Originally posted by jimkari0727 Thank you all for such a quick response and for the great tips. I was not aware that there is an internal battery in addition to the removable one. Ever since we had this problem, when the main battery is dead, we lose the date and time. I will look at changing the internal battery and also picking up a Pentax battery. I'll also check the wifi setting.
Try one thing:
1. in the menu, set AUTO-Power to OFF
2. insert a fully charged battery
3. leave it for several hours like this
4. change AUTO Power to your liking again
this might do it
The repair is pretty expensive, expect $ 250 or even higher:
The backup battery is on the backside of the mainboard as on the K-70:
Here you can see the photo of the K-70 mainboard.
Repair of the solenoid is usually around $ 250. But repair of the backup battery involves more work.
I have heard that WiFi can drain but never used it so I have it switched off anyway.
@ehrwin: Andrea's experience with his K-r indicates that a depleted backup battery drains the main batteries.
Could well be.