Guide :Optics : ETX-125EC (500 x 127mm) Telescope

Meade ETX-125EC Telescope Problem

Someone connected an incorrect power supply and now the scope will not power up.Are there any circuit breaker/fuse links I can check?

Research, Knowledge and Information :

Meade ETX125EC Telescope w/Electronic Controller ...

... Meade ETX125EC Telescope w/Electronic Controller ... The problem for us was that the telescope worked ... 5.0 out of 5 stars Meade ETX 125EC is a Great Telescope - : Meade ETX90EC Telescope w/Electronic Controller ...

Meade ETX90EC Telescope w/Electronic Controller ... The Meade ETX-90EC is specially designed to beportable and used in ... The problem turned out a worm gear shaft ...

Meade Instruments - Official Site

Meade Instruments: A world leader in the manufacturing of Telescopes, Solar Telescopes, Microscopes, Optics, Binoculars, for amateur astronomers and hobbyists
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Meade Instruments Corporation - Frequently Asked Questions

Meade Instruments Corporation ... Meade recommends that you let ... Is there a problem with the telescope? A: The ETX telescope optics are shipped with the ...
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ETX-125EC Reviewed by Sky & Telescope

As mentioned in our first-look review of the Meade ETX-125EC telescope, Meade ... optical recipe than the 90-mm ETX. Neither problem detracted from the ...
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Getting reacquainted with my Meade ETX 125 EC - User Reviews ...

Getting reacquainted with my Meade ETX 125 EC By George Stonebreaker ... sometimes a very real problem, ... off on the ETX 125EC MAK telescope because it is ...
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ETX-90 Declination Knob Fix

Declination Knob Fix. This article may be of use to owners of the Meade ETX- series telescopes ... The problem is that this lever is not metal as it should be ...
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ETX Manual.pdf - Rice University - Web Services

Never use a Meade ®ETX Astro Telescope to look at the Sun!Looking at or near the Sun will cause instant and irreversible damage to your eye. Eye damage is often
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ETX-Autostar Field Guide Book - AstroSurf

ETX-Autostar Field Guide Book ... The Meade ETX-Autostar Telescope Field ... The plan was to sell the ETX-90EC after I finished with this book and keep the ETX-125EC.
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ETX-125 Repair - Astro-Tom

The Meade ETX-125 EC Telescope with Autostar: ... he assured me that he would not only fix the problem inside of ... the ETX-125EC to finish up my Lunar Messier ...
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Suggested Questions And Answer :

PROBLEM WITH ETX125 The manual focus bar will not focus the telescope. Sent into Meade TWICE (once under warranty, once not!) and same problem reappeared AGAIN within months. I don't use the electronic focusing device. The problem is NOT the knob--it works. Problem is the pin focusing the OTA does not cause it to move. Anyone know how to take the OTA apart on a ETX125? I don't want to pay Meade another $150 bucks to get the same problem back!

You will find assembly and dis-assembly instructions with pictures on the Mighty ETX web site.Be very careful because all the wiring runs through the central bolt in the base and can be easily broken. Here are some good links:
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The telescope will not move up and down - Meade ETX-125EC (500 x 127mm) Telescope

You do have fresh batteries? Does the light come on -- on the control panel? Does the hand controller light up?We need more information to answer you-- but for repairs you will need to return it to Meade. Call them here:
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Meade ETX-125EC Telescope Problem

Well, when I got the unit, indeed it would not power up at all. I could see no burning or signs of arcing.I looked online for an internal picture of the drive and fitted the cables back in according to the image.Tadahhhh, one working drive, only works on the 12v though, Batteries wont work although I have measured the voltage and they are all fully charged. Seems the previous owner had removed the looms and put them back incorrectly.
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My Meade ETX-125EC Telescope has a broken horizontal lock lever where can I get a replacement? thanks

Meade can probably sell you one : might also find something that would work to tighten it at a well stocked hardware store.
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Not getting power to the drive motors - Meade ETX-125EC (500 x 127mm) Telescope

I own an ETX90. Is the power light on the computer control panel ON?If yes then the board is probably OK. If NO- either the power cable is bad or the board is blown.Try a new power cable first, and or install batteries and see if that works. If the light is on you could have a loose wire inside. Re-seat the connections inside the base. Read these instructions: it still does not work you can send it back to Meade for repairs. Call them about that here:
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Focus. Knob is tight - Meade ETX-125EC (500 x 127mm) Telescope

Remove the OTA from the rear cell; unscrew the focuser shaft about half way (CCW) and remove the knob or electric focuser unit; there are three very small hex cap screws which hold the OTA into the rear cell; remove these and save in a tuna can or similar, because they WILL get lost if you place on the countertop. Once done, merely grasp the blue OTA in one hand with a rubber glove for grip and the rear cell/fork arms in the other hand and pull gently NOT twist while separating! You will see where the threaded focus rod inserts into the OTA....typically binding is causing the shifting, but most of this is due to poor milling by Meade on some 125 models. You can improve these imperfect models greatly, but do not expect to eliminate all focus shift. Run the focus rod gently all the way CCW until you feel NOT force or you will damage. Once there apply a thick grease, such as pure white Lithium (available in the tool dept. at Lowes) in a very thin layer, pushing hard into the NOT apply too much or you risk getting this stuff on the optics eventually. Once done, put the knob on the rod temporarily and run it in and out all the way slowly about 3-4 times. Once done, run it HALF-WAY between all the way and all the way out and stop. At that position, turn the OTA to about a 45-degree tilt, with corrector down and put 1-2 DROPS of 3-in-1 oil right where the threaded rod goes into the threaded rear cell of the scope and QUICKLY run the focuser CLOCKWISE to get that thin bit of oil into the rear cell threads. Once done, run the threaded rod slowly all the way CW and then CCW about 2 more times. This procedure will greatly improve the performance....NOTE: do NOT put more than 2 drops of oil on the rod!
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Autostar I recently purchased a used ETX-125EC. There is only one problem. The autostar screen does not show or do anything. The batteries are installed correctly, the controller is plugged into the correct port and the power light turns on on the telescope base. There is even a faint red light from the auto star screen. Does this mean I need a new controller or is there something more dubious at work here?

Double check the cable from the Autostar to the telescope. Sometimes the ends go bad. They can be replaced with regular telephone cables.
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Battery connection I was about to set up my telescope (meade etx125) and I heard something loose rattling around inside. I removed the bottom and a piece of plastic fell out, from one of the screw fittings. That's not the problem. When I tried to catch this as it fell I pulled the battery connector wires out. I know an excellent soldering guy, but I would like to know where they were connected. Just to be sure. I hate setting up this telescope as it is. So any help would be great.

Hopefully you pulled out the ones that simple plug back in! -- check out the Mighty ETX web site for disassembly instructions--
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