Pioneer SX-1050: worth repairing?

The Pioneer SX-1050 is an outstanding receiver that will outperform any new unit under 2K. It is well worth a full restoration. They are not that complicated and any competent tech should be able to do the job. Audio Karma is an excellent resource for finding techs who know vintage audio well.

Also, I believe a well recapped Pioneer should sound better than new. Capacitor technology has only improved. Compared to ARC and EAR pieces in my collection the Pioneer holds it's own.

Check this out:
COMPLETE-RESTORATION-PIONEER-SX-1050

If it's in great shape physically / cosmetically, I'd have it completely restored. I have a SX-1250 that's been completely restored, and I think it's an awesome piece of hardware.

Unqualified yes, unless there's an unobtainium issue. One of the x50 series strengths is that it's not as dependent on "proprietary" parts as the later (but arguably cleaner sounding) x80 series. I like both, the x50 series has very (negligibly) slightly heavier shielding, mainly around the FM boards, and other than that, between the two, it's pretty much 100% personal preference. The 3x00 series (after the x80 series) is NOT the same deal though. Those all run hotter than a Saturday Night Special and the build quality is significantly lighter. They sound okay, but are featherweights in current/voltage "slam" department. Hurt your eyes pretty, though........