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HMI troubleshooting...


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#1 Duncan OBryan

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Posted 13 April 2013 - 08:02 PM

Hey guys, I don't know how I didn't come across this excellent forum before! 

 

I've been having an issue with my Strand open face (Shaula 575w, Mod. #0009). I noticed it wouldn't strike upside-down or at extreme angles, but otherwise seemed alright. It went out on a shoot a few months ago, ran for about 20min until the dp decided he wanted to go all tungsten (??) and we packed it up. It hasn't run since.

I thought it was the safety switch, since they almost never work well on older HMI heads, but I fiddled with it and make sure it was engaging correctly. The head itself has a remote start-stop feature, and simply doesn't appear to be energizing - the strike/power down switches normally light up when it's in a "ready" state. 

 

I know the ballast is in working condition, it powers up and strikes my fresnel heads just fine. Globe hours are unknown. Hobbs read 43.5hrs. 

 

Any troubleshooting thoughts? 


Edited by Duncan OBryan, 13 April 2013 - 08:05 PM.

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#2 Phil Rhodes

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Posted 13 April 2013 - 08:10 PM

I had an HMI once that needed one end of the feeder cable remaking - it's possible you've got a cable fault somewhere. If the cable is good on other heads, though, you may have to check continuity through the connector on the head itself.

 

P


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#3 Duncan OBryan

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Posted 13 April 2013 - 08:23 PM

Thank you Phil, I'll check the feeder cable. Unfortunately, it's the style that is permanently attached to the head, so It'll involve separating the reflector from the "electronics package". Hopefully easer done than said! 


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#4 Duncan OBryan

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Posted 13 April 2013 - 10:09 PM

Looks like you were right, I've only got continuity on three of seven conductors in the feeder cable... 

 

Any idea where I can get replacement cable? Safety is #1, so I want to make sure I use the right shielding/wire gauge! 


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Paralinx LLC

New Pro Video - New and Used Equipment

Rig Wheels Passport

rebotnix Technologies

Visual Products

The Slider

Gamma Ray Digital Inc

Metropolis Post

CineTape

Technodolly

Aerial Filmworks

FJS International, LLC

CineLab

Glidecam

Wooden Camera

Ritter Battery

Broadcast Solutions Inc

Abel Cine