The USB cable you plugged in device has either a short to AC or you are using the wrong power brick for the device.
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The USB cable from your printer you plugged in has either a short within it to AC or you are using the wrong power brick for the device.
So what happens is the power surge into your computer damaged the logic board. Here’s the IFIXIT guide [guide|6421] and you’ll find the different logic boards listed. Presently IFIXIT is out of stock.
Ouch! Your logic board got zapped!
The USB cable you plugged in device has either a short to AC or you are using the wrong power brick for the device.
So what happens is the power surge into your computer damaged the logic board. Here’s the IFIXIT guide [guide|6421] and you’ll find the different logic boards listed. Presently IFIXIT is out of stock.