G34 Modem is intermittent, random bouts of high SNR and connection drops.
Modem UI stays blue, web interface says everything is okay, no signs of issues as far as the modem is concerned, but connection to ISP is gone.
Power cycle via pulling the 12v connector usually clears it. Attempts to reset the router/modem via web interface usually hangs … interface becomes unresponsive.
Logs indicate a link failure - modem can’t get a proper response from the ISP. But it’s probably the modem RF failing. Adding a fan to the base of the G34 “resolved” the problem for a while.
Room ambient is 72f, air conditioned. Never higher. G34 placed where it gets good air circulation and where my Netgear modem sat for 10 years until it died of old age.