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Bizarre TV Behavior

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Zero999:

--- Quote from: BillB2446 on March 01, 2024, 01:39:27 pm ---No, I haven't tried that. but I will. I still don't see how that would explain the strange behavior that only happens to my wife.

--- End quote ---
Microwaves are funny things. Perhaps her dimensions, just happen to form a band stop filter tuned to the WiFi frequency?

wraper:

--- Quote from: BillB2446 on March 01, 2024, 01:39:27 pm ---No, I haven't tried that. but I will. I still don't see how that would explain the strange behavior that only happens to my wife.

--- End quote ---
But have you switched places where you sit? Also could be clothing that causes stronger static discharge.

Stray Electron:

--- Quote from: woofy on March 01, 2024, 10:13:15 am ---No idea, but strange things can certainly happen.

Many moons ago I started my working life as a TV engineer for a now defunct company. One customer I visited was complaining that the TV changed channels all by itself at random times. I checked everything I could think of, including making sure the customer wasn't sitting on the remote control, but without anything conclusive. The lady had made me a cuppa and we were sitting down chatting. There was a fire in the hearth and in front of the fire her dog was snoozing. I reach out to stroke the dog and it looked up and yawned. At that moment the TV changed channels and I knew the reason, I said "your dog is changing channels". Imagine the look she gave me.
In those days the remote control was ultrasonic, just two channels. One to change channels, cycling through the few that ere available at the time, and one to toggle the sound mute. The dog was emitting just the right frequency to change channels when it yawned. I convinced the lady by shaking my car keys in front of the TV and muted/unmuted the sound a few times. Some time later I did get confirmation from the customer that it was indeed the dog, a very fluffy cuddly labrador.

--- End quote ---

   I've seen the same thing happen on TVs in the 1960s TVs in the US.  A dog would have a metal chain for a collar and when they rattled the chain it would trigger the ultrasonic TV remote control.

Zero999:

--- Quote from: Stray Electron on March 01, 2024, 07:14:12 pm ---   I've seen the same thing happen on TVs in the 1960s TVs in the US.  A dog would have a metal chain for a collar and when they rattled the chain it would trigger the ultrasonic TV remote control.

--- End quote ---
That's different. A modern TVs uses an infrared, rather than ultrasonic remote control.

In this case it's something which is interfering with the signal, most likely Wi-Fi. I could still be caused by jewellery though.

rsjsouza:
Other environmental aspects might be influencing this, such as static that triggers the TV (or remote) in a funky way. Do you have carpet or a fabric on your sofa? Does this happen when the relative hunidity of your room is low? Electrostatic charges can induce spurious voltages in equipment that is not shielded very well, especially if the TV was repaired in the past and the technician removed or replaced incorrectly all of those copper/aluminium shielding tapes when reassembling.

This is usually tested during the certification of a product: immunity tests.

Good luck with your investigation

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