Horizontal flicker on TV!?

[Volter]

So often, actually, more and more we get this horizontal flicker across our TV. It's a JVC 31" TV, AV-31BP6. This should be caused by a horizontal CAP, is that correct? Would anyone know which one or is there anything else involved?
Thanks.

[jwax]

Volter- I'd start with a can of freeze spray.
Selectively cool different parts to cause or cease the problem. Could be cap, IC, solder joint, connector, etc., etc.

[Bigglez]

So often, actually, more and more we get this horizontal flicker across our TV.
... Would anyone know which one or is there anything else involved?

Sure, any high voltage breakdown would glitch the raster, and appear as
horizontal flicker or flashes.

If the problem is getting worse you don't need to
spend a lot of time on the set - it will shutdown
for good once that ailing part dies. Hopefully, it
doesn't do too much damage in the process.

[Bob Scott]

What is "horizontal flicker"? Can you describe it in more detail?

[Bigglez]

What is "horizontal flicker"? Can you describe it in more detail?

Redacted

[Bob Scott]

Bigglez, please don't confuse the issue with your assumptions.

I am asking Volter, the Original Poster, for a more detailed description of what he sees.

[Bigglez]

Bigglez, please don't confuse the issue with your assumptions.

Bob Scott, please don't confuse me by asking open ended questions in a general forum.

[Volter]

Well, there are several flickers across the screen. It is not just a single line. It does not start right away but after a few minutes of running. Also, the TV is over 10 years old but the picture is certainly better then what you get from those LCDs or whatever the gov is pushing on you UNLESS you are watching a digitally processed movie especially cartoons then it looks good on those LCDs.
That is what they have being confusing you while shopping for a new TV, the picture looks crisp clean and sharp like a knife but once you connect it to a cable or anything then all the crispiness is gone!
Thanks.

[Janitor Tzap]

I would concentrate on the Vertical Section of the set.

With the back off of the set, and running.
Wait till the symptom appears.
Then listen carefully for possible arcing from the Yoke, or the High Voltage Flyback Transformer.
If you don't hear, or see any arcing when the symptom appears.
Then like jwax said:

I'd start with a can of freeze spray.
Selectively cool different parts to cause or cease the problem. Could be cap, IC, solder joint, connector,

This set is the right age for the capacitors in the Vertical Section to start failing.

Good Luck!


Signed: Janitor Tzap

[Bigglez]

Also, the TV is over 10 years old but the picture is certainly better then what you get from those LCDs or whatever the gov is pushing on you UNLESS you are watching a digitally processed movie especially cartoons then it looks good on those LCDs.
That is what they have being confusing you while shopping for a new TV, the picture looks crisp clean and sharp like a knife but once you connect it to a cable or anything then all the crispiness is gone!

Say, what? Are you drunk?

[Volter]

No, I am not drunk! I can see that, the picture on those LCDs looks terrible! And once there is a movement you can see it smudged! I am not blind!
What do you "Bigglez" watch your programs on?

[Bob Scott]

I would concentrate on the Vertical Section of the set.
Signed: Janitor Tzap

I agree with Janitor Tzap. Bright horizontal lines are usually caused by a vertical scan failure; absolutely nothing to do with horizontal circuits or high voltage.

[CeaSaR]

Volter and Bigglez,

The difference between watching SDTV (Standard Definition TV) and HDTV (High Definition TV)
on one of the new LCD tv's is like night and day, especially if you are watching a SDTV signal
when the tv is set to HD. That is why it looks so bad. In order to get the best out of the TV you
need to get the highest quality signal to the input. Most likely this has been the experience you
have had, akin to watching old 1948-1960 B&W OTA broadcast on a vintage '90's big screen. It's
rather ugly.

CeaSaR

[Bigglez]

What do you "Bigglez" watch your programs on?

One of these. Elsewhere in our home we also use one of these
And some day I'll get around to restoring one of these,
which has been stored in our garage for a while.
Although I enjoy many of the smaller offerings in my
TV museum including a one of these, and the
iconoclastic one of these, too.

[Bigglez]

No, I am not drunk! I can see that, the picture on those LCDs looks terrible! And once there is a movement you can see it smudged! I am not blind!

What got my attention was not your appraisal of HDTV LCD technology,
but your rant:

Also, the TV is over 10 years old but the picture is certainly better
then what you get from those LCDs or whatever the gov is pushing
on you UNLESS you are watching a digitally processed movie
especially cartoons then it looks good on those LCDs.

Hopefully an explanation is forthcoming..