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- HP Z4 G4 will not boot

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12-16-2023 08:09 AM - edited 12-16-2023 08:11 AM
Dear All,
I was programming a EPS32 via USB connector to a USB port in the back of the Z4. The ESP32 slipped onto a 12V external power supply. I don't think the 12V hit the 5V pins of the USB directly, since they are on the other side of the EPS32. My screens went black and the Z4 shut down. The screens restarted immediately, the ESP is still working, the external 12V power supply is still working, but the Z4 shows no sign of life. Nothing at all.
I took out all the cables and retried after a while, with only the power cable connected. The Z4 doesn't do anything anymore. Since the screens went off as well, I guess the power of the outlet of my home dipped a bit.
Is there a fuse or something I can measure to verify if my PSU broke down?
Any information is much appreciated.
Best regards,
Lex