Hey, new to the forum, but i have searched around for similar posts but no direct answers or exact same problem as mine, so wondering if any one could help,

model number is - 42PFL7662D / 12

ill be sat there watching the tv, day and night, and it randomly turns its self off then back on, the blue power light stays on threw out it tho, i also notice it makes a crackling sound when doing this, ( only some times it crackles ) taking plug out ect.. doesnt cure it,, as soon as i put plug back in it still does it, but like i said its randomly, but once it starts it does it for agges then randomly stops, but it can also go for days with out doing it, so i dont know... could any one share some info or tips or advice on what to do? thanks in advanced..