hihihi wrote:

Normally it stores the values of the voltage scales, time scale and other
things when i switch the PM3070 off.
When i switch the pm3070 on again the settings are restored.
But since a few days the settings are not restored.

Problem solved.

The battery was in a unusual place.
Outside on the back of the oscilloscope is a connector to remote control the
oscilloscope.
When this connector is not in use a block is plugged into it on the back.
Its called a PM8998.
Here you see it next to 4 connectors.
http://home.wanadoo.nl/hihihi/pm3070/img_0034.html

Inside this PM8998 is a battery.
You have to disassemble the PM8998 to see the battery.

I have replaced the 3 volt lithium battery.
Now the settings are stored and restored again.
It works :-)

Thanks for trying to help :-)

--
email hihihi wanadoo nl