strange behaviour on HM-700 at DVinfo.net

Mike Kujbida · June 15th, 2012, 07:34 AM

I was getting ready to do a multi-cam shoot yesterday (2 HM-750s and an HM-700) via HD-SI into a Tricaster) and the output of the 700 wasn't there upon power-up.
I could see it in the viewfinder but there was no output.
This is the second time this has happened to me so fortunately I knew how to fix it but am wondering if this has happened to anyone else.
I have to go into the camera menu, select my output format and press "Set", even though this was done the previous day during setup and the camera worked flawlessly for the first two shows.
I looked on the JVC site for any firmware updates but the most recent one is a few years old.

Chris Soucy · June 16th, 2012, 01:11 AM

Hi, Mike.................

Don't know squat about JVC cameras, but have seen (on DVinfo) a few older cams from other manufacturers giving problems with "forgetting" settings.

Seems the latest (8 years or less) have a hardwired battery (?) on a PCB somewhere which requires "topping up" on a regular basis to keep settings in some sort of temporary memory (quite how or why has me foxed as I would have thought they'd use a slightly more robust backup system, but what the F^&%).

Try plugging the camera, with a battery on board (if possible, not possible with high end Canon) , but camera turned off, into a power adapter suitable for the cam, for 24 hours, or as much as you can manage, see if it makes any difference.

Apparently, whilst it doesn't charge the (attached, if there is one ) battery it "might charge the internal one".

Windsor, huh? Born and raised (till 6) in London, the Middlesex county bit, apparently. Haven't been back in well over 50 years, can't see it happening now, unfortunately.

Regards,

CS

Mike Kujbida · June 18th, 2012, 09:36 AM

Chris, thanks for the suggestion. I'll give that a try when I can.
It happened again on Friday afternoon but on one of my 750s this time :(
I'm starting to think that it may be a problem with the Tricaster and not any of my cameras.
I've posted this question to a Tricaster forum and will report back any findings.

I'm originally from the north shore of Lake Superior but have called Windsor home since 1974.
I do miss summers that don't have temperatures and humidity that are both in the extremes.

June 15th, 2012, 07:34 AM	#1
Mike Kujbida Inner Circle Join Date: May 2005 Location: Windsor, ON Canada Posts: 2,770	strange behaviour on HM-700 I was getting ready to do a multi-cam shoot yesterday (2 HM-750s and an HM-700) via HD-SI into a Tricaster) and the output of the 700 wasn't there upon power-up. I could see it in the viewfinder but there was no output. This is the second time this has happened to me so fortunately I knew how to fix it but am wondering if this has happened to anyone else. I have to go into the camera menu, select my output format and press "Set", even though this was done the previous day during setup and the camera worked flawlessly for the first two shows. I looked on the JVC site for any firmware updates but the most recent one is a few years old.

June 16th, 2012, 01:11 AM	#2
Chris Soucy Inner Circle Join Date: Feb 2007 Location: Fairfield, Dunedin, New Zealand Posts: 3,682 Images: 18	Re: strange behaviour on HM-700 Hi, Mike................. Don't know squat about JVC cameras, but have seen (on DVinfo) a few older cams from other manufacturers giving problems with "forgetting" settings. Seems the latest (8 years or less) have a hardwired battery (?) on a PCB somewhere which requires "topping up" on a regular basis to keep settings in some sort of temporary memory (quite how or why has me foxed as I would have thought they'd use a slightly more robust backup system, but what the F^&%). Try plugging the camera, with a battery on board (if possible, not possible with high end Canon) , but camera turned off, into a power adapter suitable for the cam, for 24 hours, or as much as you can manage, see if it makes any difference. Apparently, whilst it doesn't charge the (attached, if there is one ) battery it "might charge the internal one". Windsor, huh? Born and raised (till 6) in London, the Middlesex county bit, apparently. Haven't been back in well over 50 years, can't see it happening now, unfortunately. Regards, CS

June 18th, 2012, 09:36 AM	#3
Mike Kujbida Inner Circle Join Date: May 2005 Location: Windsor, ON Canada Posts: 2,770	Re: strange behaviour on HM-700 Chris, thanks for the suggestion. I'll give that a try when I can. It happened again on Friday afternoon but on one of my 750s this time :( I'm starting to think that it may be a problem with the Tricaster and not any of my cameras. I've posted this question to a Tricaster forum and will report back any findings. I'm originally from the north shore of Lake Superior but have called Windsor home since 1974. I do miss summers that don't have temperatures and humidity that are both in the extremes.