[OOL] Cable Modem rebooting every day

I have noticed that every evening I lose internet access for a couple of minutes. Looking at my cable modem I see the LED lights re-setting as if the cable modem is re-booting itself. The cable modem is a Motorola Surfboard SBV5120 and I've had it a long time. Should I return it to one of the Optimum stores for a new replacement? -- Go Mark Martin!