PVR and telus box

For the past three months we have had trouble recording programs and have done all the troubleshooting that was supposed to fix the issue.  On Friday a telus tech came to our house and replaced the main PVR box he said that was the problem.  It worked for exactly a day and now the same thing is happening.   We get this message "make sure your pvr box is connected to the internet" it is.   This is so frustrating.  When we go to guide there are no recordings although we have set it up.