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07-09-2015, 08:36 AM   #1
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Younguo flashes won't fire with K-3

I got a couple of Younguo 560 IV flashes and Younguo 560 TX (nikon version) and I can't get either the transmitter nor the 2.4ghz flashes to work, both on the camera and independently. Is there a K-3 setting I may be missing? Thanks!

07-09-2015, 08:56 AM - 2 Likes   #2
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First, follow this to set them up, should be mostly the same for Yongnuos, and see if that makes a difference:

If they're not firing at all, either they don't have batteries in (doubtful), they're defective (also doubtful you'd get a batch of bad pieces), or your shutter speed is faster than the allowed limit of 1/180 (most likely).

---------- Post added 07-09-15 at 11:00 AM ----------

After you ensure they are not all defective, you want to pair the flashes to the control unit. Basically follow this for a Yongnuo specific setup:
07-09-2015, 11:26 AM   #3
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560 TX works on my K-3. I don't recall having to set up the K-3 in any special way. You say that you can't trigger the flash even when the TX is not on the K-3 (test flash)? Do you have your channels set up properly?
07-09-2015, 12:05 PM   #4
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What is the shutter speed when trying to fire them? It won't fire if higher than 1/180.

07-09-2015, 12:22 PM - 1 Like   #5
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make sure you're at 1/180 or less
07-09-2015, 02:31 PM - 1 Like   #6
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QuoteOriginally posted by Bunch Quote
make sure you're at 1/180 or less
Ditto
07-09-2015, 04:47 PM   #7
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I got them to work at less than 1/180. Thank you, thank you, thank you!! Absolutely awesome to get such fast responses. Everyone here is so helpful. You are the best!!
07-11-2015, 03:49 AM - 1 Like   #8
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Just the explanation

1/180s is the fastest shutter speed at which both curtains of the shutter are open at the same time; this is the so-called X-sync. This allows the flash light to cover the full sensor. At e.g. 1/250s, one curtain will not be fully open at the moment that the flash fires. The result will be a picture with a dark band.

Pentax thinks that dSLR users are stupid and need to be protected against themselves

If you need a flash at higher shutter speeds, you need to use a HSS capable flash.

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