The old Technics SL-Pj26A comoact disc player has two heat variables:
- Need to warm up at beginning by playing for 5 minutes until low quality CD-R works without noise.
- Being idle (on but inactive) for a few minutes makes plaback impossible until I switch it off for 30 seconds up to a few minutes or press play and wait (it has no error timeout) for it to finally start playback. If it does, there is also no noise.
How can this be explsined technically?