Question about Nikon Speedlight SB-800 TTL Flash

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SB800 firing but not syncing??

During an event my SB800 stopped working. It fires, triggers other flashes, all go off but image on camera turns out black. If I use a radio slave transmitter on my D70, flashes are triggered and image turns out beautiful - leading me to believe it really is a problem with my flash. Any suggestions?

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Re: SB800 firing but not syncing??

Hi, i had this problem also but found a way around it . what is happening, is that the sb800 preflashes when you shoot and triggers any external flash heads a fraction of a second just before the camera takes the picture. you see the lights being trigered but it the light doesn't register on camera. ( preflasing asseses the amount of light needed for the correct exposure and is a feature on newer models of flashes ). what you can do to avoid this problem is to either use a radio trigger and slave, or set your flash to su-4 mode ,which cancels the preflashing. if you press the select button on the flash .you go into the menu \ scroll up and down till you reach the icon of two flash heads . press the select again and change from " off " to su-4 .that will cancel the preflashing and your other lights will be in sync with your camera . if you get confused go to page 76 in the sb800 manual it explains everything there / hope this was helpful. good luck charles yacoub

Posted on Sep 14, 2007

Re: SB800 firing but not syncing??

I had that same problem with the SB600 and the SB 800. Solutions; get a new one. After about a year of usage the sb600 started giving me that problem. It flashes but it does not sync. It still works as a remote unit, but not mounted on the camera. The SB800 just went to a coma last weekend. No sync at all, not even as remote unit, no strobe function, just a bright flash, when triggering the test button with new fresh batteries, it flashes at max power once and takes around 7 seconds to recycle. No multiple flashes at all. I had to buy a new one.

Posted on Apr 16, 2007

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Sb800 firing without pressing shutter release

sounds like a short in one of the circuit boards, most likely one or seveal of the ribbons and boards will need to be replaced to correct the problem. Send in for repair expect to pay up to $200 for a Nikon factory overhaul

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Thats is odd.
When you hook everything up, do you turn on the flash last?
It sounds like the battery pack is giving the flash a different voltage then it should have causing incorrect readings and exposures.
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Nikon SB 800 fires but pictures reamain dark

I have 2 SB-800s. When batteries leaked in one Nikon took forever to fix it, so they eventually sent me a refurb. Then they sent my original back. Which was great, until recently it developed this problem.

Another possibly related side effect is the modeling flash does not burst -- it only fires a single (very bright) flash.

The capacitor argument sounds likely. Coincidentally I also had a problem where the flash would fire sporadically -- but that was due to scuz buildup on the contacts.

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Shop around, buy from a store where you have the face-to-face enquiry and a return facility if 'they' get it wrong.

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Sb600 doesn't fire well off the sb800

The sb600 needs to be able to see the preflashes of the sb800, so this is probably caused by one of two things.  The first thing I'd check is whether or not the light sensor on the side of the sb600 was covered, blocked, or facing away from the sb800.  I've had problems outdoors when I forgot to have the light sensor face the camera.
If the sensor was facing the camera, it is possible that the flashes didn't have a good line of sight to each other.  That normally shouldn't matter, but if there is a high ceiling and lots of people, it could be the case.  I don't know if it will help, but in any case I would recommend using a StoFen Omnibounce on the sb800 to increase the likelihood that the light finds a direction where a surface to bounce off of is found.  
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When you attach the flas to the camera can exidentli fire. This is normal, and manufacturer recomendation, turn off the flas unit before attach or deattach, prevent this fireing. Fireing when you turn the flashead is not normal. Probably the mounting foot of the flash unit can move in the hotshoe, breaking connections between the connector pins, causing exidental fiering. Always lock the locking lever of the flas, wich can prevent this unwanted movement. Also chek the hotshoe on the camera, wich should to have a "leaf spring" keeping the flash unit steady.

Dec 07, 2007 | Nikon Speedlight SB-800 TTL Flash

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