DVD Player with Digital Optical out to Sony Amp and Ixos SCART to TV. It is over 5 years old and has had an intermittent fault for the past couple of years viz:-
1.When the player is turned on it makes a 'click' sound and picture/sound via Scart to TV operates OK. Digital sound to AMP OK... then during film, player makes a 'click' sound and picture/TV sound goes OFF. Digital sound remains. This on/off operation can happen intermittently throughout the film

or if i'm lucky, never happen at all.
2. Turn on, no 'click', no picture or TV sound, but Digital sound OK from AMP.
DVD can then be left on 'standby' or 'resume' whilst I watch the TV for the evening and then without warning, may be 2 hours later, the player will 'click' and I will get a Sony Screen Saver/picture/TV sound.
SCART has been 'wiggled' about and occasionally the picture has appeared. Swapping Scarts make no difference.
Has any one any clues to the cause of the fault?

Responses appreciated.