Blue dot at DVinfo.net

Kiflom Bahta · March 29th, 2007, 03:16 PM

Hi guys. My A1 have a blue dot in middle of the lens. I cleaned it several times with two different cleaners but can't get off. If i face toward bright area, i see it more and if i change the angle it disapear. Anybody got any idea what this could blue dot mean. Do i need to return the camera? THx

Eric Weiss · March 29th, 2007, 04:06 PM

if it actually on the lense..its a chip.
if its only visible on the screen, thats a dead pixle.
return it either way.

Kiflom Bahta · March 30th, 2007, 01:48 AM

It is only on the screen. So what is dead pixel? And what causes them? This sucks i was looking for smooth start!

Don Palomaki · March 30th, 2007, 04:46 AM

Is it on the LCD, viewfinder, or analog/digital or ouput from tape to a external monitor.

Kiflom Bahta · March 30th, 2007, 05:50 AM

It is on the LCD monitor

Eric Weiss · March 30th, 2007, 07:37 AM

record something and play it back on a tv.
if you see the spot on the tv from the source tape,
thats very bad.

if it's only on the lcd of the cam, the lcd has a dead pixel.
not as bad. my gl2 just got one, i deal with it.

a new cam shouldnt ship with a dead pixel.

the screen is made up of dots. each dot is a pixel.
that pixel can't display anything so it just lights up.
sometimes blue, green, white..eventually, it will go grey.

Don Palomaki · March 30th, 2007, 09:04 AM

There typically is a QA standard for LCD panels/screens that specified how many bad pixels can be present, and how close to each other they can be, and stil pass acceptance tests. While the number allowed depends on the technology, size, and mainly the price of the screen (assured perfect screens are expensive), for consumer/prosumer gear and laptop PCs it typicaly is on the order of a handfull and long as they are not clustered close together.

On page 153 of the English/NTSC manual (end of the Troubleshooting section) it lists the standad as 0.01%

Eric Weiss · March 30th, 2007, 09:14 AM

indeed. i've been shipped a few large lcd screens with a dead pixel..and even a laptop. however, my urgent needs for the gear typically outweigh the hassle of sending it back. they are usually off to the edge.

however, even a single dead pixel on the A1 lcd is unacceptable.
send it back and get a new one.

at best, its the lcd. he could have one on the ccd.
it's just not worth keeping it.

Kiflom Bahta · March 30th, 2007, 08:41 PM

This is sad, i see the blue dot on TV, when i play back the tape

Eric Weiss · March 30th, 2007, 09:16 PM

your ccd has a dead pixel.
that sucks.

return it right away.

Kiflom Bahta · March 31st, 2007, 05:48 AM

Thank you Eric

March 29th, 2007, 03:16 PM	#1
Kiflom Bahta Major Player Join Date: Feb 2007 Location: Seattle Posts: 203	Blue dot Hi guys. My A1 have a blue dot in middle of the lens. I cleaned it several times with two different cleaners but can't get off. If i face toward bright area, i see it more and if i change the angle it disapear. Anybody got any idea what this could blue dot mean. Do i need to return the camera? THx

March 30th, 2007, 04:46 AM	#4
Don Palomaki Wrangler Join Date: Sep 2001 Location: Northern VA Posts: 4,487	Is it on the LCD, viewfinder, or analog/digital or ouput from tape to a external monitor. __________________ dpalomaki@dspalomaki.com

March 30th, 2007, 09:04 AM	#7
Don Palomaki Wrangler Join Date: Sep 2001 Location: Northern VA Posts: 4,487	There typically is a QA standard for LCD panels/screens that specified how many bad pixels can be present, and how close to each other they can be, and stil pass acceptance tests. While the number allowed depends on the technology, size, and mainly the price of the screen (assured perfect screens are expensive), for consumer/prosumer gear and laptop PCs it typicaly is on the order of a handfull and long as they are not clustered close together. On page 153 of the English/NTSC manual (end of the Troubleshooting section) it lists the standad as 0.01% __________________ dpalomaki@dspalomaki.com

March 29th, 2007, 04:06 PM	#2
Eric Weiss Major Player Join Date: Mar 2007 Location: Philly,PA Posts: 360	if it actually on the lense..its a chip. if its only visible on the screen, thats a dead pixle. return it either way.

March 30th, 2007, 01:48 AM	#3
Kiflom Bahta Major Player Join Date: Feb 2007 Location: Seattle Posts: 203	It is only on the screen. So what is dead pixel? And what causes them? This sucks i was looking for smooth start!

March 30th, 2007, 05:50 AM	#5
Kiflom Bahta Major Player Join Date: Feb 2007 Location: Seattle Posts: 203	It is on the LCD monitor

March 30th, 2007, 07:37 AM	#6
Eric Weiss Major Player Join Date: Mar 2007 Location: Philly,PA Posts: 360	record something and play it back on a tv. if you see the spot on the tv from the source tape, thats very bad. if it's only on the lcd of the cam, the lcd has a dead pixel. not as bad. my gl2 just got one, i deal with it. a new cam shouldnt ship with a dead pixel. the screen is made up of dots. each dot is a pixel. that pixel can't display anything so it just lights up. sometimes blue, green, white..eventually, it will go grey.

March 30th, 2007, 09:14 AM	#8
Eric Weiss Major Player Join Date: Mar 2007 Location: Philly,PA Posts: 360	indeed. i've been shipped a few large lcd screens with a dead pixel..and even a laptop. however, my urgent needs for the gear typically outweigh the hassle of sending it back. they are usually off to the edge. however, even a single dead pixel on the A1 lcd is unacceptable. send it back and get a new one. at best, its the lcd. he could have one on the ccd. it's just not worth keeping it.

March 30th, 2007, 08:41 PM	#9
Kiflom Bahta Major Player Join Date: Feb 2007 Location: Seattle Posts: 203	This is sad, i see the blue dot on TV, when i play back the tape

March 30th, 2007, 09:16 PM	#10
Eric Weiss Major Player Join Date: Mar 2007 Location: Philly,PA Posts: 360	your ccd has a dead pixel. that sucks. return it right away.

March 31st, 2007, 05:48 AM	#11
Kiflom Bahta Major Player Join Date: Feb 2007 Location: Seattle Posts: 203	Thank you Eric