I just bought myself a brand new shiny CanaKit RPi4B, case, fan, power supply, HDMI cable etc.....The only item that I used of my own was a known good SD Micro card. One that I know works and that I pulled out of another known working RPi4,
I wrote a brand new download of LibreElec v9.2.6, plugged all into a known good Samsung TV (it used to have a RPi3B on it a year ago so I know its good). No video. HMMMM....I tried combinations of HDMI ports on the TV, and ports on the pi, nothing. I get another known good TV, nothing. Same procedure, swapping around ports, swapping out cables etc...I finally put the pi on a known good TV that is currently using a RPi4, works. I'm thinking perhaps these two TV's are no longer working as I thought they were, so I went out and bought a BRAND NEW TV, something that I know is good.
I still don't get any video output. I decided that since I have a known good PI and a known good TV, that I could swap out PI's. Put the good PI on the new TV, and the new Pi on the other TV. No video output with the known good Pi and the new TV.
I forgot to mention, that in between all of this, I re-downloaded LibreElec and re-wrote it to my card. I even swapped out the power supply with the known good power supply. Still nothing.
Okay. This is telling me that there must be something else going on. At this stage there are no log files to look at, its still just a basic SD card with LiberElec written to it. What else can I look at, or tweak or adjust or IDK.
Any idea's are appreciated.