What is the cause of the mysterious phenomenon that the Internet suddenly disappears at 7 am for a year and a half?
The mysterious phenomenon that 'the Internet is not connected at 7:00 am' occurred almost every day in a small village with a population of about 400 people.
18 Months of Village Broadband Disruption Traced to Old TV Set --ISPreview UK
https://www.ispreview.co.uk/index.php/2020/09/18-months-of-village-broadband-disruption-traced-to-old-tv-set.html
Old TV set interfered with village's DSL Internet each day for 18 months | Ars Technica
https://arstechnica.com/information-technology/2020/09/old-tv-set-interfered-with-villages-dsl-internet-each-day-for-18-months/
In Aberhosan , a small village in Wales, England, where about 400 residents live, it seems that the phenomenon that the Internet is not connected to the entire village every morning at 7 am has occurred for about 18 months. In response to inquiries from village residents, Openreach, a subsidiary of BT Group , which provides Internet services in the United Kingdom, has begun an investigation.
Openreach engineers tried to solve the problem by replacing old cables in the village, but it didn't work. 'We were disappointed that we couldn't solve the problem right away, but we decided to find the root cause and used a
Unfortunately, on the day he started using a spectrum analyzer, Jones and his colleagues were hit by heavy rain, and they said they conducted a survey while walking around the village from 6 am without giving in to bad weather. And the spectrum analyzer caught that a big electromagnetic interference occurred just at 7:00 am. Electromagnetic interference originated from a resident's house on the village grounds.
According to Jones, it was a daily routine for the inhabitants to switch on their old CRT televisions around 7 am every morning. As soon as the TV was switched on, the internet in the entire village was disconnected. Home appliances such as CRT TVs and microwave ovens are said to be prone to electromagnetic interference on the Digital Subscriber Line (DSL) , which is an Internet connection method using telephone lines, so the moment the CRT TV is turned on. , The DSL internet has become unavailable throughout the village.
'As you can imagine, when I pointed this out to the TV owners, the owners were frightened to find out that their TV was the cause of the internet problems that occurred throughout the village, and immediately turned off the switch again. He agreed not to use his TV, 'says Jones recalls.
In addition, it is not clear at the time of writing the article why the CRT TV in one house affected the entire village. However, the villagers were relieved that the problem had been resolved. In addition, Openreach reports that the village's internet connection will be changed to FTTH using fiber optics in the second half of 2020.
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