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Old January 2nd, 2004, 11:23 PM   #1
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Pixel burn out?

I just noticed a strange white dot burned into all my footage near the center of the screen. I couldn't see it with the camera's lcd but discovered it while I was editing and the footage was on a dark backgound. Looks like several pixels burnt out or something. Can this actually happen? Is the ccd screwed? Is this a replacement or a repair? Damn, I'm not very happy about this... :(
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Old January 3rd, 2004, 01:03 AM   #2
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Will,

I hope it's something as simple as just a tiny spot on the lens, or a filter if you were using one. If the apeture was small then the DOF would be enough to show a spot.

If not, I know that LCD makers generally have a "tolerance" for the acceptable number of "bad" pixels. I'm sure that most cameras (all brands and flavors) have at least a few and we just don't notice them amongst the compression artifacts or the stunning performances of the talent. ; )

My still digicam has a function to "map the LCD"...real meaning: it turns off the signal from the bad ones it finds. The JVC doesn't have one in our "user" menus. (But, i'm sure it's in there in the "service" menus and/or tables hidden in the depths of the camera.)

Either way, You can clean up the spot in post fairly easily especially since the spot would be in a consistant location...unlike the unfortunate spontaneous "zit" on the lead actor's nose.

be well,

G.
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Old January 3rd, 2004, 01:18 AM   #3
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I looked at it closely and it's bright and very noticable. I hoped it was some dust spec or something. Now what is the ccd made of? Is it also made with the same tech as an lcd? if so I have heard about the "acceptable allowance" of burn out, but I don't know if I want to use this camera anymore. Now that I know it's there, it's gonna drive me nuts!! Does anyone know if this is a ccd thing? Can ccd's be easily repaired or replaced?

thanks!
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Old January 3rd, 2004, 04:43 AM   #4
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Will, I'd get it repaired or replaced straight away, assuming your warranty is still active.
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Old January 4th, 2004, 07:08 PM   #5
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My JVC 500 camcorder has some dead pixels and they have a protocol for erasing or at least minimizing such spots. With DV resolutions the pixels have to be really wide (several in a row) to be noticeable. With HD, probably a single pixel burn-out is going to stick out like a sore thumb. Call the tech dept. or Ken Freed to find out what to do. My guess is you can get the block replaced. Good luck!!!!
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Old January 4th, 2004, 10:47 PM   #6
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My friend has an HD1 and it has a dead pixel. Not on the LCD panel or viewfinder, it actually burns a constant-on green pixel right into the footage.
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Old January 7th, 2004, 03:42 AM   #7
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It's called a stuck on pixel. the camera has a error correction chip thats suppose to mask errors in the image. Call JVC support, they'll have you send in the camera and realign the CCD. takes about a week.
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Old January 8th, 2004, 12:05 AM   #8
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Thanks for all the info guys! Off it goes back to Japan (yeah that's where I got it from) I hope the image will look as good as a new unblemished camera, don't know if I should demand a replacement or just have them repair it.

Thanks again everyone.
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