LG 42LD650-ZC TV: All 3 HDMI Outputs Stopped Working, Signal Issues, Firmware v03.21.03 Update

Hello to all forum members, since yesterday I have a problem with my LG 42LD650-ZC TV.
Suddenly all three HDMI outputs stopped working, it still says "connecting" and "no signal".
I did some research on this forum and, trying to do something myself, installed the latest firmware, version v03.21.03, but it did not help and the problem still persists. The TV connected with the AV connector shows the image normally (but we know about the quality), the USB movie is also displayed correctly, generally the TV works but does not transmit the signal via HDMI.
Unfortunately, the equipment is no longer under warranty, it is about 5 years old (this is how much has passed from the date of purchase). What do you propose to take? Is it profitable to send it to the LG service, can you replace something yourself, some module responsible for HDMI, is it a larger connected system and the costs will be huge? Help!
greetings

And with the remote control (INPUT) you change the inputs?

Yes, I change, inputs are detected correctly along with descriptions - using the remote control and on the side panel of the TV.

plaszczka wrote:

Yes, I change, inputs are detected correctly

How are they detected? They should detect the signal applied to one of them, unless the cable is damaged or what you are connecting?

Sorry for the error, the TV detects that the devices (decoder or laptop) are connected to it and in the selection panel "highlights" these devices and you can select them when I disconnect the cables, the backlight naturally disappears and you cannot select the device. I checked on 4 different HDMIs that normally work plugged elsewhere and have successfully dealt with the TV before The point is that despite the fact that the connection is visible and the devices are torn off, the screen (after selecting a specific HDMI in the panel) displays only "connection in progress" and after a while "no signal". This is what it looks like.

See what resolution the connected device has. Recently I had a DVB-T decoder connected via HDMI and the description was identical because it was set to 1080p instead of 1080i
Good reception when set to 1080i.

Look ... I'm coming home from work now, I turn on the TV, check HDMI ... it works On its own after two days. Strange thing.

plaszczka wrote:

Strange thing.

Yeah, read about LG and HDMI inputs.

plaszczka wrote:

Look ... I'm coming home from work now, I turn on the TV, check HDMI ... it works On its own after two days. Strange thing.

And take him now prove that prompting didn't help him a ..... ????????? It has become a MIRACLE.

Yeah and I ran out ... it works, it works, it starts blinking, it goes out ... it works and so on and on, I even replaced the decoder in the digital polsata with another one because I thought that maybe that's what it was about but no ... I checked so many things that I'm sure it's a problem with hdmi, what do you think next?

Probably a cold February on the processor, a typical fault of this model. Ask the user Service 1 Link