Hi There,
I am indeed the owner of two PX-100Ms, but my journey has not been an entirely smooth one! Both of my 'tables are with Vantage Audio in the UK...the first PX-100M I bought, back in 2004, had speed stability issues - I then managed to obtain a second, working example, which is currently being used to find out what is wrong with the first PX-100M!
I know that Frank Schroder has observed that connecting a certain earthing arrangement causes problems for his PX-100M, which is otherwise working perfectly. I am, interestingly, thinking of using my Dynavector DV-505 on my PX-100M, with an Ortofon Winfield cartridge...that said, I might just wait to see how you get on, in the light of your possible changes! (lol)
I would be interested to hear of your experiences with your Onkyo PX-100M...have you observed any 'strange behaviour', or is it a faultless gem every time! lol
Best Wishes,
Paul