Chromecast 1 Device Not Displaying Image on Technika TV After Switch from Panasonic TV

Hello.

I have a Chromecast 1 device.
The problem is that for some reason it stopped sending the image to my Technika TV. Previously it worked without any problems.
The problem occurred when I "translated" Chromecast from another TV, with which it worked properly.
It worked flawlessly on the Panasonic TV, it previously worked on the Technika TV, but now it doesn't work.
When, for example, I want to upload an image via YouTube, it switches to HDMI, but there is a black screen with a countdown and a message about no signal,
I checked the HDMI inputs, they work well, connecting via HDMI allows you to display the image from the laptop.
I have already reset the Chromecast device by holding the button.
I also restored the TV to factory settings.
Please help, what could be the problem?
Can the HDMI ports be damaged despite the image being transmitted from the laptop?
Let me tell you that I use the Internet on my phone. I use it to create a hotspot.

And if you go back to Panasonic, does it work?

Yes, it works on Panasonic. However, I noticed that it works on Panasonic TV only with one HDMI 2 port, on the others it sees no image, HDMI 1 and HDMI 3 without image.
Is there any possibility that the device was somehow remembered only assigned to this port?
Maybe I'll try with a different Google account. Because I don't know anymore.

Can anyone give me a hint? I'm out of ideas.

How many HDMI ports do you have in Technika? What model is it?

I have 2 HDMI ports in it, the model is:

And when you plug Chromecast into HDMI, what do you see on the TV screen when you select HDMI?

black screen with time countdown and no signal message,

I already wrote this in the first post when asking.

Check with another charger/cable, do not take power from the TV, but from the socket. Also, try resetting your Google ChromeCast again to make sure you did it correctly. The problem may also be in the TV software.

What about disconnecting the TV from the mains for at least a dozen or so minutes?

Thank you very much for your interest.
In response to supporting questions.
I turned off the TV many times. I reset chromcast. Many times. After the reset, a message appeared on a black background, Chromecast, at the bottom of the screen, then disappeared and the message "no signal" appeared.

Added after 5 [minutes]:

I also changed the power supply to the original charger from the socket, still the same as above.
I reset the TV to factory settings several times.
Referring to the comment that the TV software may not be up to date.?
I don't think this is it, because as I mentioned earlier in my statement. The above-mentioned
"When I connect Chromcast to Panasonic TV, the same thing happens, i.e. no signal, black screen." Only one HDMI 2 port in this Panasonic works properly.
What could it be?

Does anyone know the answer? Has anyone had a similar problem. ? Let me refresh the topic.

Hello, did you manage to solve this problem? I have the same problem on my LG plasma. When it starts, it displays system startup, then after switching to a higher resolution it shows no signal at the input. No factory resets helped. It seems to me that with each update it worked worse. Installation and connection work normally on the phone

Unfortunately, this problem could not be solved. All I know is that it's the fault of the old software on the TV. It works flawlessly on any other TV.

The DHCP anti-piracy protocol is to blame, or rather the TV's lack of compatibility with it. The easiest way to get around this problem is to purchase an HDMI splitter. The splitter bypasses this protocol. It worked for me.

what splitter is it and which HDMI should it be connected to (1, 2, 3)?

bilmarek wrote:

what splitter is it and which HDMI should it be connected to (1,2,3)?

What are you asking about? What is your problem? What equipment do you connect and to what?
You plug the splitter into a free socket if you don't have enough HDMI ports.

Hello. I have a solution to the black screen in Mozilla Firefox. Through this browser, if you turn on Cyfra or Netflix or whatever, and from your phone give projection or screen sharing etc, then in addition to the sound the picture will also be there. Regards