I called Google via the Hardware Warranty Center (1-855-836-3987, open 24/7):
Unfortunately, my device is past the 1 year warranty period (surprise, just like the others in the reddit link above). Google was helpful enough to call LG on my behalf, explain the situation, and hand me over. LG's warranty period is 1 year as well, so if I wanted to send in my device, I could do so but it would cost me to have it repaired. Unfortunately, they were unwilling to provide an estimate. Sending in the device to have the damage assessed is free luckily. The repair facility is in Fort Worth, Texas, and will take 5-7 days to estimate damage and repair (not including shipping time).
I decided to call T-Mobile to see if I they had the Nexus 6 in stock, just in case. They did. I also asked if they could do out-of-warranty repairs. They didn't, but they referred me to a nearby cell phone repair store. Just up the street from me! I didn't even know the place was there.
I called them and inquired if they could fix it. They said yes, but might need to order the power button if they don't have the correct size. Here's the meat of the post for those of wondering how much it will cost to fix: it would cost $35 if the power button needed adjusting, or $70 (with T-Mobile discount) if the power button needed to be replaced and re-soldered to the board. I took it over to get it inspected to see if they had the correct size power button. They disassembled it in the back, inspected it, and told me that luckily they had the correct-sized part. I figured sure, let's go for it, drove home, waited an hour or two and went back. I am happy to say that the power button is now working good as new!
- Call LG for out-of-warranty repairs at 1-800-243-0000. You have to FedEx your device, but shipping is taken care of.
- If you don't want to mail in your device, call your local T-Mobile store to refer you to a local repair shop.
- I found on Google that some people soldered in a new button themselves, but I didn't want to do that. If you feel so inclined, it apparently only takes an hour or two.