Hi there, my RPi 3 B+ purchased from Core in October 2018 no longer boots up. I just have the power led turned on a solid red, and nothing else happens. I have tried to leave the unit powered off for a week reading somewhere that a soft fuse could be a problem, and I have tried with and without the SD card installed, and confirm the SD card work in a different RPi I have. It was working fine then one day after a reboot decided not to come up again!
What should I try or is there anything else I can do given the unit is only 3 months old?
Thanks in advance for your help.