Thank you for your initial reply.
I am a pensioner and have never opened the back of a television in my life, so a bit apprehensive about doing so, may ask someone else, however:
If I open tv and identify the bar-coded numbers on the sticker what will this tell?
Do you think it may be the tuner?
Is this an expensive part to replace and easily obtainable for this model?
Is it cost justifiable? ( tv is nearly 4 years old and cost £600)
I get a good picture/sound playing thru my digital receiver/recorder meantime.
Would you believe, this morning , the picture and sound thru the tv is fine with a good signal and no bit error level when I do a signal test.( self diagnosis /signal test , strength 88)
But I'm sure it will revert back to the problem I have been experiencing unless you tell me differently.
As you can no doubt tell , based on what you tell me I may have to call a television engineer back....
But it depends on the cost aspect.( repair vs replace tv)
Would you know if Samsung have experienced problems with this model and this fault and I should approach them?
Regards, and I look forward to your reply.