HELP!2018 MacBook Pro no USB connections, including charging

[BadMonkey]

My 2018 MBP is less than 4 months old. I bought it second hand.
Its been working fine for 3 weeks, until tonight the USB ports all seem to have died while I was streaming through a dongle to HDMI to my television when it rebooted itself.
Now none of the USB ports work and it won't charge. I'm down to ~15% after a night of rebooting the PRAM, SMC, and all of the other key combo restarts. I even safe booted and wiped the drive and reinstalled the OS to no avail.
With my last 15% before this thing dies, what should I do?

 

[dpny]

Make an appointment at an Apple Store and take it in for service. This happened on my 2016 MBP, and was the sign of a motherboard failure.

 

[BadMonkey]

Thanks, I sent it to a shop for repair and waiting on the diagnostic.
I'm sweating bullets waiting for the news.

Is this an under warranty repair that Apple covers?
I didn't have Apple Care because I bought it secondhand.

 

[ISKOTB]

maybe...you can check by your SN here

 

[BadMonkey]

maybe...you can check by your SN here

So it was the logo board and I/O ports, both replaced and both covered by the 1 year warranty. Whew!
What gets me is this is only a 3 month old computer, how common is this problem on the 2018 model and do I need to worry it will happen again?

 

[dpny]

So it was the logo board and I/O ports, both replaced and both covered by the 1 year warranty. Whew!
What gets me is this is only a 3 month old computer, how common is this problem on the 2018 model and do I need to worry it will happen again?

I had this happen with my 2016. No problems with my 2018 so far.