Question about Celestron CPC 925 XLT (555 x 235mm) Telescope

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Tapping sound I have a tapping sound coming from the base of my telescope during tracking it come and goes the cluch is ok I have ajusted the worm gear which has made no difference I still tracks with no problems but at high powers you can see the movment in the eyepiece. This same problem has being put onto cloudynights forum by other onwers of cpc telescopes cheers John Murray

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The answer is this Cludy Night topic-- the bearings are too TIGHT!

Read this--

Posted on May 16, 2009


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Gear box on a

hi there it sounds like the dogs on the first gear are damaged and need to be straight cut or just replace the gear ,this is a pretty big job so a dealer might be the best place to take it cheers pete

Mar 13, 2014 | 1998 Gas Gas EC 250

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Camera will not come on but green light flashes and camera makes three beeping sounds. Already changed batteries and still same thing when powered on. What could be causing this problem?

The reason why your Samsung Digimax S500 camera beeps 3 times and shuts down is because the internal workings of the telescoping / retracting lens barrels may be damaged beyond reasonable repair, of the casual user, and the internal circuitry senses the malfunction.

And to open up and attempt to service any digital camera, with an electronic flash, is a dangerous proposition. The Samsung Digimax S500, for example, has an internal 320 Volt, 110 microfarad photo-flash capacitor that, if accidentally touched, would hit you like a stun gun. In fact, I had to discharge the capacitor by bridging two soldered contacts (just to the upper-left and upper-right of the "53", of the "STS2-53-SR" printed on the internal circuit board). And, even though I was careful to use an old, worn out flat-head screwdriver, electrically grounded (MUST have an insulated wooden or plastic handle), the discharge arc was so violent that it destroyed the tip of the screwdriver.

And don't think that the telescoping / retracting lens barrel can be "gently forced" open or closed, as the tiny DC motor has a plastic worm-gear on its shaft, initiating torque to a miniature train of 7 plastic spur gears, before reaching the final plastic spur gear track, 120 degrees part-way around the large outside lens barrel. So, to make a long story short, any attempt to manually move the lens barrel out, or in, will most certainly damage the spur gears, as absolutely no manual movement is possible at the worm gear on the motor shaft. And, anyway, the geared motor drive provides more than enough torque, by itself, to extend / retract the lens barrel, unless there is grit and debris interfering with the smooth motion of the gears and angled slots.

Sand, grit, and other debris can sometimes find its way between both lens barrels, and into the curved, 120 degree spur gear track. And since the 120 degree spur gear track is not lubricated, it can possibly be cleaned by very lightly tapping the camera on a table top, with the lens down (this is assuming that both lens barrels are fully retracted) , to loosen any debris, and then using a vacuum cleaner: Taking care to apply the open nozzle of the vacuum cleaner, tilted (to reduce its intensity), but directly on the perimeter of both lens barrels, so as not to **** the lens barrels out, yet apply a strong vacuum into the narrow grooves.

This may damage your camera -but do you really have a choice?

Also, a piece of paper can easily inserted between the lens barrels and run along the circumference to help clean out some of the grit. And repeat the process above, until the lens works.

But that's assuming that the problem is caused by dirt and grit in the inner workings of the lens.

The other cause for the telescoping / retracting lens barrel to malfunction is either the camera was dropped (while the lens barrels were extended), or the camera "POWER" button was somehow depressed while the camera was stowed away, and the lens barrel was prevented from extending. Either situations will break off 2 teeth of the final circular plastic spur gear, that powers the 120 degree spur gear track on the outer lens barrel. If you know either of these to be the case, then your camera cannot be fixed, and a repair would probably cost more than the camera.

Dec 04, 2011 | Samsung Digimax S500 Digital Camera

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My problem is the telescope can not rotate to the left and when it does i hear gears noise

The worm gear in the base may have come loose. You can either return it to Meade for repairs or open up the bottom and try to see what is either loose or broken.

This site can help you:

Apr 21, 2011 | Meade ETX-125PE (500 x 127mm) Telescope

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Motor tries but cannot move on the horizontal. Moves fine on the vertical. Usage only in Alt/Az mode. Only have the electronic controller that came with the scope.

You did tighten the AZ clutch? You did start from the HOME position? (turn the scope Counterclockwise to the hard stop)

Then you will either have to send it back to Meade for repairs, or open the bottom of the base, and look inside and see if the AZ worm gear is actually meshing with the motor. It could have come loose.

Meade customer service:

Oct 08, 2010 | Meade ETX-125EC (500 x 127mm) Telescope

1 Answer

How to ajust softail shocks ? when i go over rr tracks or bumps on the highway it bottoms out and i have a 200 mm tire on the back and it hits the inside of the fender, i also have another question, when i...

The preload for the shocks is on the shocks themselves which are under the bike make sure you turn them both in the same amount.2nd problem could be your clutch needs adjustment and or you have to much primary fluid in it.You should only fill the primary to the botttom of the diaframe spring to much creates drag and if cluch is out of adjustment creates drag

May 29, 2010 | 2003 Harley Davidson FXSTD Softail Deuce

1 Answer

Meade ETX-60 Horizontal drive

The AZ worm gear is not engaging the gears. There is a spring next to the gear which applies pressure -- open up the base and see if the spring is loose or broken.

May 23, 2010 | Meade ETX-60 AT Telescope

1 Answer

Azimuth motor stalling missing the electronic home sensor

Check for binding in the gears; my 10" had aluminium chips in the fork base that jammed the gear. Cured by removing the RA manual adjust assembly - was useless anyway, as it could only be used with the RA unlocked. One setscrew in the fork base holds it in place,just loosen and pull up.

Apr 16, 2009 | Meade LX200GPS Telescope

1 Answer

Azimuth motor gearing problem

Sounds like it could be that the worm gear is not meshing
Look here for guidelines in the internals

Oct 15, 2008 | Meade ETX-125EC (500 x 127mm) Telescope

1 Answer

Meade LX200 10" - RA Gears slip when mounted on wedge (Milburn)

The problem is the addition of the 80mm telescope to the assembly. The telescope is now out of balance, and places extra weight off-center as the position chages. Too great an off-balance will cause the main gears to 'jump' the worm teeth. The solution is to restore balance by adding counter weights as needed. Loosten the axis locks (carefully) and see which direction it wants to move. To balance my LX, I used a small bag with lead buckshot to determine how much weight was needed and where to achieve balance. Then I added fixed weights to the mount. Once this is done, the scope should track has balance kits at reasonable prices.

Feb 03, 2008 | Meade LX200GPS Telescope

1 Answer

Altimeter worm gear and gear assembly

I may have the parts you need, but cannot tell from your description of the failure. Contact me if you would like to discuss this further pinyachta at hotmail dot com. George

Nov 06, 2007 | Meade DS-2114 ATS (325 x 114mm) Telescope

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