Celestron CGE lockup
Posted 23 June 2010 - 11:57 AM
Posted 23 June 2010 - 12:31 PM
What a nightmare. I wouldn't know what to suggest at this stage apart from check all cable connections, check the boards for fizzled chips, the list goes on. Suffice to say I know EXACTLY how you feel.
This thread might help & it might not too!
Posted 23 June 2010 - 01:00 PM
Posted 23 June 2010 - 01:24 PM
Posted 23 June 2010 - 05:45 PM
Also, check the grounding of the DEC and RA cables. The cables ground out though the shell of the connector. If the ground is flakey, you can get weird symptoms.
Posted 23 June 2010 - 05:58 PM
Anyway, I don't think the HC gets overly temp. effected. I imaged with mine in winter in WV for the first 18 months & the only thing I saw was the scrolling read out was slower than normal.
Posted 24 June 2010 - 01:54 AM
Posted 24 June 2010 - 02:56 PM
Another issue I had was a "receiving data" message on power-up. I clipped the mod plug and put on a new one and that solved this issue. After that it was fine even on the longer sessions.
Posted 25 June 2010 - 12:17 PM
Posted 25 June 2010 - 12:43 PM
Posted 25 June 2010 - 01:03 PM
Posted 26 June 2010 - 01:17 PM
Unfortunately they are about 9 hours away. This morning I opened the observatory and did a tour of about 9 objects, found Jupiter (during the day) and then put the hand controller in a small ice chest with gel packs around it. after 10 minutes it was still working perfectly, but after 20-25 minutes it quit working and locked up again exactly as before---nothing worked. I then heated it with a hair dryer until it felt quite warm, left it sit for another 20 minutes, turned it off and on, unplugged and replugged it in all three ports, jiggeld every wire I could but nothing would bring it back to life. So, I then put the scope in home position manually, put everything away. Closed the roof of the OBS., turned it back on again and it worked just fine. It may or may not have gone dead due to cold temperature or maybe just the amount of time that it was on. I am beginning to suspect that it has something to do with one of the position sensors, since it seems to come back quickly after repositioning the scope manually. WHO KNOWS AT THIS POINT. At least now I know that warming it does not bring it back to life.
Well I know what I'd be doing If I were within driving distance of Celestron lol..
Posted 26 June 2010 - 03:31 PM
Posted 26 June 2010 - 03:59 PM
Posted 27 June 2010 - 01:25 AM
At least you only seem to be getting ONE error, which can make it easier to diagnose..
Posted 27 June 2010 - 04:50 PM
Posted 28 June 2010 - 10:10 PM
Posted 29 June 2010 - 12:14 AM
Posted 02 July 2010 - 10:20 AM
Its actally worse than that. They said that they have done everything required under the warranty and will not be offering exchange or replacement for a mount that is working properly.------They believe that I am making all this up I guess since they could not reproduce the problem at the factory. I guess I will just have to use it until it quits again and then see what they have to say. May have to get a lawyer-------
I'll have to think about your question for about .2 of a millisecond...
Posted 02 July 2010 - 10:25 AM
Posted 03 July 2010 - 04:40 AM
Posted 03 July 2010 - 08:17 AM
There have been a few cases were people have esentially rebuilt their CGE mounts using after=market connectors (and this is a big job that I DON'T recommend unless you have some soldering skill and light mechanical ability) and in those cases, ALL of the ills of the CGE erratic behavior have COMPLETELY disappeared. I have seen the reports right here on these forums with a link to a page that showed the modifications.
I have also had different mounts over the years that had problems with the spring contacts in the female RJ connectors. In some mounts, I have had to actually reach under these contacts with a tool with a tiny hook at the end (the tool is called a Spring Hook) and GENTLY reform the contacts that press up against the male jack on the cable. This has cured at least two LXD-55s of intermittent problems, and one CG5 ASGT.
You might also try a contact cleaner called DeuxIT This is a contact cleaner.
I think that the problem is that RJ type jacks were never really intended for use outside, and they are supposed to be "Self Cleaning" which means that when you and re-insert the connector, the contacts are supposed to "Wipe" against one another. The problem that I see is that these contacts are used in an environment where dewing is likely and corrosion may build up on the contacts. Just a guess. I don't know for sure, but I DO know that I have had a problem with several mounts from both Celestron and Meade in this area.
DeoxIT is available from Parts Express and locally at Radio Shack or Fry's Electronics.
Posted 03 July 2010 - 08:30 AM
If I ever received treatment like that from a company it would be the last time they would EVER see me.
Be sure to tell them about this thread, too.
Posted 03 July 2010 - 01:05 PM
If it's (whatever the cause) not the section cabling/interconnection for the motion heads electronically that is causing the issue, he's still got a showstopping intermittant problem. The HC goes through one pass thru board (the one it connects to on the pier - not a shield ground use conx) and to the NXW 432 board again passed thru (this is the power connx board with the battery) then to the M/C board. There is some logic on the 432 board that may affect it I think? Here's an image of the back...