Loss of internet service

[J19]

Modem loses internet connection every 90 min.  Comes back on line in approximately 6-7 min.  Lights on the front of the modem never go out during loss oif internet.  ISP has been here twice to check lines and found some noise on their side. Was told it was corrected and to reboot my system.  Did so with no change in issue.  

[plemans]

do all devices drop or just wireless devices?

Do you have a screen snip of your modem connections log? 

if you have any amplifiers, splitters, attenuators in your line, remove them.

also preferably, move the device to where the coax enters the come and directly connect. this helps prevent the issue being something within the home like a bad coax run. 

Check for loose connectors, cheap connectors, corroded connectors. 

Who's your ISP? Some ISP's are more helpful than others. Some, like spectrum, will fight not to do a thing since its "a 3rd party device".