HDMI - Power Down before Connect/Disconnect? - AVS Forum
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post #1 of 5 Old 01-27-2010, 06:41 AM - Thread Starter
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I read somewhere (sorry to be so vague) that it is very important to power down the equipment at both ends before connecting or disconnecting HDMI cables. It sounded as though one might be risking damage to the equipment. Being a cautious sort (and having fried a few laptop motherboards over cable issues), and being aware that people who say "Heck, I do it all the time" may just be lucky, I have always followed this advice. But I'm wondering: Is it really necessary? Is there a problem with the HDMI design or spec or something? Are certain brands of equipment more susceptible to damage?

Thanks!
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post #2 of 5 Old 01-27-2010, 06:53 AM
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I've never really heard that one myself and I've unhooked/hooked live equipment without problems. Probably a better place to ask this would be the "HDMI Q&A - The One Connector World" section of the forum by the way...

Matt
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post #3 of 5 Old 02-09-2010, 07:32 PM - Thread Starter
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Thanks, Matt. I wasn't aware of the HDMI forum. Will try there!
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post #4 of 5 Old 02-10-2010, 07:58 AM
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it's always recommended to power down any electronic equipment before unplugging cables. any small spark or static electricity can fry the equipment.

that being said, i have only seen that happen once in my life. i will only power down something if i am unplugging the power cables.
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post #5 of 5 Old 02-10-2010, 04:47 PM
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All recent generation TV signal sending and receiving chips for VGA, conmponent and DVi or HDMI have been "Hot Plugable" which means that you do need to power off the device at each end when connecting the cable. I am sure there are still some units out there that are not Hot Plugable or where the Hot Plugable logic may fail due to one of the interface chips not properly meeting specs for Hot Plugable.
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