.
Dismental the camera. Try to locate the power board. have a keen look at the components near the battery connector or the power connector. there you will be able to locate 3 to 4 safety fuses. check the continuty. if found open replace it and the problem can be solved. AND

the other way is to locate the motor for tape deck loading mechanism. Remove the flex ribbion connector of the motor from the pcb, then try giving 3volt supply from an external device to the motor in both the direction. in one direction it will move the deck outward, but be carefull when the cassette is being ejected a little portion of the tape may get damaged.