Rainer

Busy couple of days and we're leaving town through the weekend, but I'll get back to this when we return. Thanks, everyone for all the suggestions. Really hoping this can be fixed with a new cable and isn't something more serious.

Thanks, everyone.

I'm going to try getting my hands on another fiber optic cable to see if that helps.

I did try snipping the end of the current Toslink cable, but no better luck (light is definitely shining through, though). I'll polish up the sensor with some alcohol as well. Going to have to wait till tomorrow, though. Sick of shooting into the mirror.

Just took the camera out of the housing and shot it past the bare strobe sensor into the mirror. It syncs!

So does that likely just mean it's a cable issue (i.e. the cable isn't transmitting enough light)? If so, great, I'll look at trying a new cable.

Give it a try without the sync cables attached to the strobes...ie take your camera out of the housing and expose the sensor that the FO cable fixes to...take a pic pointing your camera flash to the strobe sensors. Run your test again.

If you get the same results then you'll know for sure that it is not a cable issue or vice versa....

Strobe should be syncing no matter what the shutter speed, it isn't going to be too fast with the cameras
flash popped up. This strobe should work perfectly fine with a D7000 if it is functioning correctly.

Inon introduced a smaller optical sensor with the S2000 in 2009. This upgrade came out on the Z240 and
D2000 strobes soon after(Type 4).

The fact that one strobe functions correctly whilst the other doesn't does point to it being an issue with the
2nd strobe.

The problematic strobe definitely has the larger optical sensor.

Rainer if you haven't already I'd test using only the problematic unit and have a go with the Bottom Right
switch locked down; ACC disabled.

Do I usually want ACC disabled? The dial is not depressed on the strobe that appears to be working. I'll try more trouble shooting with the problematic one with the switch locked down.

One other thing, you haven't got the cameras flash set to Red eye reduction have you? Check the info
window on top, there is a little square in the top left. If you see an eye icon in that then you'll want to switch
that off.

Just checked. Nope, red eye reduction isn't on. Any other settings you can think of that I should check?

Thanks, Jim!

I don't see it at 1/10, but it's obviously there at 1". Not sure what that shows, though.

Don't have another DSLR here to test it with.

can you decrease the shutter speed until the point you do see both strobe light up in the mirror?

Also, does it happen when using other cameras? Maybe something with a simple pre-flash?