UK Electronics Repair Questions? Ask a Technician ASAP
Hi, thank you for contacting JustAnswer.com. My name is Russell. I will do my best to provide the right answer to your question.
A problem that only occurs when a device like your TV is still cold, not yet warmed up, is usually a failure of an electronic component.
But tell me what the age of your TV is?
And also, describe the flickering a little more. Is it a matter of the brightness? or of the color? of the position or 'sync' of the image on the screen as a whole?
Also tell me the model of your TV... much might depend upon that information.
(But in sum it's best and most honest to warn you: this problem may require repairs. Do you have any experience with disassembling and servicing a TV, of any kind even if not of this model's particular kind ?)