its more likely a panel issue and replace the tv

Good point, yes the snow scrambles the on screen menus, so it either happens on the LCD control board or the main board somewhere later in the pipeline. Might be worth fixing then.

does it occur when nothing is plugged into the TV and you have the TV menu up?

Trying to figure out whether the issue with this Samsung UN40D6000 is worth fixing. Whole screen has some intermittent flickering and the top few inches have persistent snow/flickering as shown in this video:

[https://youtu.be/sDuMyzn1JNs](https://youtu.be/sDuMyzn1JNs)

Same issue on all HDMI inputs. Is this a main board issue or the LCD control board? If the former might not be worth replacing, but maybe the latter would be.