Question about Nikon Speedlight SB-800 TTL Flash

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Nikon SB-800 Defect

Flash powers up but the ready light never comes on - batteries are fresh charged NiMN. Flash will not flash throught camera or from flas button on flash unit. Flash worked yesterday and had not even been removed from the camera.

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  • Anonymous Dec 06, 2007

    same problem was working fine and suddenly wont flash. it pwrs up but won't flash and the control panel won't light up either.

  • Anonymous Mar 18, 2014

    I'm trying to fix a friend's tiny S01 camera. Suddenly it no longer works as before. When turned on it briefly flashes a (picture?) for a fraction of a second, then displays a statement and two "buttons" on its touchscreen:

    "Card is not formatted. Format card?"

    And the two buttons are YES and NO.

    Pressing the NO brings the statement: "You may turn off the camera."

    Pressing the YES brings the statement: "Format card. All images will be deleted! OK?" and the choice of YES or NO.

    Pressing the YES brings another choice: OK or Cancel button choice.

    Pressing the OK brings the statement "Formatting" a very brief delay, and then a beep and a little red circle with the letter I in its middle. But the camera remains inoperable



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  • 97 Answers

Have you tried other batteries?

If one cell has died, there will be enough power to power up the flash, but not enough to charge it reasonably fast. It may also stop the other cells charging up properly if they are charged together. I've had this problem with poor quality rechargeables before. I think flashguns put pretty heavy demands on batteries.

Posted on Nov 09, 2007


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1 Answer

No ready light sb-800

Take it to Nikon they will be glad to help

Apr 29, 2013 | Nikon Speedlight SB-800 TTL Flash

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Bought a Nikon Speedlight SB-600 in August. Tested the flash and it fired ok. I took out the flash a few days ago to use at a graduation and the "ready" light did not come on. Consequently it did...

Hi grwcamp, Sorry to hear about it not working at the graduation. Are in the correct position (I am sure you did but, we must start someplace). Look inside, see if there is battery acid in there.
If with new/fresh batteries it still does not work call Nikon. You have a warranty on it so it should be covered.
Nikon digital 1-800-645-6689

Dec 04, 2010 | Nikon Speedlight SB-600 TTL Flash

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My sb will power on but i have no flash even when i hit the test button. I noticed it got a little warm then shut down when the problem first occured. Is it fried or fixable?

Are you using fresh batteries? Are they rechargeable batteries if so do a battery test maybe a battery is weak. With fresh batteries it still does the same thing then call Nikon 1-800-645-6689

Aug 28, 2010 | Nikon Speedlight SB-800 TTL Flash

1 Answer

Nikon SB-800 flash - needs to be reset ?? or repaired ??

Try reseting the flash itself, press and hold the "Mode" and "on/off" buttons together for 2 seconds approx...this should reset the whole flash.

If that doesn't work try unlocking it by pressing the "on/off" and "Sel" buttons together, the padlock should disappear.

With respect to the corroded contacts you just need to try and clean them as best you can...but it sounds like you have really bad contact with the battery and hence a serious voltage drop, hence the dim display and lack of the red ready light.


Sep 22, 2009 | Nikon Speedlight SB-800 TTL Flash

2 Answers

Will not show ready light , batteries complety charged...

Is the flash powering on?
Are the batteries installed correctly?
Try a fresh set of batteries.
If that does not work, you will need to send it in for service.

Jul 09, 2009 | Nikon Speedlight SB-600 TTL Flash

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Nikon speedlight sb-800


Sep 22, 2008 | Nikon Speedlight SB-800 TTL Flash

2 Answers

Ready light on my SB-800 speedlight

put in a fresh set of batteries. The ready light won't turn on until the flash capacitor is fully charged. And if your battery is weak, it can take very long (minutes!) to fill the capacitor. You still can fire the flash even it is not ready, it will just dump whatever power it stored in the capacitor.

Jun 12, 2008 | Nikon Speedlight SB-800 TTL Flash

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Nikon sb800 speedlight

The trigger circuit and flash tube needs to be replaced . If you want me to repair this contact .

Berrie Smith Camera Repair

Mar 27, 2008 | Nikon Speedlight SB-800 TTL Flash

1 Answer

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

1 Answer

Nikon SB-800 Failure

Check by testing flash that I've posted on 1/15/08

Oct 22, 2007 | Nikon Speedlight SB-800 TTL Flash

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