I'm running my MacBook Pro 2017 15" on Catalina. Suddenly, i could not see the internet, despite being able to access my home's wifi. Also, I could not access the internet via my iPhone's hot spot. I tried to establish a new network too and that did not work. I tried a USB connection using my iPhone 11 pro Max connected to the MacBook. None worked, so I contacted, eventually i spoke to them on the phone.
After some checks, I was told to reset the Nvram which I did ... then after rebooting, I got a message to remove the USB device as my battery could not sustain the output. The USB device was my fully charged iPhone 11 Pro Max which I had connected to the Mac, as I had tried to get onto the internet via a USB connection. The MacBook Pro 2017 15" was plugged in. I felt the charger, it was mildly warm, probably a 7 degrees above the room's ambient temperature.
Then, the support person said we'll reset the SMC controller. The computer would not restart ... then we tried a diagnostic check - it reported a faulty SMC controller and an error code. Then on trying to reboot, the MacBook would not reboot. It had a back screen with a white revolving icon in its centre.
i was told the SMC chip appeared to have failed - a hardware failure.
i took it to an Applestore Genius bar and the chap restarted the computer, and got it onto the store's wifi. He said the battery was only on 1%. He said it had 700 cycles - but he did not show me that cycle count. He said it's best to get a new battery. And that they'd replace the keyboard as well (which had lost a graphic and sometimes double lettered or missed a letter). And I signed for $Au260. bout $US 200. A new battery costs $Au189 ($US147). Those costs include 10% Goods and services tax.
i was relieved the motherboard was OK ... I felt OK about a new battery and keyboard.
Then ... driving away, I recalled about the battery issue, that i thought my MacBook was included ...
i then called Apple, and eventually, i have threatened them with consumer affairs.
They have said my particular MacBook Pro 15" 2017 (I think its an August revision) is not included ... It's now fixed, and I am waiting. I am getting angry with their tactics. Which is to waste one's time, and then, when after 43 minutes i said to the person that clearly they had no authority, and that I would now take legal action, they said please hold ... and i spoke to a smart ass in Singapore who told me my computer wasn't covered.
I said that two days ago, my battery was sufficient for my needs, and that it failed while following Apple's Nvram restart ... and that i was not told by the service personnel, about any issues with Apple keyboard or batteries.
Their attitude is frustrating and not genuine. They have fixed the notebook too ... but i am sufficiently annoyed at their attitude, I may leave the computer there at the Applestore and take them to our legal redress government authority. I suspect I would win, and if not, it would cost them a lawyer turning up, or more likely someone from a management position, which is probably what most big companies do ... I said too, I was happy to pay something, as my battery was old, but that it was sufficient for my needs, as it had been running just fine whenever I did use it off the charger.