I have a 65" Samsung TV, model UN65JS850DFXZA, which I purchased from Costco back in 2015. Over the past year or so, I have had an increasingly frequent color problem where, when I turn the TV on sometimes, the colors are overly vibrant, the blacks are too black and the whites are too white, all resulting in a substantial loss in color/clarity.
I've been able to solve the problem temporarily by disconnecting the One Connect Mini and re-connecting it. I wonder if this box is going bad, or maybe just the cable itself?
Anyone seen this before?
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I think perhaps you misunderstand the problem.
When this problem isn't occuring, the picture looks fine.
When the problem occurs, I disconnect and reconnect the One Connect Mini and the picture goes back to normal.
FWIW, I did adjust the picture settings myself when I first got the TV.
Maybe it's my fault for not explaining the problem well enough.
Imagine the exact same static image source, such as a UI view of multiple apps, like the "home" screen for a game console, etc...
When things work as expected, the picture looks wonderful.
When there is a problem, the colors look over-saturated, the blacks are too dark, the whites are too bright and image details are lost.
Unplugging the One Connect Mini and reconnecting it fixes the problem.
For years, there was no problem.
I don't understand how calibration could have anything to do with this. The values have not changed since I set them, and the values are exactly the same whether I have the problem or not.
These are the settings I used:
j/k...j/k. the ones that steal the one sock out of the pair in the dryer so you end up with pesky left overs.. haha!!!
I am clearly doing a bad job of explaining the problem.
The problem only occurs when I turn on the TV sometimes. Not everytime I turn on the TV, just once in a rare while. In most cases, the TV has been off for many hours. Disconnecting and reconnecting the One Connect Mini always fixes it, which makes me 99% certain this is a hardware problem. Since replacing the One Connect Mini is much cheaper than replacing the entire TV, I'm going to just buy a new one ($150 or so I think) and see how it goes.
For what it's worth, I've never experienced any of the problems you describe. The One Connect Mini has always only had a single connection on HDMI 1.