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Tv picture issue

Hi

I have a one year old Prima flat screen. The colour of the picture is
now sort of blue and purple and the picture slides down to a blank
screen with verticle lines. This is the exact same problem with the
previous TV (Different Brand) that also lasted less than a year.

The same problem presents it it is hooked up to the cable only or the
DVD only. This house is only 3 years old and I am wondering if there
is an issue that is not related to the TV.

I called Cable and they assure me there is no signal amplifier hooked
up.

Is it possible there is an electrical issue?

Bill
 
B

b

Jan 1, 1970
0
Hi

I have a one year old Prima flat screen. The colour of the picture is
now sort of blue and purple and the picture slides down to a blank
screen with verticle lines. This is the exact same problem with the
previous TV (Different Brand) that also lasted less than a year.

The same problem presents it it is hooked up to the cable only or the
DVD only. This house is only 3 years old and I am wondering if there
is an issue that is not related to the TV.

I called Cable and they assure me there is no signal amplifier hooked
up.

Is it possible there is an electrical issue?

Bill

'issue' -what's that? i think you mean 'problem' !

this is likely unrelated to your household voltage, as the fault is
too specific. normally things just die or explode if the volts are
off ;-) I assume you have a plasma or lcd Tv? if it is a CRT then it
needs degaussing in the first instance.check also the connecting leads
and try it in another room. we need to narrow down the possible causes
of this odd behaviour.....

-B
 
'issue' -what's that? i think you mean 'problem' !

this is likely unrelated to your household voltage, as the fault is
too specific. normally things just die or explode if the volts are
off ;-) I assume you have a plasma or lcd Tv? if it is a CRT then it
needs degaussing in the first instance.check also the connecting leads
and try it in another room. we need to narrow down the possible causes
of this odd behaviour.....

-B- Hide quoted text -

- Show quoted text -

Good suggestion.

I took it downstairs and not problem (not even an Issue!!!!). It can't
just be a cable issue though because when the cable was disconnected
and only the DVD player connected the picture was just as poor. Any
more thoughts?

b
 
I have a one year old Prima flat screen. The colour of the picture is
now sort of blue and purple and the picture slides down to a blank
screen with verticle lines. This is the exact same problem with the
previous TV (Different Brand) that also lasted less than a year.

Is it possible that it may be a different brand but made in the same
factory with a different name plate?
 
D

Dave

Jan 1, 1970
0
Is it possible that it may be a different brand but made in the same
factory with a different name plate?

By the same Chinese worker on the same Friday afternoon, shipped in the same
container on the same ship, distributed by the same distributor?

Simple answer in either case: Ain't friggin' likely.

But possible....
 
By the same Chinese worker on the same Friday afternoon, shipped in the same
container on the same ship, distributed by the same distributor?

Simple answer in either case: Ain't friggin' likely.

But possible....
It wouldn't have to be the same worker or shipped the same day.
My point is his problem is very specific and this specific problem
occurred in two TV's. Would it then be wrong to suggest that if these
TV's were identical then they may have an identical design or part
flaw that would show itself as an identical display problem?
 
J

JANA

Jan 1, 1970
0
In these low cost TV sets, the CRT's fail often causing loss of proper
colour tracking. Vertical lines or defects in the vertical scanning are
caused by component failure in the vertical amplifier section.

The TV would require proper troubleshooting and service to put it back in to
good working condition. I doubt it is worth it. If the TV is still under
warranty, send it back. Otherwise, you will have to go out shopping for a
new one to have a good TV set.

Stay with the big brand names, and you should have less problems. It's worth
the extra cost!

--

JANA
_____


Hi

I have a one year old Prima flat screen. The colour of the picture is
now sort of blue and purple and the picture slides down to a blank
screen with verticle lines. This is the exact same problem with the
previous TV (Different Brand) that also lasted less than a year.

The same problem presents it it is hooked up to the cable only or the
DVD only. This house is only 3 years old and I am wondering if there
is an issue that is not related to the TV.

I called Cable and they assure me there is no signal amplifier hooked
up.

Is it possible there is an electrical issue?

Bill
 
B

bz

Jan 1, 1970
0
[email protected] wrote in
Good suggestion.

I took it downstairs and not problem (not even an Issue!!!!). It can't
just be a cable issue though because when the cable was disconnected
and only the DVD player connected the picture was just as poor. Any
more thoughts?

It is possible that one of the AC phases coming into your house is not
correctly wired. There may be a poor ground/earth connection. Allowing
noise onto the power circuit. Moving from one part of the house to another
may have moved you to the other phase (in the us, 220 2 phase is brought
to the house and some outlets are fed from one phase, some from the other.

You may have a device that is putting a strong signal of some sort onto
the AC line, that signal feeding through the power supply circuits and
upsetting the vertical sync.






--
bz

please pardon my infinite ignorance, the set-of-things-I-do-not-know is an
infinite set.

[email protected] remove ch100-5 to avoid spam trap
 
B

bz

Jan 1, 1970
0
Balderdash. :)

quite possibly. :)
The OP said this is a "flat screen" but is it a CRT set? Someone else
mentioned this, but no apparent answer. If it is a CRT, sounds like
a magnetic field issue. Did you just install a megawatt stereo near
the TV?

He seemed to indicate that the problem occurred AFTER a period of time,
rather than immediately.
It would take one HECK of a magnet to 'sort of slide down' the picture.
I usually get a pretty rainbow effect with some picture distortion,
depending on where the magnet is located.

[if you want to have some fun, dig a hefty magnet out of a magnetron or old
hard drive, mount it on a rubber band, carry it around behind a CRT monitor
or TV and spin it while someone is watching the TV or working on their
computer. It is most effective if you can do this in the next room so they
don't see what you are doing. :)]

Of course, if any crop circles have appeared in his neighborhood recently,
THAT might explain where such a magnetic field could come from.
:)

It STILL sounds like something coming in on the power lines because he sees
it from the cable or from DVD only.

Maybe he is going through the same decoder box in both cases and THAT box
has a problem.




--
bz 73 de N5BZ k

please pardon my infinite ignorance, the set-of-things-I-do-not-know is an
infinite set.

[email protected] remove ch100-5 to avoid spam trap
 
M

msg

Jan 1, 1970
0
bz wrote:

[if you want to have some fun, dig a hefty magnet out of a magnetron or old
hard drive, mount it on a rubber band, carry it around behind a CRT monitor...

A neighbor tossed a recent model CRT TV onto a rock pile fact down; after
rescuing it and a cleanup and powerup, the CRT showed color distortions
where the shadow mask was dislodged. Bringing a magnet near the neck of
the CRT close to the purity magnet rings, I felt a strong 10 Hz pulsing
about five inches from the tube. Moving the magnet closer than two inches
produced pulses almost too strong to retain a grasp on the magnet.

Not having a schematic of this set, I can only conjecture on the cause.
Do recent model sets have some sort of servoed pincushion correction or
other control loop running at 10 Hz?

Regards,

Michael
 
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