Solid red light on Pi 5 after rebooting (Zynthian V5.1)

Hi guys

My Pi 5 has seemed to die after a reboot, I’ve tried different SD cards and power supplies, I’ve also tried to reinstall the bootloader, the Pi doesn’t try to boot from any media, I just get a solid red light the moment it receives power, from my research it could be a blown fuse on the Pi. I measured the voltages of TP1 & TP2 and are both reading 0V

Any suggestions would be truly appreciated!

Thanks