Mind you that diagnosis is key but exposes LETHAL VOLTAGES.
And a video of your TV's failure is fine but won't be what any tech will use except to verify it needs service.
The failures are common, a too long list and is not Samsung exclusive so you'll see all the other makes at 5 years.
Get an estimate.
My samsung Flatscreen tv from 2008 currently shuts off and turns back on after not being able to create a picture on the screen. It becomes very "snowy" like and then automatically shuts off and tries to turn back on after it has "rebooted" I have a video to give a better example. Is this a common thing for these TV's? How can i fix this issue