Hitachi 50SBX70B 50" Rear Projection Television "reduce back ground sound tv" Questions

...back in? there is a service bulletin out for this set i would have this done first! This update covers to the following Hitachi models and chassis 46UX50B/51K, 50UX52B/53K, 60UX54B/55K, 50SBX70B, ...

...ground wire on CN8016/pin 4 was pulled out not grounding the HV Block 10. KP-51HW40 Shutdown 8 Blinks Found the 6v supply from the G Board dropping to 3.2v. CN4/3 drops to 3v, pix mutes, Red LED ...

...back cover,(there will be two wires still connected to cover upon opening, remove these, to actually pull cover off) be careful. You will find a power supply board on the left side. Take the power ...