SOLVED: W&W Rambox 32k current drain

[Hiwi]

Hi all,
i had contact to the developer of the Rambox and got some schematics.

I have the Rambox version II. The voltage / battery regulation in both versions I&II are the same.
There are some diodes and transistors, shutting the Rambox down when the HP-41 goes to sleep.
Here i will start investigation.

The current drain should only be some uA. Actually my box draws more than 10mA so i suppose the Rambox does not go to powerdown mode or there is a leakage current.

The other problem could be the switches, they are pulldowns and oxidation could cause higher current drain.

Ralf