You can try www.samsungparts.com and see if there are service manuals and parts there. If I misread your post, I apologize in advance.
I have a 50" Samsung Tv that is constantly humming and has a static picture that is very light (you almost have to turn off the lights). I cannot turn the unit completely off either by remote or manually on the tv itself. If it is plugged in it will just have this light static all the time and no picture or sound. I took the back cover off and replaced the fuses on the power supply and also looked at the capacitors which appear to be fine (there is not bowing at the top).
Model # is PN50B450B1DXZA
Power supply Model # PSPF520501A
The TV is just over 2 years old and is quite an investment at $425/year. I called 1-800-SAMSUNG and I should have just banged my head against the door. Anybody that could help me I will certainly pay it forward.