OK - let me be more specific.

If the unit is more than a couple of years old - you can confidently
assume that the on board button battery is dead. This retains the state
of the NVRAM when the removable battery is removed. On the older LX20
units this is actually a little 9v battery not a button, but I digress.

Fact is that in these circumstances - the only thing keeping power on
the NVRAM is the primary battery - let it get too low, and / or remove
it and the electronic seal is gone.

Remedy is to service the unit every two or three years.

Not sure about the Colibri II - not played with one but...

Bruce

On 2012/05/18 2:07 PM, Paul Remde wrote:
wrote in message
...
All LX instruments do this...

On 2012/05/18 2:49 AM, Thomas McMullen wrote:
If you have a Colibri II make sure that the battery does not fully
discharge. Doing so will break the seal and it will need to be
returned for resealing. If you plan to store it for a period of time
make sure you check it on a schedule to ensure that the battery still
has a charge. The manual cautions you to not let the battery discharge
but fails to tell you the consequences of doing so.


--
Bruce Greeff
T59D #1771