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Anyone repair strobe power supplys

Discussion in 'Truck & Equipment Repair' started by f250man, Oct 12, 2009.

  1. f250man

    f250man PlowSite Veteran
    Messages: 3,124

    I am looking for someone to repair or take a look at my strobe power supply it is a 90 watt 6 outlet power box and only 3 outlets are working now. Thanks Steve
  2. chuckraduenz

    chuckraduenz Senior Member
    Messages: 345

    how old is it? mfg brand? what happend prior to it going out?
  3. f250man

    f250man PlowSite Veteran
    Messages: 3,124

    the box says sp960 on it I bought it second hand so there was no real instructions with it. Thanks
  4. f250man

    f250man PlowSite Veteran
    Messages: 3,124

    Theres not anyone on here that can help or steer me in the right direction. Thanks Steve
  5. WreckerNut

    WreckerNut Junior Member
    Messages: 14

    help for power supply problem

    It helps to know the manufactuer. I think it is a whelen number, not sure. The whelen 6 outlet/ 90 watt part number is csp690. Check this and let me know if that is what it looks like:


    We use whelen and tomar on our tow trucks, and are a dealer for both compaines. Have had the best luck with those. Make sure that the problem is definately with the power supply, not a broken wire or bad connection somewhere along the line leading up to it. The snow/salt rots out the connections all the time on our trucks, especially on the amp style connectors, the deutsch style are a little more weather proof. Don't mean to state the obvious, but that's the most common problem I have run into, especially if none of the connections had dielectric grease on them when installed. That or a burnt out/busted tube. If it's not something obvious, may want to just pick up another one. The Whelen csp 690 retails for like 150 bucks give or take. Not really supposed to take 'em apart and fiddle with them, and you can get zapped hardcore when they fire if you don't completely diconnect and discharge it. In my opinion I would check all the obvious stuff, connections, power, ground, input, etc, etc, and if you still can't get it to work just pick up another one. I know spending dough sucks, but that is your easiest and safest option. We almost lost a wrecker to a bad strobe short fire. Hope that helps a little.
  6. f250man

    f250man PlowSite Veteran
    Messages: 3,124

    Well definitely not a whelen supply. And all the strobe lights still work when I plug them into the outlets that work just 3 outlets are dead. I also took it apart and looks like one of the power inverters is fried dont know if I can have someone take it out and soldier a new one in if that will work.
  7. Ketch

    Ketch Member
    Messages: 48

    Post some pictures of the old unit if you can. That'd help!
  8. WreckerNut

    WreckerNut Junior Member
    Messages: 14

    Just buy the whelen they work great and don't cost a ton
  9. f250man

    f250man PlowSite Veteran
    Messages: 3,124

    Here is the power supply. I took it apart and the center transformer looks burned up. Looking for a place to buy parts to fix it.

    Picture 010.jpg

    Picture 011.jpg
  10. suzuki0702

    suzuki0702 Senior Member
    Messages: 649

    looks like an old whelen to me f250....is there a serial number on it?
  11. scottL

    scottL PlowSite.com Addict
    Messages: 1,613

    See I was going to say it was from NOVA electronics. You might want to be CAREFUL. They generate a nasty up voltage which can put you on your tail.