They paid £30 three years ago. So it probably wasn’t a CRT (those are generally larger, and free). The article cites the tech describing single high-level impulse noise (SHINE) as if this were a “thing”. I cannot find that acronym anywhere except in links to this story (on various sources).
People have known forever that leaf blowers, generators, microwaves, powertools, etc. cause RF interference. If a stupid little LCD screen can do that, then the company should move its repeating apparatus (I assume it is not hardwired), othewise the next knock on the door might come because grandma is running the electric mixer to make cake batter. Sheesh!
>>>I cannot find that acronym anywhere except in links to this story
I find your search skills, lacking :)
https://support.zen.co.uk/kb/Knowledgebase/Broadband-Understanding-REIN-and-SHINE
http://www.equicom.hu/wp-content/uploads/EXFO_anote303_Capturing-and-Analyzing-Impulse-Noise_en.pdf
https://kitz.co.uk/adsl/rein.htm