Richard Pitcairn wrote:
. . .
The time capsule I think must be a couple of years old. I would have to track down the receipt. I do have Apple Care on my MB Pro, possibly on my wife's MB - I am not a home so would have to check files. You thinking I should call for help?
I'm beginning to be very suspicious of it, and at two years of age, even more so. You've tried so many things, and are still having intermittent problems, it's hard not to.
If you purchased AppleCare for a Mac within two years of the TC purchase, the TC is covered automatically. Did you buy the TC directly from Apple? If so, they should have a record of it.
Apple has replaced many of them, out of warranty, and a lot that were not covered by AppleCare. Most of those were the power supply problems, where the TC just won't power-on, but a number with this sort of problem, too. What their criteria for replacement may be is unknown to us mere mortals.
If this continues, I'd suggest calling AppleCare (800-275-2273), telling them what's been going on, and asking (politely, of course) if they can help fix the problem.