Deltaseven Posted November 9, 2008 Share Posted November 9, 2008 Hi Folks, We seem to be having a large number of problems with high res faults on our PAs, across multiple sites, and for quite a while. Our standard fit is the Knight Plastics KP10 or KP10s (Grade 3 with jumper selectable resistance). They PCBs seem to be poorly soldered with large blobs of solder, and large amounts of flux around the solder points. If you meter the tamper terminals, with the spring pressed, resistance fluctuates between 30 and 550 ohms, so clearly that is where the problem lies. Anyone else having similar problems? If not, what PAs are you using (grade 3). Thanks, D7 Link to comment Share on other sites More sharing options...
james.wilson Posted November 9, 2008 Share Posted November 9, 2008 elmdene or cqr pa's here 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...
antinode Posted November 9, 2008 Share Posted November 9, 2008 Our standard fit is the Knight Plastics There is your problem. We use CQR, 0 problems. Trade Member Link to comment Share on other sites More sharing options...
ranger Posted November 9, 2008 Share Posted November 9, 2008 CQR here and no probs The above is my personal opinion and not that of my employer or anyone else. Link to comment Share on other sites More sharing options...
Russ99 Posted November 10, 2008 Share Posted November 10, 2008 CQR all the way. We have fitted about 150 plus recently on some large retail roll-outs and they have all been fine. Link to comment Share on other sites More sharing options...
Deltaseven Posted November 10, 2008 Author Share Posted November 10, 2008 Thanks all for your comments - will try to push for a change. Link to comment Share on other sites More sharing options...
9651 Posted November 11, 2008 Share Posted November 11, 2008 Elmdene here Link to comment Share on other sites More sharing options...
spider Posted November 11, 2008 Share Posted November 11, 2008 "poorly soldered with large blobs of solder, and large amounts of flux around the solder points" it might be that they have gone over to lead free solder and not increased the iron temperature ) Link to comment Share on other sites More sharing options...
lawandorder Posted November 11, 2008 Share Posted November 11, 2008 "poorly soldered with large blobs of solder, and large amounts of flux around the solder points" it might be that they have gone over to lead free solder and not increased the iron temperature ) I was wondering the same thing, I hate lead free, it just doesn't run the same. Give me full fat any day. Link to comment Share on other sites More sharing options...
diverbloke Posted November 12, 2008 Share Posted November 12, 2008 High resistance is probably thru links for resistor select. Have found using normal resistors or soldering links stops problem Link to comment Share on other sites More sharing options...
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