I have a Panasonic th42px50u. I am having no luck locating the base stand (tyst42px5x). But I have found a tyst50px20. Will that stand accept my tv? Thanks

SOURCE: Panasonic TH-42PD50U Base Stand

Hello,

Unfortunetly, this part has been discontinued by Panasonic. You may want to try ebay to locate this item. The part number you are looking for is TY-ST42PX5W. Good Luck!

SOURCE: Wall mounting Panasonic Viera 32" tv

There's a little more elaboration required on the above post...You need to remember that the base has two long pins that go up into the TV. These pins are held in by two screws each. The screws are on each side of the TV (two vertical inline screws, inside a small inset section). Remove all four screws and the TV will come up off the base. Pull it straight and gently, but firmly, to unseat it from the pins.

SOURCE: I need a Panasonic TV TH-42PD25 base stand! I've searched ebay, no luck. This might sound dumb, but can I use base stands from any of the other Panasonic 42" models?

You maybe lucky, but make sure the mounting holes on the stand matches your TV.
Alternately you can use a wall mounting and these have mounting holes that suit most TVs.