Benhs1898,
I have removed the top and see the screw.
now before I pull out the board can you tell me how it is connected to the battery?
Is there some long wires coiled at the bottom or is the card sitting on contacts?
If sitting on contacts is the case that could be a simple cause to it's failure.
I am assuming that the battery does not come out with the board through the top.
Thanks,
Keith