Chechoslovakian television had something similar I believe it was : http://www.imdb.com/title/tt0376432/ "Synové a dcery Jakuba skláre" but i'm not sure.

In one of the episodes projection stopped and people were told to vote on how the episode should end by turning the light on and off.

It was evening so they had a camera on roof of the tv building, and a reporter in the local power station.

I remembered that because when i saw this for the first time it was already a rerun played in the early morning by Polish TV, and people still tried to turn their lights on and off.