I've been troubleshooting this DSC 1575 system for my wife's house. The system had been dead for quite a while when I looked at it, so I replaced the battery first. Then I replaced the transformer (no continuity on the output terminals) and the system powered up OK.
I had to reset the system clock to turn off one trouble code. The problem is that the trouble light stays on and indicates another trouble code: AC power loss (get a 2 after "* 2" sequence). I'm trying to figure out if there is a reset/clear that I need to do, or if perhaps there are other issues here. I removed the battery temporarily for a quick sanity check and the system was definitely getting power. Any pointers?