Question about Meade ETX90AT Maksutov Telescope with UHTC (cat35140321)

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I have this older ETX-90 telescope. It uses 3 AA batteries to power the motor for the clock-drive. Obviously the motor runs on 4.5 volts. What I would like to know is how much current the motor draws . . . probably in milliamps. Thank you, Gene A. Swanson docotrgas36@skybeam.com

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Contact Meade customer service -- they can tell you--

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

Posted on Jan 17, 2011

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I have a Meade ETX-70. When turned on, the handset says there is a Motor Unit Fault: Motor failure detected due to moving handset between scopes, low battery level, obstructed or overloaded scope. I've...


This is usually caused by low battery power-- as the hand controller reported. DO NOT USE rechargeable batteries they do not have enough volts. Use alkaline batteries only.

This can also be caused by a broken gear or a failed internal motor. You can return these to Meade for repair.

Here is the contact number:
http://www.meade.com/support/index.html

Sep 14, 2011 | Meade ETX-70 (240 x 70mm) Telescope

1 Answer

I just bought a used ETX125 PE the motor that lifts the scope seems to power out,or simple cannot swing up!


Are you using the internal batteries? Are they fresh and fully charged?

Replace them and try again; or better get a seperate 12 volt power pack and the correct Meade 12 volt cigarette lighter style power cable.

Feb 27, 2011 | Meade ETX-125PE (500 x 127mm) Telescope

1 Answer

I have a meade telescope ETX-90 that a friend just gave to me .When i went to change the batteries i found the batteries where corroded and one of the contacts where broken. How do i get this fixed?


You can send it back to Meade but they will charge you several hundreds of dollars.

Why not just buy a separate 12 volt power pack and run the scope using that and the proper cigarette lighter style power plug. That's what I do on my ETX125 and I never even put any batteries inside -- the scope will perform better with a solid 12 volt power supply.

Feb 12, 2011 | Optics

1 Answer

I have a 10 year old Meade LX10 with Magellan computer. Do I need a separate power supply for the declination motor?


No, just one--- this scope runs off of 12 volt DC battery like a car starter battery pack-- that has a cigarette lighter style 12 volt cable. This plugs into the power console on the telescope. You need the proper 12 volt cable which you can get from Meade and other telescope retailers--

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

Sep 27, 2010 | Meade 8" LX90 Schmidt-Cassegrain Telescope...

1 Answer

Ik wil graag een Nederlandse handleiding voor de Meade ETX 90


Meade has all of their ENGLISH language manuals on this web site.
http://www.meade.com/manuals/index.html

Here is your telescope- ETX90
http://www.meade.com/manuals/TelescopeManuals/ETXtelescopes/ETX-90%20w-autostar%20man.pdf

A dealer in the Nederland may have one in your language. Locate a nearby telescope shop.

Apr 27, 2010 | Meade ETX-90EC (325 x 90mm) Telescope

1 Answer

60at motor fault


Could be several things:

You did Train the drives and CALIBRATED motors using the same power source you will use outside?

Do not run off of the internal batteries UNLESS they are brand new. Once the batteries drop below about 70% the hand controller goes a little crazy. That's why most people use an external power pack.

1. Replace the batteries, and do a Calibrate motors.

Did this fix it?


Mar 21, 2010 | Meade ETX-60 AT Telescope

1 Answer

I purchased a used etx90ec. Two of the battery terminals are moderately corroded. The lights on the control do not come on and it doesn't work.


If you can clean up the battery terminals with sandpaper, then you will need to try an outside power source.

Buy either the 110 volt adapter or BETTER but a 12 volt power pack at Wal Mart (the kind you use to start a car) make sure it has a 12 volt cigarette lighter style plug.

You can buy either the 12 volt power cable or tthe 110 volt adapter from www.scopestuff.com. I never use the internal batteries, always a 12 volt power pack. The ETX likes steady 12 volt current.

If it does not work with the outside power source then something is burned out on the main board. You will need to return it to Meade for repairs. Here are several links you need.

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

http://scopestuff.com/ss_cig1.htm the 12 volt cable

Dec 10, 2009 | Meade ETX-90EC (325 x 90mm) Telescope

1 Answer

HI! I own a Meade ETX-90 telescope. The right ascension drive does not engage. Do you have any troubleshooting suggestions on how I might go about fixing it? Best, Mara


Go to the Mighty ETX web site and look around for all the repair and disassemble topics.

http://www.weasner.com/etx/menu.html

Jun 29, 2009 | Optics

1 Answer

Need instruction manual for 1996 or 1997 etx 90 basic model


The manuals are all available to download from www.meade.com.

If your scope has the motor drives and a control panel into which a controller could be plugged, then you just need to buy an Autostar 497 - always available on eBay for about £85. However, there are older models of the ETX which only have one motor or as a spotting scope for terrrestrial use with no motors - Autostar cannot be connected to these.

Look at the pictures of scopes on eBay which come with Autostar - if your looks like these, Autostar will fit. Else you are out of luck!

Apr 11, 2009 | Meade ETX-90 (48x90 mm)

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