Projection TV Help

[Riz]

Hi

I bought a Sony 43 inch projection TV about a month ago. It still
runs great, but has developed a quirk over the last week or so. When
I switch it off, a red dot appears in the middle of the screen and
then rapidly travels down the screen and disappears.

Please let me know if this is a fault or something normal. Any
advice or directions to helpful links would be appreciated.

Thanks

 

[David]

Not normal. Call for Sony warranty repair.

If you let it go like that it will burn that spot into the red phosphor on
the tube and it will be visible all the time.

David

"Riz" <rizwanriaz@yahoo.com> wrote in message
news:cdf5e464.0405101103.5e8e02e8@posting.google.com...

Hi

I bought a Sony 43 inch projection TV about a month ago. It still
runs great, but has developed a quirk over the last week or so. When
I switch it off, a red dot appears in the middle of the screen and
then rapidly travels down the screen and disappears.

Please let me know if this is a fault or something normal. Any
advice or directions to helpful links would be appreciated.

Thanks

 

[jakdedert]

He said the dot appears, moves, then rapidly disappears. Not intending to
be disrespectful, but is there really any danger of phosphor burn from this?

OTOH, if the symptom appeared recently, obviously something has changed....

jak

"David" <dkuhajda@locl.net.spam> wrote in message
news:40a03b09$1@news.greennet.net...

Not normal. Call for Sony warranty repair.

If you let it go like that it will burn that spot into the red phosphor on
the tube and it will be visible all the time.

David

"Riz" <rizwanriaz@yahoo.com> wrote in message
news:cdf5e464.0405101103.5e8e02e8@posting.google.com...
Hi

I bought a Sony 43 inch projection TV about a month ago. It still
runs great, but has developed a quirk over the last week or so. When
I switch it off, a red dot appears in the middle of the screen and
then rapidly travels down the screen and disappears.

Please let me know if this is a fault or something normal. Any
advice or directions to helpful links would be appreciated.

Thanks

 

[David]

Seen it before. During shutdown, the frame collapse of both vertical and
horizontal puts greater than full drive on that spot, even for a second it
will burn the phosphor fairly rapidly. Think about how fast the line was
burnt into the Mitz RPTV sets when they lost horizontal deflection and had
the failure in the crt protector.

David

"jakdedert" <jdedert@bellsouth.net> wrote in message
news:GdVnc.43610$UG2.28488@bignews2.bellsouth.net...

He said the dot appears, moves, then rapidly disappears. Not intending to
be disrespectful, but is there really any danger of phosphor burn from
this?

OTOH, if the symptom appeared recently, obviously something has
changed....

jak

"David" <dkuhajda@locl.net.spam> wrote in message
news:40a03b09$1@news.greennet.net...
Not normal. Call for Sony warranty repair.

If you let it go like that it will burn that spot into the red phosphor
on
the tube and it will be visible all the time.

David

"Riz" <rizwanriaz@yahoo.com> wrote in message
news:cdf5e464.0405101103.5e8e02e8@posting.google.com...
Hi

I bought a Sony 43 inch projection TV about a month ago. It still
runs great, but has developed a quirk over the last week or so. When
I switch it off, a red dot appears in the middle of the screen and
then rapidly travels down the screen and disappears.

Please let me know if this is a fault or something normal. Any
advice or directions to helpful links would be appreciated.

Thanks

 

[John Del]

Subject: Re: Projection TV Help
From: "jakdedert" jdedert@bellsouth.net
Date: 5/11/04 12:46 AM
Message-id: <GdVnc.43610$UG2.28488@bignews2.bellsouth.net

He said the dot appears, moves, then rapidly disappears. Not intending to
be disrespectful, but is there really any danger of phosphor burn from this?

You bet your heinie there is, and even faster depending on the intensity of the
dot.

John Del
Wolcott, CT

"I'm just trying to get into heaven, I'm not running for Jesus!"
Homer Simpson

(remove S for email reply)

 

[Jason D.]

On 11 May 2004 11:48:08 GMT, ohger1s@aol.com (John Del) wrote:

Subject: Re: Projection TV Help
From: "jakdedert" jdedert@bellsouth.net
Date: 5/11/04 12:46 AM
Message-id: <GdVnc.43610$UG2.28488@bignews2.bellsouth.net

He said the dot appears, moves, then rapidly disappears. Not intending to
be disrespectful, but is there really any danger of phosphor burn from this?

You bet your heinie there is, and even faster depending on the intensity of the
dot.

Even on regular CRT, a dot burns as quick and projector EVEN FASTER
than a snap of a fly trap, that is reason for scan loss circuits but
it can fail including the beam cut off because they are all made up of
same parts as others.

Unplug now! and get it fixed, cost of three projector CRTs are not
cheap.

Cheers,

Wizard

John Del
Wolcott, CT

"I'm just trying to get into heaven, I'm not running for Jesus!"
Homer Simpson

(remove S for email reply)