Hi,
As some one said, enter the dragon may be easy, but managae and retreat is and will be a problem
Same will be the case with philipsTV
Evenif i could tell you how to enter , you require the data for seeting things over there-- any disturbance- you may not be able to work the TV to what it is a moment back--
So i suggest to try and get service manual for the set you hold. and thereafter things will be better and you may go ahead confidently
Sarma