Hi Peter,
Thank you so much for your hint. I also think it could be a wiring problem. Maybe it would be helpful to look inside the pleo and search for a broken wire. This is possible (my husband is able to do this) but it takes much time. Last week we changed a circuit board in a pleo. Now pleo is back in life

but we were busy for 4 hours.

. But I think this will be the only possibility.
Thanks for your support !
Tina
P.S. Peter, isn't it funny that we meet here on this forum ! Do you remember ? Some days before Christmas -the pleo from Germany that takes nearly 3 weeks until he reached his new home in spain ? What a surprise ! Greetings Tina