One radiator doesn't work, but the rest do?

[Joe P.]

Hi all, hoping someone can help me. My upstairs unit heat is working great, except in one room (middle bedroom).

No heat was coming out of it when I got the property, but my heating guy flushed the system, bled the radiators, replaced the water tank for the furnace, and all was well. That was late October.

Fast forward to now, that same middle room radiator isn't working again! The heat is fine in all other rooms, and apparently its now leaking too!

I'm headed over to the unit to check it out. These are the old-style radiators, if that helps. Any thoughts would be helpful!