Looking for a used fc with osd and a broken tbs unify hv pro after apply voltage 5v

Hi guys, i´m in need of fc with osd, it can be a f3 with osd, i just started a low budget mid range build using a old qav 250 frame and my budget is low, about the vtx, looking for a unify hv pro that was damaged because applied voltage to 5v output, so i can buy it for cheap and i can repair it, hope some one have any of these parts that can be sold for cheap or giveaway for help me to this build