I thought I'd share this solution on the off-chance someone else experiences the same problem.The tray open/close process is driven by a separate motor from the disk mechanism. The drive is transferred from the motor pulley to a separate plastic pulley/pinion (toothed gear section sharing a common axis with the pulley).
The pinion engages with a toothed rack on the tray and the rotation of the pulley/pinion opens and closes the tray.
After a time the plastic teeth of the pinion break off, resulting the "juddery" movement of the tray.
One our local importers carries a stock of these pulley/pinion replacements and came round to the house this evening and replaced the faulty pulley/pinion for the princely sum of R300.00 (~$40.00) including the call-out.
So, all is hunky-dory once more and I am a happy camper again.. :-)
"Don't roll those blood-shot eyes at me!"
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Topic - Theta Data Basic II - Tray Mechanism Judder - Fixed - DevillEars 09:11:56 11/21/06 (0)