Attached photo shows a resistor (I think) with the following written
across it:

R73 KP
K7

And across the top of it:

5n6 H 2000

It measures 1"L x .6"H x .25"W
2 leads

It started flaming in a 21" Viewsonic Monitor, and I'm not sure how or
where to order a replacement. Any help would be greatly appreciated.

BTW, it was located a few inches from the flyback and right next to
some power transistors. Is it likely that the root of the problem is
something other than this part?

Many thanks, Matt