On the drive home from Wales earlier in the year with the caravan in tow, the TV bounced out of its cupboard and fell a couple of feet. After which the picture kept breaking up. Pulled it apart to take a peek inside for problems, reseated ribbon cables - nothing at all found and it worked fine when rebuilt - for a while. Repeated the process several times, with it working when rebuilt.
Took off yesterday for a week with the van miles from home and the TV's picture had real problems and no equipment to do much. Pulled the LCD driver board out for the n-th time, decided to give it gentle wipe over with an old toothbrush and a surface mount crystal fell off in the wash basin. Stripped the drain down to recover it, then began wandering how to solder it back with no equipment. Thought shall I do a dash home with board, but then thought there might be a TV repairer or a mobile phone repairer nearer who might take pity. I tracked down a TV repairer who was also a radio amatuer just a couple of miles down the road, who was prepared to do the soldering repair at 8 in the evening. All back together and fully working again. Crystal had been an obvious dry joints on its legs, surprised it worked as long as it had.