No Picture or Sound for Minutes!

I have a Samsung LN40A530P1F built in Jan of 2009. Lately when I turn the tv on, it takes several minutes, (5 to 10) before a picture appears on the screen or for any sound to come on. It does this with or without switching it to tv air, cable, satellite. So, I know it's the tv. What is the fix? Unplug it for an hour? Change electrical outlet location? Go back to factory settings? Or, is there some kind of backdoor code to clear it up? Thanks for any help. Of course, the tv is never moved or touched, so it wasn't dropped, hit or damaged in anyway.

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Clarification Request
Link, comment.
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no clicking

I don't seem to hear any clicking.

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I do the updates, I guess I can try again and I will post what it says.

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NO. Do not update if it's current.

I did not write to do that. There is always a risk when updating and if it goes south, at least I didn't tell you to do this.

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problem solved

I called Samsung 800 number and Roger from India told me to plug it into wall and not the surge protector and bam. It began to turn off and on. Thanks.

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Re: No Picture or Sound for Minutes!
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Second idea. Anything plugged into USB ports?

Try it without that.

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