I have been using my new PI 3+ for about a month. Everything has been fine. I firstly installed Openplotter/NOOB’s software on a new SD card, and everything was fine then suddenly it stopped outputting to my monitor, saying no signal detected, or signal not accepted.
I have tried 3 monitors that have worked before, and 3 HDMI cables. Lucky I have the VNC server installed, and can see on iPad via VNC viewer, and it remembers my wifi etc. So the unit is functioning, but just no HDMI output.
I have tried to change the settings in sudo nano /boot/config.txt as per forums by uncommenting (removing the #, Ctl-X, Y, Sudo reboot
I’ve even tried the HDMI boost setting.
I got the original NOOB’s SD that came with the PI, and installed….nothing worked(as no headless mode setup, so I can’t see whats happening), put in my previous SD card that has Openplotter/Noobs image, and it still boots and can still see on iPad, but not HDMI.
I downloaded the NOOB’s software again and put on new formatted SD card, and installed in PI, and still nothing.
I am presuming that the HDMI port has failed, can anyone offer me anything else to check, or is this a case of sending it back?