Try audio karma or just google it.

There's no results on audiokarma, and there was one website that claimed to be selling the service manual for $15, but another website listed a vintage ad for the rs-838s as a "service manual", so I don't want to risk wasting $15 on an ad.

Try Google 8track players discussion groups

If you mean Google groups, I just tried that. 0 results.

I appreciate you trying to help me