Router on TC dead. How to use as back up hard drive only with Time Machine.
My 2TB Gen 4 (I believe. it's at least 2-3 yrs old) Time Capsule was showing solid amber light. No wifi. Tried resetting. Only solid amber light showing. Took it to a local Apple repair. Was told hard drive was still intact, but router is dead. Also told I could still use hard drive, connected to iMac through ethernet cable, to act as our backup drive for Time Machine. I'm off to buy a new router, but I have limited knowledge in the world of connectivity and want to be sure I connect iMac running Yosemite 10.10.4, Motorola modem from cable co., new Airport Extreme, and old Time Machine hard drive correctly. Any help would be appreciated.
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