Question about Meade 8" LX90 LNT Schmidt Cassegrain Telescope with SmartFinder w/ FREE UPS

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Lx 90 gps

What is the polarity of meades external power supply + or - tip
please

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I have an older one, without electronics just a tracking motor, and that one has a positive polarity tip.

Posted on Jul 16, 2008

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I have a 10" LX


You can return these to Meade for repair--

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

or you can send it to Dr. Clay in Arkansas for a Supercharge and he will repair it-
http://www.arksky.org/supercharge.htm


www.telescopeman.org
www.telescopeman.us
www.telescopeman.info

Sep 16, 2011 | Meade Optics

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Can I use a 12 volt DC power supply with the Meade 4504 scope? I have a missing battery pack...and the input power says 15 volts Mant thanks


Yes you can just make sure that the power cord has the CORRECT pin polarity- you can order the 12 volt cigarette lighter style cord from Meade.
http://www.meade.com/support/index.html

Jun 27, 2011 | Meade 114EQDH4 (36 x 114mm) Telescope

1 Answer

I have an older, let's say "classic" LX-90. My


You can try Three things:

1. Do you have fully charged batteries-- or a good power supply.

2. Sometimes the cable to the hand controller needs to be replaced

3. Execute a RESET on the hand controller and reload the firmware--

If these do not fix it, the hand controller is defective and must be replaced. You can find a used 497 controller for about $80 on AstroMart.com

and Meade can also sell you a new one.

Mar 07, 2011 | Meade LX90 8 (500 x 203mm) Telescope

1 Answer

Meade lx-90 dec printed circuit board bad. where


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?

Jan 28, 2010 | Meade 8 Inch LX90 LNT Schmidt Cassegrain -...

2 Answers

I have a meade 4501 telescope. It has an


See if a manual is listed on the Meade site Here:
http://www.meade.com/manuals/index.html


That shows the power supply voltage.

Jul 12, 2009 | Meade Optics

1 Answer

When i turn my LX-90 8" telescope the GPS is not working.


After you RESET the telescope-- it returns to factory default settings--

1. Calibrate Motors

2. Train Drives

3. Set Time, Date, Site, and Daylight Savings Time to NO right now in USA

4. Calibrate Sensors on Polaris

5. Do an Automatic Alignment--

Here are all of Meade's manuals on line--
http://www.meade.com/manuals/index.html

Dec 30, 2008 | Meade 8" LX90 Schmidt-Cassegrain Telescope...

1 Answer

Blowing fuses in power supply


One thing to check, would be the filter capacitator that is on the front circuit board. They are known to become shorted. The cap is fairly large, and may be mounted on the side of the circuit board that faces the front panel. Clip one lead, and apply power. If the fuse does not blow, then that is it. A second possible component, is the polarity protection diode, that is near the power jack, next to the fuse. If it is shorted, then the fuse will blow every time.

Aug 21, 2008 | Optics

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