STV Image dos not work properly

[muxco]

Good afternoon, Medion Community,

I am here to ask for assistance because every time I try to submit a form, I get an error. A CS Representative attempted to submit one for me but stated that there is a technical problem and it does not work. I sent an email too to webshop@medion.com but I still do not have an answer.

Thus, my problem is that, after a year of ownership, I am experiencing the following problems with my 50" STV MD30606 X15040 EU 23:
-TV freezes , mostly the apps,
-Video becomes pixalated,
-When I try to go to the app store, by pressing the Medion button on the TV controller or by using the home button and pressing Medion, a black screen with white stripes appears and nothing else can be done,
-If I turn off the TV and turn it on, even after waiting several minutes, nothing fixes it and everything stays the same.
-The software became very slow all the time.
-TV image flickers,
-The remote lags with the TV,
-HDMI connection some time fails with the Fire Cube from Amazon; even when I swap cables, after some time the screen goes green.
When I try to screen my phone, S24, on the TV, there is an almost 1 m lag between them.

The distance between my router (5 GHz) and TV is less than 1.5 metres, and the TV indicates a strong connection. I used my phone, which has a hotspot, and the same issues occurred. 
The sound works properly even when the image does not; the same issue that I face with the image occurs inside Medion TV software. I bought the Fire TV Cube to see if I could fix it, but the issues persist.

Thank you in advance, everyone.
Muxco

[Igor28]

Hi @muxco ,

Have you tried connecting the TV to a DVD player, a video game console? See if the issue is the same.

Please also perform a first installation of your TV:

Press menu

Setting

Installation

Initial installation / first installation

Yes

Then follow the instructions marked on the screen.

Best regards