TIP: Fixing Dead pixels on the JVC GY HM700 at DVinfo.net

Lou Bruno · October 27th, 2009, 03:56 PM

.WARM CAMERA FOR 30 MINUTES

.SET CAMERA TO 720 60P

.POWER-UP PLUS PUSH THE DISPLAY BUTTON AT THE SAME TIME WHILE CAMERA IS POWERING.

.PRESS....MENU PLUS FOCUS ASSIST BUTTON AT THE SAME TIME

.ADVANCE MENU WILL APPEAR

.SCROLL TO ADVANCE FUNCTION

.PUSH: SET BUTTON

.SCROLL TO THE WORD: PIXEL COMPENDET

.PUSH: SET TO EXECUTE

.NOW: PHYSICALLY EXECUTE THE PROCESS

.EXECUTING WILL FLASH THEN STOP

NO MORE DEAD PIXEL(S)

Good Luck,

Lou Bruno

Alex Humphrey · October 30th, 2009, 03:53 PM

Thanks! I'm less concerned about ordering one now... being 3 hours from the closest dealer, I would have to dedicate a day driving to and from just to fix a stuck pixel before a shoot.

Peter Erfurt · October 31st, 2009, 03:15 PM

Thanks Bruno - much appreciated!

Simon Lucas · November 1st, 2009, 10:37 AM

Quote:

Originally Posted by Lou Bruno

.EXECUTING WILL FLASH THEN STOP

NO MORE DEAD PIXEL(S)o

I don't need it just now, but does this work on the HM100, anyone know?

Robert Rogoz · November 5th, 2009, 09:45 AM

Maybe we can post this as a sticky?
Simon, it doesn't work on HM100- you'll have to send it in for service!

Lou Bruno · November 6th, 2009, 08:05 PM

Hang in there. I will get the menu sequence for the 100 if it is available....takes me awhile to figure this out...but I will try my best.

CHRIS-Can you make this thread a sticky?

Peter Lataster · November 8th, 2009, 05:33 AM

When accessing the advanced menu the camera seems to automatically detect the dead pixel(s). I couldn't enter the menu line 'pixel compen det' but after leaving the menu the dead pixel was gone. Dead simple! Maybe when there is more than one dead pixel the procedure is different?

Eric Deyerler · November 8th, 2009, 03:34 PM

It is different, but when you switch on the focus assist you see the dead-pixels highlighted.
That will help you to detect them.

Simon Lucas · November 10th, 2009, 04:29 AM

Quote:

Originally Posted by Lou Bruno

Hang in there. I will get the menu sequence for the 100 if it is available....takes me awhile to figure this out...but I will try my best.

CHRIS-Can you make this thread a sticky?

Lou, many thanks. But no hurry – I don't have any dead pixels at this time but thought it might be useful for people to know if it exists. regards simon.

Eric Deyerler · November 25th, 2009, 08:25 AM

Every fifty operation-hours double the dead pixel, now I got over 120 hours of operation, today I see a new dead-pixel - same procedure then two month ago. 70 hours without a new dead pixel, but today I shot quite 4 hours nonstop and a new dead-pixel is born.

I think the CCD isn't quite good enough. Next time I will post a picture with the detected highlighted dead pixels - helpful is to use the focus assist -so you can see easily the dead pixels.

Alex Humphrey · November 25th, 2009, 01:11 PM

Remember it's not hours of use how you get them. They are being hit by xray and other radiation from space. Most cameras are about half resolution and have so much stretching and pixelshifting as well as masking so you don't often see these problems. Higher elevations and closer to the poles you get them more often as well as durring solar storms. So if you are working or at least traveling near the poles (north and south) be prepared to do it more often. I would try to eyball it every day with a monitor before you start, but that might be overkill.

Eric Deyerler · November 25th, 2009, 01:35 PM

I don't live in the polar region (in the south of Germany - Bavaria), I don't go by airplane,
only by train, heat will be also responsible for dead pixel, because the 3ccd (each build of
two ccd's) warming up the Cam after some hours - and heat causes dead-pixel.

The last 70 fanhours I don't see the dead-pixels, but I see it today during a shot with 720p24, undercranking and slow-shutter. And I work four hours without a rest.

But I know it from other cams, is it a problem also on CMOS (?!).

Another thing is that the fan-hour that's shown in the menu, is less (in hours) then I really shot with the cam.

Derran Rootring · March 1st, 2011, 03:35 PM

Quote:

Originally Posted by Lou Bruno

.WARM CAMERA FOR 30 MINUTES

.SET CAMERA TO 720 60P

.POWER-UP PLUS PUSH THE DISPLAY BUTTON AT THE SAME TIME WHILE CAMERA IS POWERING.

.PRESS....MENU PLUS FOCUS ASSIST BUTTON AT THE SAME TIME

.ADVANCE MENU WILL APPEAR

.SCROLL TO ADVANCE FUNCTION

.PUSH: SET BUTTON

.SCROLL TO THE WORD: PIXEL COMPENDET

.PUSH: SET TO EXECUTE

.NOW: PHYSICALLY EXECUTE THE PROCESS

.EXECUTING WILL FLASH THEN STOP

NO MORE DEAD PIXEL(S)

Good Luck,

Lou Bruno

Sorry for digging up this older thread, but I have a question about getting in the advanced menu of the camera.

I've put the HM700 in the 1280x720 and 60p(HQ) and switched it off.
But the next step is a bit unclear to me. Do I have to turn the camera on while already pressing the display button and keep pressing it until the camera is completely powered up or do I have to switch the camera on and immediately after that press the display button briefly and then follow the next steps? I've tried many different combinations, but so far unsuccessfully. So I must be doing something wrong.

Mick Jenner · March 1st, 2011, 03:56 PM

Hi,

Press and hold down the display button and then power up.

Likewise press and hold the focus assist and then press the menu button.

Worked for me, hope it does for you

Mick

Derran Rootring · March 1st, 2011, 03:57 PM

Thanks Mick, will try it out!

October 27th, 2009, 03:56 PM	#1
Lou Bruno Go Cycle Join Date: Dec 2001 Location: Huntington, NY Posts: 815	TIP: Fixing Dead pixels on the JVC GY HM700 .WARM CAMERA FOR 30 MINUTES .SET CAMERA TO 720 60P .POWER-UP PLUS PUSH THE DISPLAY BUTTON AT THE SAME TIME WHILE CAMERA IS POWERING. .PRESS....MENU PLUS FOCUS ASSIST BUTTON AT THE SAME TIME .ADVANCE MENU WILL APPEAR .SCROLL TO ADVANCE FUNCTION .PUSH: SET BUTTON .SCROLL TO THE WORD: PIXEL COMPENDET .PUSH: SET TO EXECUTE .NOW: PHYSICALLY EXECUTE THE PROCESS .EXECUTING WILL FLASH THEN STOP NO MORE DEAD PIXEL(S) Good Luck, Lou Bruno __________________ Lou Bruno

November 6th, 2009, 08:05 PM	#6
Lou Bruno Go Cycle Join Date: Dec 2001 Location: Huntington, NY Posts: 815	Hang in there. I will get the menu sequence for the 100 if it is available....takes me awhile to figure this out...but I will try my best. CHRIS-Can you make this thread a sticky? __________________ Lou Bruno

November 8th, 2009, 05:33 AM	#7
Peter Lataster New Boot Join Date: Feb 2007 Location: Amsterdam, Netherlands Posts: 9	Dead pixel When accessing the advanced menu the camera seems to automatically detect the dead pixel(s). I couldn't enter the menu line 'pixel compen det' but after leaving the menu the dead pixel was gone. Dead simple! Maybe when there is more than one dead pixel the procedure is different?

March 1st, 2011, 03:56 PM	#14
Mick Jenner Major Player Join Date: Mar 2003 Location: West Sussex England Posts: 843	Re: TIP: Fixing Dead pixels on the JVC GY HM700 Hi, Press and hold down the display button and then power up. Likewise press and hold the focus assist and then press the menu button. Worked for me, hope it does for you Mick

March 1st, 2011, 03:57 PM	#15
Derran Rootring Major Player Join Date: May 2007 Location: The Netherlands Posts: 204	Re: TIP: Fixing Dead pixels on the JVC GY HM700 Thanks Mick, will try it out!

October 30th, 2009, 03:53 PM	#2
Alex Humphrey Major Player Join Date: Mar 2007 Location: california North and South Posts: 642	Thanks! I'm less concerned about ordering one now... being 3 hours from the closest dealer, I would have to dedicate a day driving to and from just to fix a stuck pixel before a shoot.

October 31st, 2009, 03:15 PM	#3
Peter Erfurt Regular Crew Join Date: Oct 2006 Location: Silkeborg Denmark Posts: 93	Thanks Bruno - much appreciated!

November 5th, 2009, 09:45 AM	#5
Robert Rogoz Major Player Join Date: Sep 2007 Location: Bellingham, WA Posts: 457	Maybe we can post this as a sticky? Simon, it doesn't work on HM100- you'll have to send it in for service!

November 8th, 2009, 03:34 PM	#8
Eric Deyerler Regular Crew Join Date: May 2009 Location: Schwabach (Germany - Bavaria) Posts: 199	It is different, but when you switch on the focus assist you see the dead-pixels highlighted. That will help you to detect them.

November 25th, 2009, 08:25 AM	#10
Eric Deyerler Regular Crew Join Date: May 2009 Location: Schwabach (Germany - Bavaria) Posts: 199	Every fifty operation-hours double the dead pixel, now I got over 120 hours of operation, today I see a new dead-pixel - same procedure then two month ago. 70 hours without a new dead pixel, but today I shot quite 4 hours nonstop and a new dead-pixel is born. I think the CCD isn't quite good enough. Next time I will post a picture with the detected highlighted dead pixels - helpful is to use the focus assist -so you can see easily the dead pixels.

November 25th, 2009, 01:11 PM	#11
Alex Humphrey Major Player Join Date: Mar 2007 Location: california North and South Posts: 642	Remember it's not hours of use how you get them. They are being hit by xray and other radiation from space. Most cameras are about half resolution and have so much stretching and pixelshifting as well as masking so you don't often see these problems. Higher elevations and closer to the poles you get them more often as well as durring solar storms. So if you are working or at least traveling near the poles (north and south) be prepared to do it more often. I would try to eyball it every day with a monitor before you start, but that might be overkill.

November 25th, 2009, 01:35 PM	#12
Eric Deyerler Regular Crew Join Date: May 2009 Location: Schwabach (Germany - Bavaria) Posts: 199	I don't live in the polar region (in the south of Germany - Bavaria), I don't go by airplane, only by train, heat will be also responsible for dead pixel, because the 3ccd (each build of two ccd's) warming up the Cam after some hours - and heat causes dead-pixel. The last 70 fanhours I don't see the dead-pixels, but I see it today during a shot with 720p24, undercranking and slow-shutter. And I work four hours without a rest. But I know it from other cams, is it a problem also on CMOS (?!). Another thing is that the fan-hour that's shown in the menu, is less (in hours) then I really shot with the cam.