with all due respect, unless you have the test equipment and experience, you will not be able to fix this. Sonys are daunting to work on even for us techs. it could be that there is a short in the line stage and the set is in protection mode. This is tricky for the uninitiated to solve, and working in tvs needs care as it can kill, even with the set unplugged. take it to a tech or replace the set.
romko
January 2007