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iPak - Phase B Failed

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#1 Borna



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Posted 09 November 2008 - 10:44 PM

Hi guys, I am one of the lighting guys at school and was rigging some of the lights up, when I realised when I put lights on any ports that were Phase B none would work. I also get a message "Phase B Failed" on the LCD screen; we fixed it after about 10 minutes of fiddling with the buttons but after 5 minutes it said the same thing when we were plugging in lights.

Any help?


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#2 LSC TechSupport

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Posted 09 November 2008 - 11:09 PM


Normally the Phase fail light indicates that there is no voltage on that phase. If it coming on/off, particularly as you add more ligths, then I suspect a loose connection somewhere in your rig, either inside the dimmer rack or in the supply wiring. You really need an electrician with a multimeter to trace down where the problem is located.

To get yourself out of trouble will require re-patching and programming your show to work on the remaining 8 channels. Not easy or fun, but it is the only easy way out until you get a sparkie on site.
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Richie Mickan
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#3 PhantomD


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Posted 10 November 2008 - 08:04 AM

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#4 TheDawnOfAllWars


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Posted 23 November 2008 - 05:29 AM

Bit of a late response, but it may help others in the future.

I have found that with some old Jands dimmers (never had the issue with a LSC dimmer) a power cycle can sometimes make it happy again.

One musical a while ago we lost Phase 3 on our 3rd dimmer once every few scenes - and quick power cycle sorted it out every time...

Again, never had to try it on a LSC dimmer...
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Owen Hardman
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