The mirror in my vs50703 tv broke is there a place to buy a replacement or should i junk it

You don't say if it's just the glass mirror that's broke or is the housing cracked as well.
If it's just the glass mirror, it's held in place by double-faced adhesive tape. You can buy a replacement from a dealer or on-line. To get the old one lose, heat the glass with a hair dryer while pulling on the glass with a hooked tool.

Replace it, you broke the plastic that holds it together, Maybe a junk yard

check the mounting bracket if its broken you'll have to replace that , also, check the mount on the door itself, they get bent and with a little TLC can usually be bent back in place,, remove the inside trim piece to the mirror mount inside the door , from there you can see the mounting bolts that hold the mirror in place, if the actual plastic section of the mirror got broke, there is no real fix for that , I suggest getting a replacement at a local junk yard,

fit a new unit, The part that has snapped is probably a tiny leg of plastic that is irreplaceable and not repaireable.

Call around your junk yards in your area,first to get an replacement,unless you have an ton of money.

Rockauto.com partstrain .com... the best prices and and you get almost everything ..../ Car-parts .com junk yards parts

it has to be replace here is a place that sells only GM-parts and its call Schram auto & truck parts and the # is 1-800-292-1032

no you can buy either heated or non hated mirrors and be ok either way. once you put the new one in place you will need to make sure you hook the controls up so you can control it from the dash

Take the back bezel off. It should have many screws around it. then once open you should see the back of the mirror. Carefully take the screws out of the mirror, you may have to do some modifing with the new mirror if it does not come prefabed.

The Hitachi part number for the mirror used in the 50UX57B is KS00164 and can be ordered from a distributor such as Union Electronics (800-648-6657) or Herman Panson (800-938-4376).