Strange blue "haze" on right border of Sony's BRAVIA

I have Bravia KDV-32V2500 model. Everything works perfect but I
started to notice some bluish haze in an upper right corner of the LCD
display. It is visible in grayish, blue and B/W scenes. It is not very
noticeable but I am afraid it will maybe deteriorate by time... It is
not mura clouds because it is not visible in dark places nor when
entire picture is black. It is only visible during mentioned picture
conditions and looks like right corner of the screen (and few inches
below along with right border) is slightlh darker with a blue tone
than the rest of other screen.

Also, I noticed that, when I turn TV on after long time of
inoperability (e.g. in the morning), picture is pretty dark while that
upper right corner is brighter. Graduatelly (mostly in 10-15 minutes)
everything is back to normal - like TV need to "warm up" (except
"bluish haze" that exists constantly).

Anybody has idea what that might be? Maybe LCD lighting is there and
that is normal artefact of LCD "lamp" (TV is warmer at that part that
at the rest of box) or maybe this is something else?

Does altering the backlight level change it? If so, faulty backlight?

On Sun, 8 Jun 2008 10:24:00 -0700 (PDT),
wrote:

I have Bravia KDV-32V2500 model. Everything works perfect but I
started to notice some bluish haze in an upper right corner of the LCD
display. It is visible in grayish, blue and B/W scenes. It is not very
noticeable but I am afraid it will maybe deteriorate by time... It is
not mura clouds because it is not visible in dark places nor when
entire picture is black. It is only visible during mentioned picture
conditions and looks like right corner of the screen (and few inches
below along with right border) is slightlh darker with a blue tone
than the rest of other screen.

Also, I noticed that, when I turn TV on after long time of
inoperability (e.g. in the morning), picture is pretty dark while that
upper right corner is brighter. Graduatelly (mostly in 10-15 minutes)
everything is back to normal - like TV need to "warm up" (except
"bluish haze" that exists constantly).

Anybody has idea what that might be? Maybe LCD lighting is there and
that is normal artefact of LCD "lamp" (TV is warmer at that part that
at the rest of box) or maybe this is something else?

Sounds like the fluorescent tube is near the end of it's life and not
lighting up uniformly.

wrote in message
...
I have Bravia KDV-32V2500 model. Everything works perfect but I
started to notice some bluish haze in an upper right corner of the LCD
display. It is visible in grayish, blue and B/W scenes. It is not very
noticeable but I am afraid it will maybe deteriorate by time... It is
not mura clouds because it is not visible in dark places nor when
entire picture is black. It is only visible during mentioned picture
conditions and looks like right corner of the screen (and few inches
below along with right border) is slightlh darker with a blue tone
than the rest of other screen.

Also, I noticed that, when I turn TV on after long time of
inoperability (e.g. in the morning), picture is pretty dark while that
upper right corner is brighter. Graduatelly (mostly in 10-15 minutes)
everything is back to normal - like TV need to "warm up" (except
"bluish haze" that exists constantly).

Anybody has idea what that might be? Maybe LCD lighting is there and
that is normal artefact of LCD "lamp" (TV is warmer at that part that
at the rest of box) or maybe this is something else?

On 8 lip, 19:42, Java Jive wrote:
Does altering the backlight level change it? If so, faulty backlight?

Slightly but it is still noticeable. Although it is really barely
noticeable.

On 8 lip, 20:41, "Agamemnon" wrote:
Sounds like the fluorescent tube is near the end of it's life and not
lighting up uniformly.

Tube fault is related to "blue haze effect" or brightness problem that
occurs (as I mentioned) after turning TV on?
TV is not older than year and still under warranty! Can't believe that
tube is already near the end!

What, already? The set cannot be that old surely, unless its been on an
accelerated life test!

Sounds to me like the tight bonding between the light and back of screen is
not as, um tight there and with heat it moves about affecting the colour
balance.

Brian

--
Brian Gaff....Note, this account does not accept Bcc: email.
graphics are great, but the blind can't hear them
Email:
__________________________________________________ __________________________________________________ __________


"Agamemnon" wrote in message
...
Sounds like the fluorescent tube is near the end of it's life and not
lighting up uniformly.

wrote in message
...
I have Bravia KDV-32V2500 model. Everything works perfect but I
started to notice some bluish haze in an upper right corner of the LCD
display. It is visible in grayish, blue and B/W scenes. It is not very
noticeable but I am afraid it will maybe deteriorate by time... It is
not mura clouds because it is not visible in dark places nor when
entire picture is black. It is only visible during mentioned picture
conditions and looks like right corner of the screen (and few inches
below along with right border) is slightlh darker with a blue tone
than the rest of other screen.

Also, I noticed that, when I turn TV on after long time of
inoperability (e.g. in the morning), picture is pretty dark while that
upper right corner is brighter. Graduatelly (mostly in 10-15 minutes)
everything is back to normal - like TV need to "warm up" (except
"bluish haze" that exists constantly).

Anybody has idea what that might be? Maybe LCD lighting is there and
that is normal artefact of LCD "lamp" (TV is warmer at that part that
at the rest of box) or maybe this is something else?

On 9 lip, 09:58, "Brian Gaff" wrote:
What, already? The set cannot be that old surely, unless its been on an
accelerated life test!

I dont' know... Everything is possible but I doubt it is used in any
way by anybody before me.

Sounds to me like the tight bonding between the light and back of screen is
not as, um tight there and with heat it moves about affecting the colour
balance.

Is fluorescent lamp placed at that, right top corner on Bravia?

"Blue haze" is visible constantly - even when TV is cold (just turned
on after night, for example). But, when it is cold, picture is darker
with visible "backlight leak" (whiter spot at top right corner -
visible only in 4:3 mode when that part of screen is black ) that
graduatelly vanish and picture become normal bright as TV warms up
(10-15 minutes or even less is needed to get perfect picture). Even
during that time, when I stretch to widescreen, "blue haze" is there -
top right and few inches along right border.
But, as I said - it is vissible only in specific picture conditions -
when picture is B&W it can be seen, or if there is gray, blue colors
at that part of screen. If screen is bright white, red, green etc....
it is not visible. I played with settings and noticed that when I
change color intensity, it vanish for a while but come back - for
example, it is seen even if color is completelly reduced to B&W but
when I increased color to max, it dissapeared for a while but then
come back again after few minutes... I tested on the same B&W clip
from DVD. Very interresting. (I forget to mention that this problem
occurs no matter what I watch - DVD, digital or analogue TV signal,
VCR... so problem is in TV itself, not in some external signal)

Also, when it is there, it is still not very visible and can't be
spotted unless you know what to look in right picture condition. So,
it is not annoying for now but maybe it might get worse...

Well, if it is leak due to nontight bonding, I can live with it. I
just hope that tube is not near the end...

"Brian Gaff" wrote in message
...
What, already? The set cannot be that old surely, unless its been on an
accelerated life test!

Sounds to me like the tight bonding between the light and back of screen
is not as, um tight there and with heat it moves about affecting the
colour balance.

If that were the case the surfaces would move due to ambient room
temperature and the effect would be unpredictable and would disappear in a
warm room. The description given says the same thing happens all the time.
The blue haze disappears after the TV has been on for 15 minuets. That
suggests that it's the tube or the tube activation electronics which is
taking time to reach operating temperature and ionisation levels. The tube
starting coil might need replacing if it is not the tube itself. Either way,
it is a defect and if the TV is still under guarantee Sony have to fix it.


Brian

--
Brian Gaff....Note, this account does not accept Bcc: email.
graphics are great, but the blind can't hear them
Email:
__________________________________________________ __________________________________________________ __________


"Agamemnon" wrote in message
...
Sounds like the fluorescent tube is near the end of it's life and not
lighting up uniformly.

wrote in message
...
I have Bravia KDV-32V2500 model. Everything works perfect but I
started to notice some bluish haze in an upper right corner of the LCD
display. It is visible in grayish, blue and B/W scenes. It is not very
noticeable but I am afraid it will maybe deteriorate by time... It is
not mura clouds because it is not visible in dark places nor when
entire picture is black. It is only visible during mentioned picture
conditions and looks like right corner of the screen (and few inches
below along with right border) is slightlh darker with a blue tone
than the rest of other screen.

Also, I noticed that, when I turn TV on after long time of
inoperability (e.g. in the morning), picture is pretty dark while that
upper right corner is brighter. Graduatelly (mostly in 10-15 minutes)
everything is back to normal - like TV need to "warm up" (except
"bluish haze" that exists constantly).

Anybody has idea what that might be? Maybe LCD lighting is there and
that is normal artefact of LCD "lamp" (TV is warmer at that part that
at the rest of box) or maybe this is something else?

On 9 lip, 13:40, "Agamemnon" wrote:

If that were the case the surfaces would move due to ambient room
temperature and the effect would be unpredictable and would disappear in a
warm room. The description given says the same thing happens all the time.
The blue haze disappears after the TV has been on for 15 minuets. That
suggests that it's the tube or the tube activation electronics which is
taking time to reach operating temperature and ionisation levels. The tube
starting coil might need replacing if it is not the tube itself. Either way,
it is a defect and if the TV is still under guarantee Sony have to fix it.

No no... I think my poor English cause misunderstunsing... Blue haze
stays constantly on screen. It does not dissapear after 15 minutes
when TV is on. When TV is turned ON after longer period of inactivity,
screen is darker with bright spot at top right corner (visible only if
picture is dar at that spot). Blue haze is also there. That lasts for
10-15 minutes. During that period, screen become normally bright,
light spot dissaperas but blue haze stays where it is.

wrote in message
...
I have Bravia KDV-32V2500 model. Everything works perfect but I
started to notice some bluish haze in an upper right corner of the LCD
display. It is visible in grayish, blue and B/W scenes. It is not very
noticeable but I am afraid it will maybe deteriorate by time... It is
not mura clouds because it is not visible in dark places nor when
entire picture is black. It is only visible during mentioned picture
conditions and looks like right corner of the screen (and few inches
below along with right border) is slightlh darker with a blue tone
than the rest of other screen.

Also, I noticed that, when I turn TV on after long time of
inoperability (e.g. in the morning), picture is pretty dark while that
upper right corner is brighter. Graduatelly (mostly in 10-15 minutes)
everything is back to normal - like TV need to "warm up" (except
"bluish haze" that exists constantly).

Anybody has idea what that might be? Maybe LCD lighting is there and
that is normal artefact of LCD "lamp" (TV is warmer at that part that
at the rest of box) or maybe this is something else?



As an aside:

I had a 14 inch Sony Trinitron from the late 70s that lasted at least 18
years!

My present Sony Vega CRT widescreen TV has lasted 7 years of daily use so
far, so I'd expect it to live for another decade (although I'd sort of be
glad to liberate the Metres Squared of space it wastes).

These new technologies seem fragile and life-limited in comparison.

wrote in message
...
On 9 lip, 13:40, "Agamemnon" wrote:

If that were the case the surfaces would move due to ambient room
temperature and the effect would be unpredictable and would disappear in
a
warm room. The description given says the same thing happens all the
time.
The blue haze disappears after the TV has been on for 15 minuets. That
suggests that it's the tube or the tube activation electronics which is
taking time to reach operating temperature and ionisation levels. The
tube
starting coil might need replacing if it is not the tube itself. Either
way,
it is a defect and if the TV is still under guarantee Sony have to fix
it.

No no... I think my poor English cause misunderstunsing... Blue haze
stays constantly on screen. It does not dissapear after 15 minutes
when TV is on. When TV is turned ON after longer period of inactivity,
screen is darker with bright spot at top right corner (visible only if
picture is dar at that spot). Blue haze is also there. That lasts for
10-15 minutes. During that period, screen become normally bright,
light spot dissaperas but blue haze stays where it is.

Sounds like a defective fluorescent tube. The bright spot could be due to
some kind of banding effect in the tube which goes away when it warms up.