Unplug it as this can lead to more costly repairs. I've yet to find TV technicians work with folk in this forum. Once in a while you find such in AVSFORUM but do you have the usual repair gear such as solder iron, tools, Volt meter and Oscope?
Bob
Hi.I bought a LG tv 3 years ago n I have no problem until this morning I couldnt turn it on.Its just a clicking sound thats on in every 4 or 5 seconds .the red light on the tv is still on and the tv is connected to a sky decorder.Need your help please because I cant afford to buy a new one.

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