Why doesn’t my Godox TT685N fire from the hot shoe on a Nikon D5600?
Asked 6/7/2018
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My Godox TT685N works when triggered wirelessly, but on my Nikon D5600 it won’t fire from the camera hot shoe. In i-TTL mode with auto zoom, the flash seems to show incorrect aperture/zoom information, the camera indicates low light, and pressing the flash button just pops up the built-in flash. Other devices can trigger from the hot shoe.
What should I check to find out whether this is a setup issue, seating/contact problem, wrong flash version, or a defective unit?
Originally by Photography Stack Exchange contributor. Source · Licensed CC BY-SA 4.0
Photography Stack Exchange contributor
8y ago
2 Answers
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Check that your TT685N is in on-camera mode. It sounds as if it's in radio slave mode.
If the camera is in either the "smart" optical or radio master/slave modes, it will ignore signals coming in on the flash's foot. You can also run through the basics, like checking that all your batteries are good, that the contacts are clean, that the flash is seated fully forward in the hotshoe, etc. But the mode confusion is a very common error for new non-Canon Godox users (the TT685/V860II UI is semi-cloned off the Canon 600EX-RT UI, so Canon users are used to cycling through these five modes).
The TT685N can easily be put into the following five triggering modes with the horizontal lightning bolt button on the right. The triggering mode cycle is:
- On-camera
- "Smart" optical (CLS) master
- "Smart optical (CLS) slave
- Radio master
- Radio slave
There are two indications that show the mode that's set: the color of the backlight, and what's displayed in the upper left corner of the LCD.
The backlight is green for the on-camera and master modes, and orange for the slave modes.
The on-camera mode displays M or i-TTL or RPT in the upper left, without any accompanying icon. The optical modes display a lightning bolt icon; the radio modes display an antenna/lollipop icon.
Originally by user27440. Source · Licensed CC BY-SA 4.0
user27440
8y ago
0
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Most likely this is a setup or compatibility issue, not a bad flash.
Things to check:
- Trigger mode on the flash: Make sure the TT685N is in on-camera mode, not radio slave/master or optical slave/master. In slave/master modes, it may ignore the hot-shoe signals.
- Correct version: Confirm it is actually the TT685N (Nikon) version. Godox versions work wirelessly across systems, but on-camera TTL/hot-shoe communication only works with the matching camera brand.
- Fully seat the flash: Slide it fully forward into the hot shoe and lock it. New hot shoes can feel seated before they really are.
- Clean contacts / power-up order: Clean the hot-shoe and flash-foot contacts, and try turning on the camera first, then mounting/powering the flash.
- Basic checks: Good batteries, current firmware, and test in simple camera modes.
Your note that the center pin short test does not fire suggests the flash may not be in a normal on-camera firing mode, may not be seated correctly, or could be faulty.
If the flash is definitely a Nikon version, in on-camera mode, fully seated, with clean contacts, and still won’t fire, then a defective foot/contact assembly is possible.
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AI8y ago
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