I am the owner of a new-to-me ETX-90, apparently, the Premier Edition. The previous, and original, owner said its about 5 or 6 years old and in great shape but it won't track anymore, so I snagged it in what appeared to be a great deal. The previous owner said he used it about 10 times, put it away for a long time and then it quit tracking. (Evidence of leaking batteries looked like the culprit on quick inspection.) He said he removed the cover from the base and then had a change of heart and put it back together.
I knew similar units had experienced an almost predictable set of issues and none of those seemed too tough to remedy... until I opened up the base to assess the damage, that is. Upon opening the base, there it wasn't!! I mean that literally, there was no motor, no drive gears, no control board... only one gear mounted on the central pivot and the roughed-up backside of the circuit board that receives the power and controller cables (the wires and plug for the DEC motor was still there, thankfully). How this miracle of selective tele-deportation took place is likely limited to assertions directed at his lack of mechanical skills... and his honesty, I suspect.
I have fixed my share of ridiculously tortuous gizmos in my day but, more often than not, I had something to look at to start with. I was hoping just to fix a stuck gear, broken plastic piece or soiled circuit board - something, anything!! There was nothing there to fix! And nothing to reference for obtaining replacement parts. I called around since the actual ID of the model was still in question, but now it looks like its an ETX-90PE (with the star field print on the tube and most parts for an LNT sensor).
My request of visitors to this post is for pictures of the innards behind the bottom plate on this particular model - and what might be under that, if available, since the empty base plate would go a long way to confirm the correct parts to look for. Also if someone has some part numbers, that would be fantastic! I have seen a few photos in this forum of what I only think is the as my model but I can't be sure, especially since I got two totally different answers from the Meade tech support today. One says each sub-model of the ETX-90 has a different motor and drive assembly and, then, on a second call (that was supposed to be just a follow-up), the tech guy said they are all the same.
Any help would be much appreciated!