Thanks you so much for this reply. I took off the 4 screws on the back and then took off 4 more screw holding the faceplate on, and then used my fingernail to pry off the faceplate and found the watchlike battery. It has 2.8 v left in it so it’s probably dead. I’ve had it for about 4-5 years.
Unfortunately the leads to the battery are tack welded to the battery so it looks like you need to buy a battery that has these leads on the battery, and then you have to melt the solder holding the leads to the board, and re-solder the new battery leads in place.
I can do all that but I don’t know where to buy the battery. Most of the battery is covered by the flat wide leads but I can see the following on the battery:
MS6 | | +
The letters in between the | | are covered with the flat wide leads that appear tack welded to the battery in 3 places, both on the top and bottom.
Any idea where I could buy such a battery? I’ve searched on Google, so far nothing. Batteries plus does not have anything like it.
Thanks again for your help!