Cencom Sapphire troubleshooting

Capwesty

New Member
We have a unit in the shop with a sapphire. When in position 3 the speakers give a quiet timed bark. If you push manual, you get the siren but it is very muted, also the PA is muted. We replaced the speakers, amp, and controller with equipment from another vehicle and still have the issue. Are there any tricks we could be missing? We even ran a jumper speaker wire from the amp to the speakers with no luck.


Thanks for any info!
 

Nolines

Site Regular
not having had the chance to get my hands on the sapphire controller but noting my MPC01 controller has the volume dial on it is it possible that someone was working on the programming at the unit and accidentally set a volume control low or does it think theres supposed to be a rumbler in place?
 
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Capwesty

New Member
Thanks for the reply!

No, it has a volume control but it’s on the back and you have to insert a tech screwdriver inside to turn it.
 
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Capwesty

New Member
Yessir, we even swapped the unit, speakers, and controller from another vehicle and get the same result hahaha! Even tech support is stumped
 

Nolines

Site Regular
well when all else fails ( hands Sledgehammer ) Use This! Im guessing its well out of warranty? so you swapped out the sapphire and it still does the same thing.... wiring issue?
 
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Capwesty

New Member
Yeah it’s an older unit. We’ve got more getting geared up but they’re way late so we’re out of spares. Wiring is pretty much all we haven’t swapped yet. He’s taken the car to training for a couple days so I can’t tinker with it again yet.. I sure appreciate picking your brain a bit!
 

Nolines

Site Regular
Wish I had some much better ideas in that, best I can say is to pick the brains of one of the guys at whelen tech support, ive had a annoying wiring issue with the connector on my mpc01 that I had to order a new wiring harness to try and resolve the issue otherwise im opening it up to solder in a new power wire for it to resolve it and figure out something better...
just for the sake of technical support id dedicate 1 unit to a diagnosis panel so you can test everything outside of the controller and current setup so you know when you extend wires to those items never installed in a unit you know work 100% a piece by piece diagnostic can resolve that its not hardware and may be a power issue or a wiring or connector issue.. my thoughts
 
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Capwesty

New Member
Quick update, found the problem. Apparently the rear seat was taken out for cleaning and a screw went between the wires on re installation. Thanks again for all the help!
 

Nolines

Site Regular
BZT!!! well it happens someone drops a screw and cant find it... well the wiring for the lighting found it !! LOL Congrats!
 

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