Camera is off-line

I am sorry to hear your cameras are not working @ogden1980 Are they powering on? By repair did you open up the cameras? 

If it’s an indoor outdoor camera there is an easy solution to get it back online. To update camera connection:

1 Do not press reset button on power adapter

2 press button on back of camera for 30 seconds

Wait 4-5 minutes so camera can blink white

3 go to xfinity app

4 go to camera that needs attention and press gear in upper right

5 scroll down and tap on update Wi-Fi connection

6 set up your camera

7 camera takes 30 minutes to be stable

[Edit: "Incorrect phone number"

That crew is very nice and helpful Good luck