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Member Since 16 Dec 2005
Offline Last Active Jul 31 2015 09:29 AM

Posts I've Made

In Topic: Drowned Inon Z240 - anything worth salvaging?

31 July 2015 - 09:30 AM

Go ahead and test... :) 


Seriously, I think the yellow o-ring is way too thick. It may fit into the outer cap, but if you look at the space it has to seal at the strobe  - "inner" battery cap (with the contacts) to the strobe compartment - it will not fit.  And with the much thinner H2O o-ring the cap can be screwed down just neough to give a seal with the yellow o-ring. If you put a thicker o-ring into the cap you may loose this seal.

In Topic: Drowned Inon Z240 - anything worth salvaging?

29 July 2015 - 07:20 AM



unfortunately I do not have a proper ruler to measure the o-ring, but is has been said it is "size 130" - whatever this means (does not help much if I tell you it is "approximately 3mm*47mm" or so...). I bought the o-ring without the knob extensions on a dive show; I remember the dimsions were NOT imprinted on the package - no wonder, they sold it with some 1000% margin!


So I am not the only one who managed to flood an Inon due to a twisted o-ring. Since I use the second o-ring I did not have any problems, but I triple check the main o-ring.


Do you still have your drowned Inon? If so, maybe you are the one who could test the reliability of the second o-ring: Remove the yellow main o-ring and use the second o-ring alone on a deep and a shallow dive. Then check the battery compartment. Would be nice to hear your results! But also feel free to do that with your new Inon - no risk, no fun!


Regards, Jock

In Topic: Drowned Inon Z240 - anything worth salvaging?

15 July 2015 - 09:28 AM

Yes, BUT: If saltwater comes in contact with the batteries, they release gas, pressure is built up, and this pressure pushes the corrosive cocktail into the strobe. Happened to one of my Z240s. I was lucky: I disassembled the strobe as far as I could, gave it a good freshwater rinse, let it dry  - and alas, it has been working for more than two years now.


Had the same problem - a twisted o-ring that I did not notice. My fault, of course, but the Inon solution of sealing the battery compartment is less than ideal (IMHO).


Storker, for the next Inon you might want to invest into a second o-ring that you put into the cap before you dive (pics from h2o-tools.de):

In Topic: Olympus OM-D E-M5 and TTL-Problems (Inon / Sea&Sea)

15 June 2015 - 03:23 AM

Thanks Bill,


I will leave for a non-diving vacation (shame on me...) on Friday, and right now I do not have enough time to post my test results for a comparison. But I will do so when I am back in three weeks.



In Topic: Olympus OM-D E-M5 and TTL-Problems (Inon / Sea&Sea)

13 June 2015 - 10:01 AM



thanks for your thoughts, but I do have problems with my YS110a AND both of my Z240 V.4 with optical triggering. So all three have a bad optical sync system? Hmmm.


The Olympus does not have an option for hard-wiring the strobes, so that is why i tried the external Heinrichs-Weikamp converter. If you do not know it: It is OPTICALLY triggered and sends the signals via cable to the electrical port of the strobes. Unfortunately, the old internal converter (that fits to the cameras hot shoe) does not work with the latest Oly cameras; I confirmed this with the heinrichs-Weikamp office; and they told me they would not produce an updated version.