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emptech

Member Since 08 Jun 2004
Offline Last Active Dec 04 2016 03:50 PM
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Posts I've Made

In Topic: FS: Canon 5DMK2 Ikelite setup, with 2 strobes, 2 dome ports, 2 flat ports, an...

04 December 2016 - 03:51 PM

If you should decide to sell the DS160 strobe, please let me know -  Jim

 

I

I was asking if you were willing to sell the DS-160 strobe by itself, not the complete system -  Jim


In Topic: FS: Canon 5DMK2 Ikelite setup, with 2 strobes, 2 dome ports, 2 flat ports, an...

30 November 2016 - 09:22 AM

If you should decide to sell the DS160 strobe, please let me know -  Jim

 

I


In Topic: Is there an Ikelite socket that fits a Sea&Sea bulkhead?

23 November 2016 - 08:32 AM

The question is, will ikelite sell the socket, I've found that for some reason there are a lot of parts they will not sell. I have had to machine my own parts sometimes. Jim

In Topic: How to disassemble Ikelite DS51 strobe

20 November 2016 - 11:45 AM

Funny you should ask, I recently had a DS160 strobe flood, thank you Delta Airlines.  Although I don't have a DS51, I'd like to share my experience with the DS160.  On my first dive recently at Bonaire, I didn't notice the small crack in the front of the strobe lens, what I did notice is that the strobe worked for a while until the electronics got wet with seawater and quit.  I thought it was the O ring leaking, the one that connects to the battery, I was wrong.

 

When I got home, I noticed what appeared to be, two slotted-head screws that were visible when the battery was removed.  They were actually nuts, each one had a tiny O ring.  Once they were removed I was able to separate the front and rear half of the housing, lots of black water ran out, ugh!  I found two cracks in the clear plastic, one view-able from the front, and the second crack under the O ring.  Taking four small screws out allowed me to take apart the lens assembly, which held the flashtube.  Looking inside the main part of the housing, I saw I think four circuit boards, all lined up in slots.  To remove them I had to remove two things, first the knob on the top which chose TTS, Full, etc.  A phillips screw was removed, and the knob pulled off, revealing a special rubber seal, kind of like an O ring.  I then unscrewed the nut inside the housing holding the electrical connector, that allowed the connector to be pulled from the housing, making room for the circuit boards to slide out.

 

I'm in the process of cleaning up the circuit boards right now, one wire broke off and I found a burned trace.  I suspect that when the unit flooded, the oscillator quit, causing full current to go through one of the transistors and inverter transformer, blowing the trace like a fuse.  Once everything is thoroughly cleaned with a tooth brush and a small brass wire brush, and after the trace is repaired, the wire soldered back, I will attempt to power up the unit.  I've worked with strobe circuits before, even used to design them many years ago, and am quite aware of how lethal they can be.  By the way, the three parallel capacitors in the flash circuit are 900 uf each at 300 VDC, so that would be 2700 uf at some working voltage below 300 VDC.

 

I'm attempting to purchase the front part from Ikelite, I'll let you know how that works.  I considered shipping this unit back to them, but the damage was so extensive, I don't think they will offer to fix it, and it may not be worth the money they want.

 

I'll try to keep you posted on the repair as it continues.

 

I don't know if any of this applies to the DS51 or not, but I suspect that the designs are similar.

 

I hope Ikelite will help me out on this and not require me to send the basket-case back to them.

 

Jim


In Topic: "Sigma 17-70mm F2.8-4 DC Macro OS HSM", which Ikelite port?

27 October 2016 - 07:37 PM

This is a replay to an old thread.  Ikelite's information on the Sigma 17-70mm F2.8-4 DC Macro OS HSM is not accurate.  I just purchased the lens thinking I would have to use the velcro trick and didn't.  They must have re-designed the lens, although it is a type 2 lens, the lens barrel diameter where the zoom gear attaches is 2.825" in diameter, will use the Ikelite #0073 zoom sleeve with no problems at all.  The overall length of the lens, from the camera to the end when extended is 4.860". 

 

I'm going to use it with an 8" dome, possibly their 5511.5 kit.

 

I've tried the 5510.45 8" dome, 5510.54 1.25" extension ring, and 5510.16 extension, and have over an inch of space between the lens and the dome, I may consider the 5511.5 kit.  I'm checking with Ikelite now.

 

I'll try to report back on my photo results.

 

Jim