You are not alone. I haven't call the technical support and neither found a solution yet. In the last couple of days was ok, maybe they fixed the problem. Will see.
It seems to be Bell Media channels: Sci-fi, Comedy, CTV, City, TSN. But it doesn't happen to Bell Fibe subscribers. It usually goes off for about a minute or slightly longer. It's been happening for well over a year.
Go to the Videotron.com site
First steps
User Guide
Gamification
