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Solved
CM500 intermittent drops with T3/4 timeouts and Dynamic Range Window violation
Hi- I've been having problems for about a month with frequent intermittent connection drops lasting anywhere from 10 seconds to 5 minutes. Cox came out last week to check the lines and determined eve...
UPDATE: Amazon agreed to replace the defective Netgear modem even though it was out of warranty. The replacement modem has been working fine, so it wasn't a wiring or ISP issue. I'm glad Amazon stands behind the products they sell when Netgear would not even talk to me about their defective product without charging a fee for customer support. Let's hope this one lasts more than 2 years.
Be sure the ISP provisions the modem correctly.
Be sure there are no coax cable line splitters in the between the modem and ISP service box.
Be sure your using good quality RG6 coax cable up to the modem.
Be sure to power OFF the modem for 1 minute them back ON.
https://community.netgear.com/t5/Cable-Modems-Routers/General-info-and-Troubleshooting-for-Cable-Modems/m-p/1530376#M12853
UPDATE: Amazon agreed to replace the defective Netgear modem even though it was out of warranty. The replacement modem has been working fine, so it wasn't a wiring or ISP issue. I'm glad Amazon stands behind the products they sell when Netgear would not even talk to me about their defective product without charging a fee for customer support. Let's hope this one lasts more than 2 years.