After not being used for some time, my Multiplex mc 4000 profi gives the message:
multiplex p 4000 and version 2.0. display keeps flashing.
What could be the problem and can I solve it myself?
Battery and backup battery are ok

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    Okt. '24
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    Okt. '24
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Dear Bootje,

its time to send it to Multiplex, maybe it is a fault with the RAM or the Backup battery is empty, or the Mainswitchboard has a problem, however there is no easy solution to fix it.

BR Andreas