TexuserSA001

Close-up view of the damaged area... The silver points must be the burnt soldered connection points. I think it got very hot...

Could it caused by my additional power supplied to the battery. See attached drawing. I tried to have some extra backup power supply to the alarm: Extra 12 V battery, charged by a solar panel charger. I did connect the alarm, to the load connection of the solar charger, with the diode in series.

I found some bits in the box. And the battery does not charge...

I found the site have some good discussions.

Hi, my alarm system gives a SERVICE" alarm at random times. If I understand the table correct, it relates to a fuse. The fuses seems to be not that "visible". On inspection, I found a loose component, and would like to identify that. Regards.