Tonyrn 0 Report post Posted May 30 Hi all. Converted my garage into a man den. My alarm is an SL Compact. Anyway had a PIR in there and decided to change it to a new shiny one to go with the new paint work. The older PIR had gone yellow. Disconnected old PIR reconnected new one and now alarm panel has Zones 2,3 & 4 lit up. These are PIR Zones. I think Zone 1 is the front door & Zone 5 the back door. I cant set alarm now. Btw way, (stupidly) I dint turn the power off to the alarm whilst doing the change. My question; Could I have damaged the mother board by not switching off the power? And, what would test/fix would you recommend? Share this post Link to post Share on other sites
james.wilson 445 Report post Posted May 30 I'd bet you have blown the output fuse Share this post Link to post Share on other sites
sixwheeledbeast 271 Report post Posted May 30 Blown a fuse in the main controls. When was the last time the system was serviced? Maybe worth considering having a service if it's been a while. Share this post Link to post Share on other sites
