Let's switch and focus on the result, performance of the 2 strobes instead of reliability & repair discussion.
It appears the 2, Inon Z240 vs Ikelite DS-125 produce different 'color warm' if you will in pictures. I read the spec of the 2 strobes's colour temperature, that doesn't tell me a whole lot but in practical use, I notice my pictures often produce different over all color balance than other who shot with Z240. As far as camera setting, most of the time underwater, I set the D80 to 'vivid' and auto white balance.
I notice particularly obvious with sea lion shot, for example:
http://www.flickr.com/photos/cadiver/3147041729/
even this trumplet fish has significant blue/grey cast along the entire body.
http://www.flickr.com/photos/cadiver/31392...57611639217303/
I notice very significant 'blue' or 'grey' color on the sea lion body instead of brownish, the real colour.
like this:
http://www.flickr.com/photos/panlai/317216...57612170133949/
or this
http://www.flickr.com/photos/diverslog/3170524464/
they are from different people but they use Z240F I believe.
Is it a factor of the strobe or some other technique I don't understand yet ? Is it incorrect exposure or is it incorrect aiming of the stobe ? Please chime in.
Thanks!