I think I found the problem. See attachment. I will have to check for shorted circuit first I guess. Is it possible that you send me a new board? With connectors to the switch? The other 2 wires I can solder it myself. Please let me know.

Thanks, I wil try to find a dealer in Holland. Just one question: I think the relais is not working. On Power On you should here a click if I remember well. That is not the case now. Can I test that with everything disconnected except the 220V?

The led is always off. When the problems started (display and lights switched on/off by itself for 5 times in a minute) the led did work after putting it on for about 20 sec. But now it is totally off.

After some dropouts of the LCD panel, the 12V circuit stopped totally. I checked both batteries and fuses. On my AL310BF unit, J1 and J2 gets the voltage of the battery, 12.8V. On the J3 connection to the TERRA node, there is only 7V available. Then to the CIELO: I measure only 1.8V on the TIERRA to...