By your description it just needs the vertical ic chip and areas
resoldered & probably a god idea to do a quick ESR check on a few
capacitors in the vert.
300$ to do that is robbery .. take the set to a shop where they are
reasonable around 75 to 100$ for that problem .
If you can solder you could do i yourself .
Cleaning the lenses & mirror would be a good idea while its apart .