Last updated: 31 December 2003
Subject: ETX125 Dec lock not tightening Date: 12/29/03, 11:32 From: Theodore Solgot (TedS@mosquitomagnet.com) I think the subject line says it in a nutshell. The lock will turn and turn without tightening, I can achieve a position where it has some resistance but will not tighten down, threads are OK, not stripped ?? what next? Was never overtightened, just happen to notice this the other night when I tried to lock it in., prior to this it was working 100%. thanks Theodore Solgot American Biophysics Mosquito Magnet North Kingston, RI www.MosquitoMagnet.comMike here: If the tube will not lock into position then I suspect that the Right Tube Adapter has failed. Contact Meade for a replacement.
Thanks for your response Mike, would need to purchase unless there is a fix for this type of problem, unit is out of warrantee, any idea on a price for the replacement part? Meade seems to be closed for the Holidays..btw great site keep up the good work....!Mike here: In the past Meade has provided the RTA for free. It is easy to swap the part. You could attempt to do a repair yourself; see the article "ETX-90EC DEC fix" on the Telescope Tech Tips page.
Thanks for the help MikeAnd an update:
Update on the repair you may want to post this one to your tech tips......after disassembling the right fork tube mount, I discovered that all the internals were working just fine...the original problem being that if I tried to lock the Dec lock, it would not engage the clutch...seems the threaded knurled machine screw was slipping inside where it is pressed into the Dec knob, so no matter how you try to tighten....the knob would turn around the screw..noticed a stress crack in the knob.....solution....switch fork knobs...you really don't need the torque on the dec circle lock..and the smooth surface won't allow
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