Panasonic PT-40LC12 40" Rear Projection HDTV "vertical float switches" Questions

...UNPLUG SET. Wait several minutes to completely drain high voltages. The power supply board is large vertical board in the back on the right side, AC cord goes to it. There is an RF coil near the ...

...adjust the master brightness or screen/G2 pots. A single horizontal line means that you have lost vertical deflection. High voltage is most likely fine since there is something on the screen. This ...