Samsung HDMI connectivity issues: cable, splitter, PC, Xbox

I was running a HDMI splitter for about a year and never had any issues.

The picture on EACH Samsung TV started getting slightly messed up.

When I would unplug EITHER TV's HDMI, the other TV's picture would improve back to normal.

Now when I use the splitter: TV ONE shows no picture. TV TWO shows an error message from my cable provider, Uverse.

When I DO NOT use the splitter and connect the devices directly to the TVs: TV TWO works fine with and HP laptop, Toshiba laptop, Xbox One, and Uverse box. TV ONE on the other hand, only works with the cable box (and the sound goes out for a few seconds about every 20 minutes). Nothing shows up on the screen when connecting either laptop. When connecting the Xbox One, the picture looks ok but it is kind of scrambled and has vertical black lines constantly scrolling from the bottom up.

The HDMI cord on TV TWO has not been changed since it seems to be working ok. On TV ONE, I switched out the HDMI cord that ran from this TV to the box, and replaced it with the one that used to run from the box to the splitter.

I have done a factory reset on TV ONE and have tried both HDMI inputs and it's still not working.

What do you guys think? I don't know much about this stuff but I'm to the point where I think it could be one of two things: TV ONE is somehow too 'weak' to recieve a more 'complex' signal. Or that 2 of the 3 original HDMI cords in use went bad around the same time and all I have done is remove one and replace it with the other when I eliminated the splitter.
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Clarification Request
I read this twice

And can't seem to find where you swapped in another splitter.

Why I would do that is it appears to be the source of HDMI troubles in your post.

Be sure to talk to the maker/seller of this splitter to see if they'll confirm or supply another.

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Thanks for the reply but like I said, when NOT using the splitter, TV ONE is still only able to recognize the cable box, notthing at all for the laptops, and not properly for the xbox.

It's currently just an HDMI cable running from the TV to the cable box. When I unplug the end from the cable box and plug into a laptop, there is nothing on the screen, when I plug it into the xbox it is scrambled. When I do the same thing on TV TWO, all work fine.

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That helped.

Remember you are keeping it secret what those TVs are.

1. I expect this to fail if there are a mix of TVs like 720 and 1080.
2. I do see this fail as HDMI includes a handshake system (copy protection) that can break splitters and more.
3. There is a known generic reset that I use to get things working if there is no hardware failure. Here it is.
-> Unplug one end of all HDMI cables. Remove power from all HDMI devices and wait 10 minutes for the HDMI chips to reset, forget the devices they synced with. Apply the AC cord, connect up what and how you want to test and re-test.

If that fails you have a hardware or cable issue.

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Ok thanks I will try that. I posted a pic that had a diagram with the tv models but I guess it didn't load.

Samsung 60” Class (60.0” Diag.) LED 6003 Series and the same/simiar model in 40", both 1080

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That reset

Is on the web if you need this vetted. I've lost count of the times....

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