The mystery of why the broadband in a Welsh village slowed down around the same time each day has been solved.
Households in Aberhosan, Powys, had been reporting slow connectivity for around 18 months, leaving engineers baffled because it started at 7am each day.
Replacing cables did not fix the problem, but then they used a monitoring device and found the fault was caused by a second-hand television.
They found that the old set was emitting electrical interference.
Openreach said the owner was "mortified" to find out it had been their old television that was causing the problem.
"They immediately agreed to switch it off and not use again," engineer Michael Jones told BBC Wales.
Engineers walked around the village with a monitor called a spectrum analyser to try to find any "electrical noise" to help pinpoint the problem.
"At 7am, like clockwork, it happened," said Mr Jones.
"Our device picked up a large burst of electrical interference in the village.
"It turned out that at 7am every morning the occupant would switch on their old TV which would, in-turn, knock out broadband for the entire village."
The TV was found to be emitting a single high-level impulse noise (SHINE), which causes electrical interference in other devices.
Mr Jones said the problem has not returned since the fault was identified.
