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Arri LF/PRO Power Problem


Alastair Rae

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When using the Arri LF camera on my PRO over a fourteen-week shoot I had problems with the camera randomly switching off. I changed all cables and tried a different camera body. Optical Support in London have stripped the rig and can find no weak spots in the wiring. Has anyone had a similar experience?

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  • 2 weeks later...

Thanks for your replies Gentlemen,

The camera powered down and would then reboot. It rarely happened during shooting but rather when we were waiting to shoot or moving to the next shooting position. The problem occurred with two different camera bodies. There was no Preston involved, only a Teradek transmitter powered through the rig.

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I had similar issues with regular Alexas and REDs in combination with my Ultimate 1 electronics.

12 vdc was hard wired, so always power on the camera. The moment I switched the Ultimate 1 electronics on (28vdc inverter and some minor bits and pieces) the camera did a reboot. Probably it takes only a few milliseconds of a voltage drop to cause an off/on at the camera.

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