TV Philips G112 e/w barrel distortion

[Freddy T]

I have a Philips G112 chassis (model 29sp1798 I think) Philips TV. It has
developed what I would call barrel distortion. Vertical lines bow out
towards the edges. The closer the line to the edge the greater the bow
outwards. I hope the following picture makes sense. Although the curvature
seems worse on the bottom half compared to the top half.
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| | | | |
| | | | |
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I have gone over the e/w ccrty and have not come up with any probs,
swapping transistors and electros some small caps but nothing seems to have
helped. This set is surface mout so it isn't easy to just remove bits and
test them. ESR meter shows no problems.

Anyone have any helpfull tips?


Thanks in advance
Freddy T

 

[Phil Allison]

"Freddy T" <still.workingOn@my.New.emailAddress>

I have a Philips G112 chassis (model 29sp1798 I think) Philips TV. It has
developed what I would call barrel distortion. Vertical lines bow out
towards the edges. The closer the line to the edge the greater the bow
outwards. I hope the following picture makes sense. Although the curvature
seems worse on the bottom half compared to the top half.
| | | | |
| | | | |
| | | | |
| | | | |
| | | | |
| | | | |
I have gone over the e/w ccrty and have not come up with any probs,
swapping transistors and electros some small caps but nothing seems to
have
helped. This set is surface mout so it isn't easy to just remove bits and
test them. ESR meter shows no problems.

Anyone have any helpfull tips?

** This is the *same* problem you described in December last year ?????

That sure is a long time to be watching all fat people on TV.





........... Phil

 

[Freddy T]

"Phil Allison" <philallison@tpg.com.au> wrote in
news:2hu32eFgnu9bU1@uni-berlin.de:

"Freddy T" <still.workingOn@my.New.emailAddress


I have a Philips G112 chassis (model 29sp1798 I think) Philips TV. It
has developed what I would call barrel distortion. Vertical lines bow
out towards the edges. The closer the line to the edge the greater
the bow outwards. I hope the following picture makes sense. Although
the curvature seems worse on the bottom half compared to the top
half.
| | | | |
| | | | |
| | | | |
| | | | |
| | | | |
| | | | |
I have gone over the e/w ccrty and have not come up with any probs,
swapping transistors and electros some small caps but nothing seems
to
have
helped. This set is surface mout so it isn't easy to just remove bits
and test them. ESR meter shows no problems.

Anyone have any helpfull tips?



** This is the *same* problem you described in December last year
?????

That sure is a long time to be watching all fat people on TV.





.......... Phil

No, it is not the same problem. It is a new problem. If you read the old
thread you will notice that I found the problem and posted the cure.

Thanks
Freddy T