to be honest you can check the wiring in the main panel and follow the cable to the main box outside and check for nicks in the cable if thats clear then call a engineer to give the sytem a go thorough going over
chris
April 2010
Bell & strobe don't work ....... maybe (and this is just a shot in the dark) but maybe the bell and strobe are faulty.
You could get it repaired properly .... or follow Cal's suggestion and make it 10 times worse
Alarm King
April 2010
Looks like you will need an engineer it could be either faulty bell or panel or a short on the cable or even the programming might have been changed. You could try rebooting it, removing all power including battery then putting it back on and see if that fixes it.
Cal
April 2010
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