60" Mitsubishi #VS685RS......

Does anyone in this forum know anything about this old dinosaur? It was made in 1989, and I'm having trouble finding parts for it. I am in need of a resistor (R505) and a horizontal output transistor (Q502). I paid to have a TV service come to my home and diagnose it for me, but the repair price is rediculous. The set is in extremely great condition (oak cabinet, oak facial doors), too nice to throw away.

Can any of you help me locate these two items? I've tried to get a value on the resistor and can find nothing. The transistor is also eluding me.

Please help ,

KR