Hey guys:

I have a 9000 M series on my truck. I replaced my radio this morning with a new(er) one and now, my strobes won't work on my bar. My piercers (spelling??) work and so do my takedowns, alleys, and rear flashers (halogen). I have power to my control box and to the bar. I have checked my fuses on the bar and all is okay. Does anyone know how to check the strobe power pack? I'm thinking its out. Any help would be greatly appreciated!!!

Thanks in advance, Michael

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Ya really don't want to try to check the pack. You are talking around 8,000 volts at the capacitor. It WILL get your attention if you inadvertently make contact . It indeed sounds like your power pack is fried, and it can happen without blowing the fuses. Normally, you can smell it.
I made the mistake of testing a pack once, that really hurts. The bar ay not even have parts available any more. Call Whelen, they have great tech support.
Dont' know how to check power pack but I do have a power pack it's for a four strobe. how many strobes does your light have? First callwhelen and see what they say. Let me know if you need a power pack?
Ok, so now I feel kinda dumb. After working, tracing wires, and spending all afternoon on this lightbar, my Dad went and "tapped" the control box. Sometimes, I guess we just need a bigger hammer! It was just a loose wire but I'm still lost as to why everything else on that switch works. Oh well, thanks guys. Have a safe and happy Thanksgiving.
This sure sounds like one of those what was I thinking of types of things. Unless you are a whiz at electronics and have the shop manual for the thing, I strongly suggest that you let the Wheelan folks service your light bar. One slip and things that are currently working won't. Don't make things worse and give in to your desire to fix it yourself. The Wheelan folks probably are not necessarily all that good at fighting fires and providing EMS, but they sure know their way around a siren... It's generally true that you get what you pay for and those light bars aren't cheap are they? Protect your investment. Just my thoughts, though a little opinionated I must admit. Don't mean to offend you or sound mean. I don't want to see you mess around with something that has enough juice to cause cardiac issues should the R on T phenomenon surface. This by the way is when you are exposed to electricity at just the right time when your heart is going through it's PQRST cycle. Should the electrical shock occur here, your heart goes into instant ventricular fibrillation. So if you plan on still doing this job, make sure you have and AED standing by and maybe an engine company, and maybe an ambulance... Whew... now I feel better... Please think safety here MIchael. TCSS, Mike

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I agree with Michael Schlags, I was working on a strobe dash light that I knew nothing about and touched something I dont know what I touched but after I stopped screaming and using very bad words I decided not to work on strobes anymore!!
I went thru this and threw my pack away thinking it was bad, come to find out i did not have power on the flash pattern and went dumpster diving. I would check to make sure you have power on your flash patter wires. if that does not help then it may be the power supply.
Yeah, i have done the jitter bug dance several times. I would think i would learn from the previous 50 times that touching things that produce voltage is not a fun thing, but i have always been hard headed too
With the newer Whelen boxes make sure you don't have a shorted cable or bulb.it will put the box in protected shutdown.

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