LED TV - Crackling quality noise first couple minutes after turning on

[dsr07mm]

As title say, I have that crackling noise on high tones until TV doesnt get warm. It's only first 3-5 minutes so I can't really do anything in terms of warranty but if gets worse I will. For now I'm trying to figure out what is cause of that ? It's pretty cold in room due to AC so about 20-22c, sometimes AC is pushing cold air in TV from behind/above so I wonder what part in TV can go wrong but still maintain quality after couple minutes pass. It's happening for 2 months so far.

 

[Suzuki@1473780084@1473780163]

Hello,

You need to be more specific. What do you mean by crackling?

If it's thermal expansion then this is normal.

I'm assuming by tones you mean audio?

 

[dsr07mm]

Pretty much, high volume is better explanation. By craclling I mean that its like old transistor quality or bad speakers when you hear like that membrane is tearing apart. When it gets warmer quality is back.

 

[Suzuki@1473780084@1473780163]

I'm not an audio expert so hopefully someone with more knowledge in that area joins the conversation...

 

[dsr07mm]

Update on this, my TV died like couple days after last response here. Motherboard was fried due to storm. They fixed it, it works. Sound is fine now so I wonder is audio part actually on that very same board which was causing issue after that storm where red light was up only for 2-3secs and I couldn't turn on TV at all.

Weird white flickering line on bottom before TV get warmed up is still here though. Weird.