According to my a/c tech, the magnetic coil is grounded. And since the bearing is making funny sounds, he suggested we have that fixed, too.

I can't afford a brand new or surplus compressor (DENSO 15 series, I think) so I opted to have my current compressor opened up and worked-on.

Do you think this is a sound move?

Some aircon shops also want to replace the expansion valves (dual a/c), drier and (gasp!) even the evaporators. I think these shops are pulling my leg. Or do I really have to replace all those stuff even if my a/c was never run 'dry' (there was no refrigerant leak)

Total bill at the local shop for the bearing, magnetic coil, aux fan repair is US$ 56.00 and that includes labor and materials.