Unfortunately I don't have a solution to the problem, but it is NOT the switch arcing. The faint ticking is from the switch mode power supply as it tries to start up, senses an overload & then shuts down. This cycle repeats continuosly, hence the ticking sound.
I used to work with tv's but not anymore. The comment about capacitors in the power supply is probably correct, but which ones? Changing capacitors is beyond the capabilities of most diy enthusiasts - leave it to the pro's.
sean, August 2011