Ok! Thank you very much for your answers Florian!

I will send it to a skilled serviceman!

Best Regards and have a good day!

Alexander Henriksson

Hello Alexander

> Is there a clue to what has happened Maybe I

have to buy a new PSU-unit

> to send with the MP4 to the

serviceman..
One cannot tell, what really happened. The synth has to be demounted
completely and one has to test and reconnected every module
systematicall step by step. Reconnection means also to use special fuse
cables that protect the parts that are still working.

Florian