3 
1 Not stepping up input voltage
My A2337 isn’t stepping up the input voltage from 5V to 20V.
I’ve tried taking it into DFU but I think the USB ports are not providing I/O at any point meaning it’s not registering on the host computer. Is there another reset that I can try?
Are you using this computer with its original power supply?
由 Andrew S 完成的
@andrewsawesome No, I've tried a couple of different Apple PSUs but not an original one (it didn't come with one).
由 alasdair Sim 完成的