to repair an older turntable or not?

I have a Sony PS-FL77 linear tracking turntable circa 1986. It has a "Biotracer" tonearm where any imperfections in the surface are counteracted by the tonearm. The tonearm is automated--you press a start button, the record spins up the tonearm lifts, moves over to the left, then lowers. There's a "cue button which will raise and lower the tonearm as well as right and left directional arrows, should you want to manually move to the next track. The problem is that the tonearm will not lower. I can nudge it with my finger at it will then lower and play like it should. So I'm wondering if it is worth the money to have it repaired (if I could find someone to repair it). Assuming any repair on the low end could run $150 to $200, should I just consider putting that toward something else? I've read a few positives on the Biotracer aspect but it seems like it can now be considered an over-engineered feature. More info here: http://www.vinylengine.com/library/sony/ps-fl77.sh...

Any insight would be appreciated.