I have 2 SB-800 flash units and one works perfectly as it should. Using the same camera, I attach the other falsh (and EVEN took the new batteries out of the working one and put them into the bad one so that everything would be the same). This flash will look like its firing, ready lights on, the whole nine yards but the images are underexposed like almost black- basically like it did not fire at all. All settings, etc. appear to be the same but i was wondering if its me or the flash- out of 6 images it seems like it fires for 1 or 2 and the other 4 are black. Is there like a reset button to change back to factory settings or something??

i am using a nikon d200- i have a few and swap cameras and flashes for various jobs. You think it is a flash problem then?? Really it must be since the other works perfectly fine. i am wondering if i should send to nikon for repair. i dont want to "put a bandaid" on it correcting with camera settings as much as i just want the flash to work as it should. Thanks. i am using a nikon d200- i have a few and swap cameras and flashes for various jobs. You think it is a flash problem then?? Really it must be since the other works perfectly fine. i am wondering if i should send to nikon for repair. i dont want to "put a bandaid" on it correcting with camera settings as much as i just want the flash to work as it should. Thanks.

In that case then yes, I do think you should get a new xenon lamp for the flash or a new condenser(holds the charge for the flash to come on) for it. I believe that condenser is not charging as it should and that it is the source of the problem. A local camera tech should do the job for you at a reasonable cost.

In that case then yes, I do think you should get a new xenon lamp for the flash or a new condenser(holds the charge for the flash to come on) for it. I believe that condenser is not charging as it should and that it is the source of the problem. A local camera tech should do the job for you at a reasonable cost.