Don't know your click sound. But the reboot is probably a sw bug. Mine does that sometimes too.
Basically, I have to change a few channels right after the TV is turned on. See my previous posts
for details. Also, I saw a few other people having the same issue. When TV reboots, it turned
into black screen and then a "SONY" logo showed up. The pic will be interrupted for a few seconds.
Quote:
Originally Posted by
DCIFRTHS 
Today I noticed that there was a clicking sound (like e relay) coming from the TV when it was in the Standby state. It did it about six or seven times, and I thought that maybe I was getting a firmware upgrade. I was able to put my ear near the back of the set, and it was coming from t he power supply area (where the AC cord enters the set).
I'm wondering if the reboots are related to the power supply? I don't hear the relay clicking when the set reboots though. I know if I contact a tech, I won't be able to reproduce the problem when he arrives.
Any opinions / advice?