It failed a month ago. They said I needed new coax from the street box to house. Two weeks later they replaced it and it worked for a week then failed late one night.
Next morning it was working again so I thought nothing more of it. Tuesday night it failed again, then was working in the morning. Last night it failed, I called the cable co to complain. This morning it was still broken.
Now I get home to wait for the engineer (still not here) and its working again...
As long as it keeps working they won't find a fault!