I turn on the humidifier - cable TV disappears. What is the reason?

Question

A television

Hello. I understand that the question is slightly off topic, which is all about here, but I know that there are a lot of smart people here with a good outlook in technical things ....
In general, the question is in the title.
Details: we tried different sockets, nothing happens from any other electrical appliances in the same sockets. The signal disappears only when the humidifier is turned on. Which with the beginning of the heating season, we began to include. This was not the case last season.
Thanks everyone)

Answer 1

Is the humidifier grounded?

Answer 2

Does the signal disappear permanently or does the level drop? It is possible that due to damage to the cable, the level is already at the limit, and the noise that the humidifier gives just finally finishes off the signal-to-noise ratio, and the TV stops showing.