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Topic:
Atlona AT-COMP-44M blows Samsung TV component inputs?
This thread has 8 replies. Displaying all posts.
Post 1 made on Thursday April 20, 2017 at 22:03
Ernie Gilman
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We're installing the above Atlona matrix in a restaurant that had a DirecTV receiver dedicated to each TV. The addition of cable TV to get the Dodgers game made a matrix a good idea. The house is wired with component so we took that path.

One of the TVs came on with an odd pinkish/purplish image made up of small patterns of mixed color pixels. My test TV didn't show that and a replacement worked fine. We've now connected more TVs and a second one shows a green image of the same general sort.

It's more complicated than that, but have you ever heard of anything remotely like this? With component?

The TVs are all Samsung UN40EH5300 from 2012.

Thanks!

PS I just found out before hitting the road that both TVs had the funny image from Output 3. That's bad but more sensible than having it from two different outputs!
A good answer is easier with a clear question giving the make and model of everything.
"The biggest problem in communication is the illusion that it has taken place." -- G. “Bernie” Shaw
Post 2 made on Friday April 21, 2017 at 12:08
Lowhz
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That sounds as simple as having the red and blue component cables reversed somewhere.

That sounds as complicated as RBG/YPbPr color space error somewhere.
Post 3 made on Friday April 21, 2017 at 12:24
Audiophiliac
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That sounds as simple as "Samsung is garbage" or "you have a bad output 3 on your matrix. Maybe both. It is Friday after all. :P
"When I eat, it is the food that is scared." - Ron Swanson
OP | Post 4 made on Friday April 21, 2017 at 12:33
Ernie Gilman
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On April 21, 2017 at 12:24, Audiophiliac said...
That sounds as simple as "Samsung is garbage" or "you have a bad output 3 on your matrix. Maybe both. It is Friday after all. :P

While this is usually a complete set of reasons for this problem, a) it was Thursday and TODAY is Friday, and b) the sets worked when we got there.

Lowhz,
There were no cable reversals. We watched that very carefully, then exhaustively checked cabling connections. What we got was this:

The TVs worked before we started doing this.

On the first TV:
Often but not always, green only gave us nothing. Sometimes it gave us the garbage screen (with an overall pink look). This screen had five rectangular areas across the bottom that looked different.

Sometimes when green gave us nothing, addition of EITHER red or blue gave us the garbage screen.

Use of the red cable for green out of the switch to green in on the TV gave us the same results. Use of the blue cable the same way gave us the same results.

What's most remarkable about this was that we got color out of the TV with only a green input.

Two times we got a mostly black screen with a deep purple color across the top that turned to black by halfway down the screen.

On the second TV:
Similar behavior, with these additions:
We didn't always get the garbage screen. The garbage screen had an overall greenish look.

This TV was being sent the output of a DirecTV box that worked properly on the other RVs. ) With only green, when we didn't get the garbage screen we got a nice white and blue DirecTV logo, with about a dozen vertical white lines an inch each across, from the midpoint of the TV to the top.
A good answer is easier with a clear question giving the make and model of everything.
"The biggest problem in communication is the illusion that it has taken place." -- G. “Bernie” Shaw
Post 5 made on Friday April 21, 2017 at 14:05
buzz
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On April 21, 2017 at 12:33, Ernie Gilman said...
What's most remarkable about this was that we got color out of the TV with only a green input.

This makes me wonder if one or both ends of the connection think that they are dealing with Composite video.

Two times we got a mostly black screen with a deep purple color across the top that turned to black by halfway down the screen.

If this is "walking" up the screen, it suggests some sort of gross ground loop or power supply issue.
OP | Post 6 made on Friday April 21, 2017 at 15:21
Ernie Gilman
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On April 21, 2017 at 14:05, buzz said...
This makes me wonder if one or both ends of the connection think that they are dealing with Composite video.

Well, that's an interesting thought. The TV jacks for component have a yellow ring around the green jack. That jack is to be used for plain old NTSC video or for the green of a component signal.

That leaves me to think about the signal source: The satellite receiver uses a breakout cable with G, B, R, and analog audio. It's possible that the receiver was set to 480i and not outputting component... there's a detail missed in the hurry of trying to figure things out before the dinner crowd started showing up.

Thanks for the thought.

If this is "walking" up the screen, it suggests some sort of gross ground loop or power supply issue.

C'mon, buzz, to you and to me and most people here* that's pretty blatant. It's due to 60Hz noise and the color sync frequencies being slightly different. There's none of that in this situation.





*but not all
A good answer is easier with a clear question giving the make and model of everything.
"The biggest problem in communication is the illusion that it has taken place." -- G. “Bernie” Shaw
Post 7 made on Friday April 21, 2017 at 17:21
buzz
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I recently came across a very cheap TV (I don't recall the brand, it was customer supplied by a super cheap guy who managed to save money by beating a 1.4Mb connection out of Comcast, then constantly complaining about slow Internet service) with those dual colored rings. I was not paying attention and could not get video. Look carefully at the TV's input menu. There are probably two inputs (Component and Composite) that use the same set of input jacks.
OP | Post 8 made on Friday April 21, 2017 at 22:16
Ernie Gilman
Yes, That Ernie!
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buzz, let me rephrase what you ended with: one can choose to use A component signal OR A composite signal with that TV. You can't do both without an external switcher. The TV chooses which kind of signal to display, perhaps based on the signal plugged into the yellow/green jack, or perhaps based on the presence of signals on the blue and the red inputs.

This is not on the menu, though. You plug something in, the TV chooses what to display, and it displays it.

By the way, we got a call from the restaurant today. We left that second TV connected but turned off. The manager called today to tell us the TV is working now and to ask "WTF?" That's about all we could answer with, too!
A good answer is easier with a clear question giving the make and model of everything.
"The biggest problem in communication is the illusion that it has taken place." -- G. “Bernie” Shaw
Post 9 made on Saturday April 22, 2017 at 09:02
buzz
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Ernie,

In my case there were two different selections on the TV's input menu that used the dual mode input jacks. (But wait, there's more.)

As you can imagine, my super cheap guy was using a cable box (free or cheapest available from Comcast) that had only Composite output. I used the yellow banded input and the TV's input menu presented an "A/V" input and displayed a better than expected stretched image or an image with matting bars on a 16:9 display. He was then complaining about the stretch or bars. At about this time I had noticed the detail that there were two sets of color stripes on those input jacks.

On the other side of the wall we had a full setup with a Plasma TV and a free set of Component outputs on the cable box. Since we already had a hole in the wall backing the two TV's I quickly pulled a Component cable through the hole to show what could happen if he wasn't so being so cheap.

This is where I bumped into the quirky dual use aspect of TV input jacks. As I recall, after the reconnect, the first time I went through the TV's Input menu, the Component input that I needed was not presented. This suggests that the TV attempted to second guess the signal type, if any. Similar to your experience, I struggled for a while with no picture. I don't recall exactly what transpired, but eventually a Component input was presented and things have been fine.

Perhaps the moral is -- read the directions -- wherever they are.


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