Click here to see examples: TV problems
I'm having lots of difficulty getting Panasonic to do something about the image problems on my TX-86PW200A. The problems are green edges on the left of people's faces (this very much depends on the background colour to the immediate left of the face) and yellow discolouration in the top left corner (occurs with very light coloured backgrounds - usually sky).
I've had two different service centre's out to look at my TV. The TV has had some thermistors changed, it's been to the service centre for eight days while they did "everything that Panasonic authorised us to do". Now the service centre is saying they can't do anything else for me (fair enough, I don't think they can).
I've contacted Panasonic (it's extremely difficult to talk to anyone but their call centre staff). I've been told that the set is within "specifications". I'm waiting for a call back from one of their "technical" guys - but I'm not that hopeful.
What do you guys think about the problems I've shown in the pictures? (link above)
Anyone have a method of taking better quality photos of a TV screen without getting moire effects?
0
Green edges on faces on my Pana TX-86PW200A
Started by AdrianW, Jan 12 2005 04:32 AM
32 replies to this topic
#2
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Posted 12 January 2005 - 05:49 AM
It is apparent that the guns of TV - are out of wack.
There are primary guns behind the tube. Red, Blue and green and they must hit the tube accurately.
I have seen identical on a mal aligned computer monitor.
Is it possible to send these photos to Panasonic. The Tv is defintely not in specifications. Something has gone wrong with the gun alignments.
DA
There are primary guns behind the tube. Red, Blue and green and they must hit the tube accurately.
I have seen identical on a mal aligned computer monitor.
Is it possible to send these photos to Panasonic. The Tv is defintely not in specifications. Something has gone wrong with the gun alignments.
DA
#3
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Posted 13 January 2005 - 04:41 AM
AdrianW, on Jan 12 2005, 10:32 PM, said:
Click here to see examples: TV problems
I'm having lots of difficulty getting Panasonic to do something about the image problems on my TX-86PW200A. The problems are green edges on the left of people's faces (this very much depends on the background colour to the immediate left of the face) and yellow discolouration in the top left corner (occurs with very light coloured backgrounds - usually sky).
I've had two different service centre's out to look at my TV. The TV has had some thermistors changed, it's been to the service centre for eight days while they did "everything that Panasonic authorised us to do". Now the service centre is saying they can't do anything else for me (fair enough, I don't think they can).
I've contacted Panasonic (it's extremely difficult to talk to anyone but their call centre staff). I've been told that the set is within "specifications". I'm waiting for a call back from one of their "technical" guys - but I'm not that hopeful.
What do you guys think about the problems I've shown in the pictures? (link above)
Anyone have a method of taking better quality photos of a TV screen without getting moire effects?
I'm having lots of difficulty getting Panasonic to do something about the image problems on my TX-86PW200A. The problems are green edges on the left of people's faces (this very much depends on the background colour to the immediate left of the face) and yellow discolouration in the top left corner (occurs with very light coloured backgrounds - usually sky).
I've had two different service centre's out to look at my TV. The TV has had some thermistors changed, it's been to the service centre for eight days while they did "everything that Panasonic authorised us to do". Now the service centre is saying they can't do anything else for me (fair enough, I don't think they can).
I've contacted Panasonic (it's extremely difficult to talk to anyone but their call centre staff). I've been told that the set is within "specifications". I'm waiting for a call back from one of their "technical" guys - but I'm not that hopeful.
What do you guys think about the problems I've shown in the pictures? (link above)
Anyone have a method of taking better quality photos of a TV screen without getting moire effects?
Hi there Adrian,
Can you please do me a favour and put down your contrast a bit and see if the green disappears around the faces.( if possible just below half way)
Also the yellow tinsh on the corner, if you can face your tv one side of the room to see if it disappears or if it moves.
Regards,
mrtv
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Posted 13 January 2005 - 05:25 AM
AdrianW,
This is a classic case of a magnetised shadow mask. When you finish viewing switch off the TV at the wall. and leave it off for at least 30 min. You will need to do this probably about half a dozen times. The set demagnetises on power up but not from the power on on the remote.
If you move the TV or rotate it the earth's magnetic field will remagnetise the tube. This is normal. Just repeat the above.
If the patches have gone but not the coloured edging you will have to get a tech to adjust the convergence.
AlanH
This is a classic case of a magnetised shadow mask. When you finish viewing switch off the TV at the wall. and leave it off for at least 30 min. You will need to do this probably about half a dozen times. The set demagnetises on power up but not from the power on on the remote.
If you move the TV or rotate it the earth's magnetic field will remagnetise the tube. This is normal. Just repeat the above.
If the patches have gone but not the coloured edging you will have to get a tech to adjust the convergence.
AlanH
#5
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Posted 13 January 2005 - 05:53 AM
alanh, on Jan 13 2005, 11:25 PM, said:
AdrianW,
This is a classic case of a magnetised shadow mask. When you finish viewing switch off the TV at the wall. and leave it off for at least 30 min. You will need to do this probably about half a dozen times. The set demagnetises on power up but not from the power on on the remote.
If you move the TV or rotate it the earth's magnetic field will remagnetise the tube. This is normal. Just repeat the above.
If the patches have gone but not the coloured edging you will have to get a tech to adjust the convergence.
AlanH
This is a classic case of a magnetised shadow mask. When you finish viewing switch off the TV at the wall. and leave it off for at least 30 min. You will need to do this probably about half a dozen times. The set demagnetises on power up but not from the power on on the remote.
If you move the TV or rotate it the earth's magnetic field will remagnetise the tube. This is normal. Just repeat the above.
If the patches have gone but not the coloured edging you will have to get a tech to adjust the convergence.
AlanH
The green edges have never gotten any better - even after the techs had it at the service centre for over a week, I think they said they'd replaced (or at least adjusted) the yolk and adjusted the degaussing cable around the tube.
The TV is still well under warranty and the service centre has "done everything we can do". One of Panasonic's "tech" guys was supposed to be returning my call today - but as expected no one called. I'll be contacting them again tomorrow.
AdrianW
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Posted 13 January 2005 - 07:48 AM
Adrian,
You have not mention what input you use but I guess it is S-video.
Have you try other input such as component or composite to see if the problem is still there?
S-video is known to cause this kind of sync problem. I have seen this many times throughout all these years with Laser Disc, S-VHS, DVD etc.
I don't know any easy way to correct this unless your DVD player have this offset adjust feature. Or a high quality cable may help, I guess.
My way of correcting this is by running Dscaler with HTPC to my pj. It has all the adjustment to make a S-video image look great. It is complicated and may not suit you, just sharing my experience.
You have not mention what input you use but I guess it is S-video.
Have you try other input such as component or composite to see if the problem is still there?
S-video is known to cause this kind of sync problem. I have seen this many times throughout all these years with Laser Disc, S-VHS, DVD etc.
I don't know any easy way to correct this unless your DVD player have this offset adjust feature. Or a high quality cable may help, I guess.
My way of correcting this is by running Dscaler with HTPC to my pj. It has all the adjustment to make a S-video image look great. It is complicated and may not suit you, just sharing my experience.
#7
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Posted 13 January 2005 - 05:15 PM
AdrianW, on Jan 13 2005, 09:53 PM, said:
alanh, on Jan 13 2005, 11:25 PM, said:
AdrianW,
This is a classic case of a magnetised shadow mask. When you finish viewing switch off the TV at the wall. and leave it off for at least 30 min. You will need to do this probably about half a dozen times. The set demagnetises on power up but not from the power on on the remote.
If you move the TV or rotate it the earth's magnetic field will remagnetise the tube. This is normal. Just repeat the above.
If the patches have gone but not the coloured edging you will have to get a tech to adjust the convergence.
AlanH
This is a classic case of a magnetised shadow mask. When you finish viewing switch off the TV at the wall. and leave it off for at least 30 min. You will need to do this probably about half a dozen times. The set demagnetises on power up but not from the power on on the remote.
If you move the TV or rotate it the earth's magnetic field will remagnetise the tube. This is normal. Just repeat the above.
If the patches have gone but not the coloured edging you will have to get a tech to adjust the convergence.
AlanH
The green edges have never gotten any better - even after the techs had it at the service centre for over a week, I think they said they'd replaced (or at least adjusted) the yolk and adjusted the degaussing cable around the tube.
The TV is still well under warranty and the service centre has "done everything we can do". One of Panasonic's "tech" guys was supposed to be returning my call today - but as expected no one called. I'll be contacting them again tomorrow.
AdrianW
Man, am I happy I was succesful in returning my 300a to The Good (for nothing) Guys albeit after a MONTH of repeatedly saying "I'm not happy with this set
".Why is it so difficult for Shops and Manufacturers to admit that you've paid good money for a crap product. They both know these things are made god knows where with the cheapest components available yet they insist on the consumer putting up with their tom-foolery.
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Posted 13 January 2005 - 10:23 PM
PKK, on Jan 14 2005, 01:48 AM, said:
Adrian,
You have not mention what input you use but I guess it is S-video.
Have you try other input such as component or composite to see if the problem is still there?
S-video is known to cause this kind of sync problem. I have seen this many times throughout all these years with Laser Disc, S-VHS, DVD etc.
I don't know any easy way to correct this unless your DVD player have this offset adjust feature. Or a high quality cable may help, I guess.
My way of correcting this is by running Dscaler with HTPC to my pj. It has all the adjustment to make a S-video image look great. It is complicated and may not suit you, just sharing my experience.
You have not mention what input you use but I guess it is S-video.
Have you try other input such as component or composite to see if the problem is still there?
S-video is known to cause this kind of sync problem. I have seen this many times throughout all these years with Laser Disc, S-VHS, DVD etc.
I don't know any easy way to correct this unless your DVD player have this offset adjust feature. Or a high quality cable may help, I guess.
My way of correcting this is by running Dscaler with HTPC to my pj. It has all the adjustment to make a S-video image look great. It is complicated and may not suit you, just sharing my experience.
#9
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Posted 13 January 2005 - 10:33 PM
mrtv, on Jan 13 2005, 10:41 PM, said:
Can you please do me a favour and put down your contrast a bit and see if the green disappears around the faces.( if possible just below half way)
Also the yellow tinsh on the corner, if you can face your tv one side of the room to see if it disappears or if it moves.
Also the yellow tinsh on the corner, if you can face your tv one side of the room to see if it disappears or if it moves.
I'm not moving the TV (it's over 80kg) and the TV has to be located where it is. I've read other threads about moving TVs to minimise the effects of the Earth's magnetic field but in the majority of cases it is just not possible to move the position of the TV unless I want the thing at a ridiculous oblique angle in the middle of the room.
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Posted 14 January 2005 - 03:13 AM
AdrianW,
Since the purity error returns, have you speakers (which are not in the set) close to it? Speakers come in two categories. Magnetically shielded ones which can be put near TVs and ones which are not. Include any on the other side of a wall behind the TV.
So you are looking for sources of magnetism. This has to be solved prior to getting the coloured edges fixed.
As for the off switch on the front of the set vs the wall socket depends on the set design. If there is a brief humming noise on switch on, that is when the demagnetising is taking place.
Post any results
AlanH
Since the purity error returns, have you speakers (which are not in the set) close to it? Speakers come in two categories. Magnetically shielded ones which can be put near TVs and ones which are not. Include any on the other side of a wall behind the TV.
So you are looking for sources of magnetism. This has to be solved prior to getting the coloured edges fixed.
As for the off switch on the front of the set vs the wall socket depends on the set design. If there is a brief humming noise on switch on, that is when the demagnetising is taking place.
Post any results
AlanH
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Posted 14 January 2005 - 08:14 AM
alanh, on Jan 14 2005, 09:13 PM, said:
AdrianW,
Since the purity error returns, have you speakers (which are not in the set) close to it? Speakers come in two categories. Magnetically shielded ones which can be put near TVs and ones which are not. Include any on the other side of a wall behind the TV.
So you are looking for sources of magnetism. This has to be solved prior to getting the coloured edges fixed.
As for the off switch on the front of the set vs the wall socket depends on the set design. If there is a brief humming noise on switch on, that is when the demagnetising is taking place.
Post any results
AlanH
Since the purity error returns, have you speakers (which are not in the set) close to it? Speakers come in two categories. Magnetically shielded ones which can be put near TVs and ones which are not. Include any on the other side of a wall behind the TV.
So you are looking for sources of magnetism. This has to be solved prior to getting the coloured edges fixed.
As for the off switch on the front of the set vs the wall socket depends on the set design. If there is a brief humming noise on switch on, that is when the demagnetising is taking place.
Post any results
AlanH
(I have the receiver at the bottom of the pile futhest away from the screen as I assume this would have the largest transformer).The front on/off switch does engage the deguassing circuit - I do get the humming noise which is rather loud in the mornings after being off all night. Plus the user manual actually states the following about the "demagnetising (degaussing) function" - "To activate this feature, simply switch your Television OFF, or into Standby for 30 minutes and then switch it back ON." (so it sounds like even using standby is OK).
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Posted 15 January 2005 - 06:19 AM
AdrianW,
I have seen sets with a faulty PTC in the degaussing circuit cause a problem like the yellow patch in the corner. A set in for repair recently was manually degaussed to clear up coloured patches but when turned OFF/ON again the patches reoccurred.
The green lines look like it may be a colour decoding problem (bit hard to tell from the picture though) are they still there if you turn the colour down?
If it was a convergence problem, the techs should have been able to adjust it out.
Peter
I have seen sets with a faulty PTC in the degaussing circuit cause a problem like the yellow patch in the corner. A set in for repair recently was manually degaussed to clear up coloured patches but when turned OFF/ON again the patches reoccurred.
The green lines look like it may be a colour decoding problem (bit hard to tell from the picture though) are they still there if you turn the colour down?
If it was a convergence problem, the techs should have been able to adjust it out.
Peter
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Posted 05 April 2005 - 04:06 PM
argh!
I'm getting this green tinging on the left side of faces too.
Who are you talking with about this problem? I'm in Melbourne and might need to start the ball rolling.
Looks like you've already been fighting.
I'm getting this green tinging on the left side of faces too.
Who are you talking with about this problem? I'm in Melbourne and might need to start the ball rolling.
Looks like you've already been fighting.
#14
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Posted 05 April 2005 - 04:12 PM
AdrianW, on Jan 12 2005, 10:32 PM, said:
The problems are green edges on the left of people's faces (this very much depends on the background colour to the immediate left of the face) and yellow discolouration in the top left corner (occurs with very light coloured backgrounds - usually sky).
Do you have the same problem on all channels? I have seen this on 70 and its a chroma delay problem. The component signals get ouit of 'sync'. The green is due to the 'eye' seeing green with overlay of a different chroma than the correct one.
If so the problem is in the STB de-coder or the TV station.
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Posted 05 April 2005 - 04:42 PM
http://www.dtvforum....showtopic=16493
It links to another thread as well
seems common issue with 200A's and even 300A's.
It links to another thread as well
seems common issue with 200A's and even 300A's.
#16
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Posted 05 April 2005 - 04:57 PM
gepm, on Apr 6 2005, 10:12 AM, said:
Do you have the same problem on all channels? I have seen this on 70 and its a chroma delay problem. The component signals get ouit of 'sync'. The green is due to the 'eye' seeing green with overlay of a different chroma than the correct one.
If so the problem is in the STB de-coder or the TV station.
If so the problem is in the STB de-coder or the TV station.
#17
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Posted 05 April 2005 - 05:18 PM
type "panasonic green tinge " into Google (www.google.com) search engine ...
interesting ....
http://snipurl.com/du8z
http://snipurl.com/du98
http://snipurl.com/du9a
Looks like this green tinge on the left of peoples faces is not uncommon.
interesting ....
http://snipurl.com/du8z
http://snipurl.com/du98
http://snipurl.com/du9a
Looks like this green tinge on the left of peoples faces is not uncommon.
#18
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Posted 05 April 2005 - 06:18 PM
Sounds like a firmware update from Panasonic might fix this problem.
http://www.avforums.com/forums/showthread.php?t=93429&page=3
I didnt even know CRT televisions had upgradeable firmware !
http://www.avforums.com/forums/showthread.php?t=93429&page=3
I didnt even know CRT televisions had upgradeable firmware !
#19
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Posted 05 April 2005 - 07:44 PM
Boy am I glad I found this thread!
I've had my Panasonic TX-86PW200A for about 6 months, great television except for that annoying GREEN TINGE ON LEFT OF PEOPLES FACES.
I was beginning to think I was the only person in Australia with this problem on this television.
You might want to have a read of AVFORUM from the UK.
Our Panasonic TX-86PW200A is called a Panasonic PD30 over there.
In particular, look through this thread:
http://snipurl.com/dubt
Lets get this fixed!
Alex
I've had my Panasonic TX-86PW200A for about 6 months, great television except for that annoying GREEN TINGE ON LEFT OF PEOPLES FACES.
I was beginning to think I was the only person in Australia with this problem on this television.
You might want to have a read of AVFORUM from the UK.
Our Panasonic TX-86PW200A is called a Panasonic PD30 over there.
In particular, look through this thread:
http://snipurl.com/dubt
Lets get this fixed!
Alex
#20
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Posted 05 April 2005 - 08:23 PM
Interesting reading. From one post:
"I've been looking at the "green edges" again on my 36PD30 and I'm coming to the conclusion that it's a software artefact - caused by the sharpening algorithms.
If you look at a green edge closely it's clear that there is not just a greenish tinge, but a distinct area of green pixels - particularly evident against more tanned skintones. Reducing the green push in the service menu makes this less noticeable but the underlying pixel colour is still green. I have also seen brown and red edges too - it depends on what the background colour is.
There's also some red and blue fringing on white objects away from the centre of the screen - but this is "merely" a convergence problem.
Maybe people who have this problem should start asking Panasonic for a firmware update. IMHO the dirty screen, convergence and colour purity problems are quality control issues that can be fixed by demanding as many exchanges as it takes to get a properly setup set. I don't think exchanging the set will cure my green edges."
"I've been looking at the "green edges" again on my 36PD30 and I'm coming to the conclusion that it's a software artefact - caused by the sharpening algorithms.
If you look at a green edge closely it's clear that there is not just a greenish tinge, but a distinct area of green pixels - particularly evident against more tanned skintones. Reducing the green push in the service menu makes this less noticeable but the underlying pixel colour is still green. I have also seen brown and red edges too - it depends on what the background colour is.
There's also some red and blue fringing on white objects away from the centre of the screen - but this is "merely" a convergence problem.
Maybe people who have this problem should start asking Panasonic for a firmware update. IMHO the dirty screen, convergence and colour purity problems are quality control issues that can be fixed by demanding as many exchanges as it takes to get a properly setup set. I don't think exchanging the set will cure my green edges."
