My lx90 scope was working fine until the other night and the elevation motor stopped...the hand box indicated that the motor was not working.
I reset the system, and the elevation motor worked erratically, on, off, on, off....so I reset it again, and now no elevation motor function at all. The rotational motor (azimuth?) works ok... all speeds ok, but the altitude motor won't function.
I would like to get a hold of a break-away parts diagram and any help to get this motor running again.
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Once you are polar aligned, rotate the tube to a star in the sky that you KNOW the name of. Look up the Right Ascension of that star on a cell phone app or a laptop planetarium program like this one: www.stellarium.org
Rotate the RA setting circle so it matches what the phone or laptop indicate. LOCK down the RA circle. Your scope is now adjusted to the sky and you can use the numbers on the DEC and RA to find other objects of known RA & DEC.
Since you already disassembled the scope-- you can send the board to Ron Sampson and he should be able to repair it. He fixes main boards and hand controllers (including the screen and keyboard on the hand controller!)
If you post a message on the Yahoo LX90 group looking for Ron Sampson he will answer you. You can then email or phone him for instruction on how to send him the board.
ARE YOU SURE it's the board? It could be a bad keyboard or a bad cable on the hand controller. You should get another hand controller and cable and test it before you send it off. Can you borrow a hand controller and cable from anyone.... or from a local scope retailer?
This is called "rubber-banding". Your scope needs to be re-trained.
So, setup a target during the day at least 100 feet away from the scope (200 feet would be better, Calibrate motors using the same power source you use at night, and Train Drives. Later after dark, do a Calibrate sensors on Polaris.
You should train drives about once per year, and calibrate sensors about twice per year.
You may want to update the firmware before you Train Drives. The latest version is 43Eg available on the Meade.com web site. You with need the Autostar Updater Software also available on the Meade web site under Customer Service---- Downloads. Version 5.9
Could be that the DEC motor driver has died. That could be verified by swapping the connections between the RA and DEC. If the DEC now moves, then that is the problem. If not, then the DEC motor is bad.
You will need to check out the clutch mechanism in the fork arm. Refer to this web site for disassembly pictures.
Look under Declination adjustment link off the main page.
www.scopestuff.com sells an upgrade clutch kit that improves the clutch. However if something is broken inside then this must be fixed first. Meade will want the scope returned. They usually do not sell parts; but sometimes they do sell them, so call Customer Service here: http://www.meade.com/support/index.html
Hold the outer portion of the elevation knob and unscrew the screw on top. then pull up on the outer portion and you'll see a silver screw marked with an arrow and the word "Up". Sight the rifle at a known distance and then line up the knob with that distance as you push it down on the scope and replace the screw. I have one of these and figured this out on my own, however I'm missing the mount and would like some pictures and dimensions of the mount if any of you can get some. I'm gonna be machining a new one and would like to keep it as close to the original as possible.
If the hand controller on the LX6 has stopped working you have a problem since meade does not support this very old telescope. My only suggestion would be to place an ad on www.astromart.com looking for a new hand controller.
If the error message indicates a "motor fault" make sure you have a good power supply and or fresh batteries-- as low voltage will cause a motor fault error.
Later you said it was an LX90 LNT-- ?? so which scope do you actually own???
I ended up replacing the Hand Controller with a new one. After that it started working. I brought the new one on E-bay. They seem to have the best prices. Forget about talking to Meade. Their innate ability to reply to your phone calls or emails just doesn't work. I will ***** buy a telescope from them again.