alarmcom Posted September 28, 2016 Share Posted September 28, 2016 I installed one of those door knox things from SytemQ a few weeks back to a new build. The thing is intermittently buzzing and of course the customer wont pay and System Q are hopeless. I suspect the sparks have wired in my cable routes as i have even temporary lashed cables across the floor and everything appears OK. But its intermittent so how would i know. If i fail all the mains its clear but again i cant do a prolonged test so how do i know. I asked for a second kit on supply or return to prove kit but SQ are having none of it so ive purchased a second kit and the problem persist and im stuck with kit i dont want. BTW please dont tell me i shouldn't have bought from them. Hindsight isn't going to get me paid. Anyone any experience in sorting this problem or even how to explain to the customer whats happening? Quote Link to comment Share on other sites More sharing options...
james.wilson Posted September 28, 2016 Share Posted September 28, 2016 I once built a filter to cut everything below 75Hz on a car audio system might be an option http://www.diyaudioandvideo.com/Tables/ButterworthCrossover/1stOrder/ Quote securitywarehouse Security Supplies from Security Warehouse Trade Members please contact us for your TSI vetted trade discount. Link to comment Share on other sites More sharing options...
Nova-Security Posted September 28, 2016 Share Posted September 28, 2016 intermittently buzzing at normal volume of just very low? You can filter some bits with ferrite core/beads Quote www.nova-security.co.uk www.nsiapproved.co.uk No PMs please unless i know you or you are using this board with your proper name. Link to comment Share on other sites More sharing options...
MrHappy Posted September 28, 2016 Share Posted September 28, 2016 1 hour ago, Nova-Security said: You can filter some bits with ferrite core/beads retro.... but +1 + any unsed cores to 0v alarmcon, when you used temp cables did you use the same psu ? Quote Mr Veritas God Link to comment Share on other sites More sharing options...
datadiffusion Posted September 28, 2016 Share Posted September 28, 2016 You get them with some Elmdene models Quote So, I've decided to take my work back underground.... to stop it falling into the wrong hands Link to comment Share on other sites More sharing options...
MrHappy Posted September 28, 2016 Share Posted September 28, 2016 33 minutes ago, datadiffusion said: You get them with some Elmdene models seen 'em with psu's & internal EWD however I was thinking per core- pic from ACT Quote Mr Veritas God Link to comment Share on other sites More sharing options...
james.wilson Posted September 28, 2016 Share Posted September 28, 2016 you have that many too? Quote securitywarehouse Security Supplies from Security Warehouse Trade Members please contact us for your TSI vetted trade discount. Link to comment Share on other sites More sharing options...
datadiffusion Posted September 28, 2016 Share Posted September 28, 2016 Ah right, proper hardcore Quote So, I've decided to take my work back underground.... to stop it falling into the wrong hands Link to comment Share on other sites More sharing options...
MrHappy Posted September 28, 2016 Share Posted September 28, 2016 5 minutes ago, james.wilson said: you have that many too? I've probably got beads on for single cores somewhere on stock, probably last used when enforcers where cream coloured & had no case screw I've got split cores somewhere a telephone bloke gave me at least 16yrs ago... Quote Mr Veritas God Link to comment Share on other sites More sharing options...
james.wilson Posted September 28, 2016 Share Posted September 28, 2016 so totally useless. a ce thing Quote securitywarehouse Security Supplies from Security Warehouse Trade Members please contact us for your TSI vetted trade discount. Link to comment Share on other sites More sharing options...
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