Help with NETtv Vertical IC

[DHAC]

I'm not sure who the real manufacturer is...but, it says NETTV on the front
and model: DTV-29XF3 on the back and chassis. I am trying to ID the vertical
IC - IC501. IC 501 had a melt-down so there is nothing left on the front of
the IC to read. I would be happy to purchase a manual if one was
available...though it's probably just the IC and maybe the B+ source fusible
resister that needs replaced...
Any help would be appreciated!
Thanks in advance!