Video Assist 4K 12V power socket - which way is positive?

Getting started with a Blackmagic product? Ask questions here about setup and installation.
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Hugh Series

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Video Assist 4K 12V power socket - which way is positive?

PostWed Aug 07, 2019 4:04 pm

Hi
Newbie here. I have a Video Assist 4K without its original 12V power supply. I want to connect a third party power supply. Is the centre pin or the outer ring on the VA positive? I don't want to destroy it before I start!
Thanks.
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Greg_E

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Re: Video Assist 4K 12V power socket - which way is positive

PostFri Aug 09, 2019 2:59 pm

Center positive.
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Hugh Series

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Re: Video Assist 4K 12V power socket - which way is positive

PostWed Aug 14, 2019 2:39 pm

Thanks, then I'm afraid that mine is not working. A very brief flash when I press the power button, then blackness. Same whether connected to a BMPCC by HDMI or not. Looks like a bad ebay purchase, unless you have any suggestions. I'll try with battery when I get back home.
Hugh
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Denny Smith

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Re: Video Assist 4K 12V power socket - which way is positive

PostWed Aug 14, 2019 5:09 pm

How many volts did you connect the VA to?
Cheers
Denny Smith
SHA Productions
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Hugh Series

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Re: Video Assist 4K 12V power socket - which way is positive

PostThu Aug 15, 2019 6:05 am

Mine is 12 V, but max 17.2W. The CVP supply for it is 20W, so maybe mine is underrated. What power/current is the original BM power supply?
Thanks, Hugh
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Greg_E

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Re: Video Assist 4K 12V power socket - which way is positive

PostThu Aug 15, 2019 2:19 pm

Yes, check with battery first. It should work from 12 volts up to like 20v, I forget the actual rating but it is somewhat wide.

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