Question about Nikon Speedlight SB-600 TTL Flash

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SB-600 will never be on ready

My sb-600 seems to work fine, the lcd is on and I can change setting etc but the READY light never comes on, I have reset the unit and also tried fresh batteries, nothing!

Please help!

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  • marsyas Apr 20, 2008

    Does anyone out there still fix flashes? Or would I have to send it in to Nikon?

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The capacitor may be weak, or there is a problem at the component level that is not allowing the inverter to reach full voltage.

The flash will need shop service.

Jerry G.

Posted on Apr 20, 2008

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1 Answer

I have a sb-600 flash. It works fine but it has


Try doing a reset - press the "Mode" and "On/off" buttons together for a few seconds and you go back to factory settings. Sounds like you got into some funky mode, assuming everything else is working ok.

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The weird noises could signal that the charge system is going bad, the very long warm up is not a good thing.. The flash may need to be repaired, but the cost of repairing an old SB-50 as compaired to buying a new SB-400 or Sb-600 has to be weighed. Take the flash to a local camera shop that sells nion and let them look at it.

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Looks like the condenser is not charging. Oscillator section, transformer, transistor has to be checked.

Aug 16, 2009 | Nikon Speedlight SB-600 TTL Flash

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My SB-600 Just quit firing... :(


It maybe because it overheated he flash tube, nikon flash guns use a thermal cutout, to prevent overheating, usually after approximately 30 / 40 shots, in quick succession.  It should start working again after it cools down.
If not you may need to get it checked at Nikon Service Centre. Cheers Ian

Aug 04, 2009 | Nikon Speedlight SB-600 TTL Flash

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May 12, 2009 | Nikon Speedlight SB-600 TTL Flash

2 Answers

My sb 600 fires with the camera but it seems not illuminate


Definately a settings problem. The camera will only syncronize on one specific speed. Youe best bet is to use auto. For manual, you'll have to set the shutter speed at the sync speed.

Flash Sync Speed
  • up to 1/250 X-Sync Speed
  • up to 1/8000 FP High Speed Sync
  • Red-eye reduction
    Red-eye reduction with slow sync
    Rear-curtain sync
    Slow sync
    Front-curtain sync (normal) Flash Sync Modes
  • 1) i-TTL: TTL flash control by 1,005-pixel RGB sensor, built-in flash, SB-800, SB-600, SB-400: i-TTL balanced fill-flash and standard i-TTL flash
    2) AA (Auto Aperture-type) flash: Available with SB-800 used with CPU lens
    3) Non-TTL Auto: Available with Speedlights such as SB-800, 28, 27, and 22S
    4) Range-priority manual flash; available with SB-800 Flash Control
  • Mar 13, 2009 | Nikon Speedlight SB-600 TTL Flash

    1 Answer

    Sb600 display fine, but no longer flashes


    Your flash has a bad flash tube . make sure the batteries are in corectly and youhave a ready red light .

    Nov 08, 2008 | Nikon Speedlight SB-600 TTL Flash

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    Sb 600 under exposure.


    You probably haven't changed the camera and/or flash back to TTL mode from wireless mode.  Make sure they are both set to TTL, not commander mode and you should be fine.  Note that the LCD on the flash will indicate which mode it is with a little graphic.  On the D70 you had to switch between TTL and Commander mode to set it up to work using the built in flash as the commander, so you just have to switch back.

    Jan 21, 2008 | Nikon Speedlight SB-600 TTL Flash

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    SB-600 Ready Light Won't Come On When Mounted on D-40X


    Check that all the batteries are functioning properly, and that they have been inserted in the proper direction.


    Jerry G

    Dec 11, 2007 | Nikon Speedlight SB-600 TTL Flash

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