Hi,
recently, my Libreelec player (RPi 4 with Hifiberry addon card for SPDIF output) is having problems: After around 45-60 min of playback, the player consistently stops and exits to the menu. I have performed all software-related tests I can think of (update to newest libreelec version, fresh installation, OSMC installation), but the problem persists.
I am now suspecting it might be a heat issue, since the problem always occours after a similar time of playback (and recovers after about 5min). The reason might be the Hifiberry board impeding the airflow. Since the system has been working without problems for 2 years previously, I even think there might be permanent damage now that has built up over time.
Can I test this hypothesis somehow? Check the temperature? Check hardware integrity?