Meade etx70at telescope drive works in up/down but in left/right, motor runs but telescope does not turn regardless of friction position. can it be lo battery voltage?

Calibrate motors and then TRAIN the drives-- this sets the gear backlash.

You should Calibrate motors every time you take it outside and Train drives at least once every year. The symptom you describe is called "rubberbanding".

Train the drives.

I dont think is the dust problem ..but if you are handy enough open it and take a look ..probably ..if it the same motor for both actions ..it has a drive belt or a gear to operate that it is not OK ...and it will be visible ...If it is a 2 motors operable ..one of them is defective ..and need to be changed..

The knob on the fork arm is tightened? Correct. You can slew manually, but cannot do a two star alignment?

Is all of this correct? Post a reply with additional information.

You have trained the drives -- correct?

The Azimuth clutch is slipping-- have you tightened the knob in the center of the base-- push the handle to the left. There is a tiny set screw on the side of the knob -- you can loosen it and remove the knob and position it further to the RIGHT on the bolt.

Return it to Meade for repair--

Here:
http://www.meade.com/support/index.html

Call Meade customer service here:
http://www.meade.com/support/index.html

Either the altitude clutch is broken or the motor has failed. Contact Meade customer service:
http://www.meade.com/support/index.html

You never said what model. The CD ROM only contains free planetarium software which you can also down load on Meade's web site here:

www.meade.com look under the Customer Service link.

Motor Faults are usually caused by low power and or a broken part.

If you have CALIBRATE MOTORS feature in the hand controller do this first. If it still does not work, RESET the hand controller, reenter date, time, and SITE, and calibrate motors again.

If this does not work something is broken inside the scope.

You need to tighten the friction lock - it acts as a slip clutch.

Could be just a bad cable. Contact Meade customer service.

http://www.meade.com/support/index.html