Humax needs to be in standby for dvd playback. Just put dvd in and turn Humax off so goes to standby (don’t turn humax off at back as dvd signal goes through it to the TV). Dvd menu should appear, if no picture but DVD sound then check scart cable at back, might be lose. Finally get a picture but it stuck in black and white. Check screen setup on dvd menu is set to PAL.

Dvd player was/is a Acoustic Solutions unit.