Yep, that's what I suspected. The 2 regions of Thailand with the most powerful saiyasat are Deep South (Muslim/Hindu) and lower Isarn around Surin/Srisaket/Buriram (Khmer).
I've got nothing to offer you in help/advice regarding TVs & iPods, none of the research I did ever dealt with those things. And as you're in London there's nothing I can think of regarding getting saiyasat lifted over there.
If you're coming back to Thailand, or S'Pore, in the near future, and you still feel that saiyasat has been done to you, and is still effecting you, then you can seek out a wisit or mor saiyasat to remove it. Enquiring at Hindu temples, Thai temples or Mosques would be the best starting place.
Here's are some photos from 10 years ago. A Thai girl I knew at the time believed saiyasat had been done to her and she asked me to help her find someone to lift it. I located a temple near Pattaya and took her there. It happened that there was also another Thai girl there at the same time with similar issues. So the monk carried out a ritual with both of them and lifted the spells.