I have a PL-630 and love the unit. I had a local electronics tech in the Dallas area replace all the capacitors/resistors - nothing else was required and I suspect there is a tech that could handle that task for you locally. Shipping the turntable is undesirable, of course, unless it is the only option.
One improvement I would like to make is to replace the original Pioneer phono cables with some higher end/lower capacitance cables. I would love for anyone who has performed this upgrade to tell me exactly how they connected the cables inside the unit. There is a white plastic plug on the cable that slides onto a 4-prong post mounted plug. Do you solder the wires directly to the prongs, or modify the OEM female plug to accept the new wires? Thanks!