Ok so I took my rp4 4g loaded up libreELEC aand enjoyed 2 months of playing content in 5.1, then one day it stopped outputing HDMI, so i did this
Diff HDMI cables
Diff monitor
Ran the utility that makes sure that the SDcard is the boot sourse, that caused HDMI to show green
Turned of pi and flashed a new SD card, it looked 100% like it was loading but nothing ever appears on the screen, it seems libreELEC has killed the HDMI
So bought a pi4 8GB and a very nice aluminum case with fans, 2 months later, same deal, exactly the same thing.
Has anyone seen this or delt with it, or do I buy another one for the 2 months it will work for!