Screen all full off pink and black spots

SOURCE: Samsung Plasma 42" TV Screen problem

panel migth be bad, connection/connector on it might have loosen up already! it it has a warranty then return it at once and ask for a new one! its what you've paid for.

SOURCE: Samsung 42" Plasma-SPN4235 screen problem

the panel itself has failed

SOURCE: samsung ps42s5h

IF YOU ONLY CHANGED THE BUFFER, YOU SHOULD CHANGE THE Y-MAIN ALSO, THAT BUFFER TAKES OUT THE Y-MAIN AND VISA-VERSA

SOURCE: lg 42inch plasma

Sounds like main board failure and or power board failure. You need to contact manufacturer and describe problem for tech support. Some of the parts in Samsung TVs have lifetime warranties. Change out of two board is about an hour job and service call is usually comped. Hope this helps. J

SOURCE: I have a 5 yr old Samsung HP-R5012 Plasma Display

Hello,

All plasma an lcd TV have boards that control vertical and horizontal output to their respective areas. They are connected to the screen by ribbon cables. If one of these boards fails all together, has a failed chip, a bad connection, or a bad ground somewhere it will result in a black line in the area of that board. A bad ribbon cable connection on the bottom will result in a vertical black bar though the screen. Many times resetting the connection will fix it, if the ribbon cable has been nicked there could be a severed connection. They an sometimes be fixed, but it is a pain. An yes I have done it, but the bar is gone. The same will happen if the chip that outputs to that area opens. The connectors are the first place to look paying close attention to the cable, they are extremely delicate so great care must be taken if you decide to tinker with em, the usually have lift locks that release them, but it is very easy to wreck em.

Good luck.