Solved! Free tv repair advice

[petronella]

43" Samsung Plasma TV makes a loud crackling noise, no picture but audio continues.
changed channel and heard a much louder crack, so unplugged the set.

 

[ssddx]

the crakling is probably due to interference.

perhaps there is a short in the main board or other device inside the tv.

unless you are qualified in pc repair, its better left to a professional.