Hello all,
We have managed to locate the problem. System is working again. The left speaker, wich had a red led turning green on cd or radio had a bad contact in the speakerconnector. The right speaker had a problem with the 'switch' -relais that puts the 35V to the amp. We just 'bridged' the relais and now both speaker are working fine.
BUT... after all this search and work, in transport, I've broken the left glass 🙁
So, next question, where to find a new or used left glass (window)???
Greetz from Belgium.
Pierre