I have a MCL2P unit connected to beolink active unit powerlink output  and I use it to power up the ceiling loudspeaker in a patio.

 

Today I got a very strange behaviour  the unit start , the red light becomes green ( and I can hear the sound) and than after 10 / 15 second it switches off ( back to red light).

Any clue on what could cause this behaviour ?

I can not find a service manual for  MCL2P

 

Regards