?

Michael

While alcohol is a good cleaner, it can absorb moisture later.? Moisture and electricity leads to corosion/dendrites.? If you can, after cleaning with alcohol, further clean it with brake cleaner that evaporates and doesnt leave a residue.? If using a substance like brake cleaner bothers you, be aware that leaving the controller electronics outside leads to moisture (i.e., dew) condensing on the printed circuit board even if under the cover outside.??

Years ago, my company was facing corosion and we tried several conformal coats (green goop you see on some circuit boards).? They do ok but DO NOT PREVENT MOISTURE INFILTRATION. There are conformal coats that will prevent moisture infiltration but make it 100 times harder to repair later and greatly add to manufacturing costs.? So the "green goop" is a compromise as it prevents some moisture infiltration and is easier to rework.? Further, goop applied does not cover every nook and cranny allowing moisture to do its magic.

So my suggestion is to remove the electronics and bring it inside in moist environments.

Chuck

Sent from my Samsung Galaxy Tab?|PRO

-------- Original message --------
From: "Michael Herman mherman346@... [Losmandy_users]" <Losmandy_users@yahoogroups.com>
Date: 11/30/2017 7:21 AM (GMT-08:00)
To: Losmandy_users@...
Subject: Re: [Losmandy_users] Gemini 1 Internal Battery holder Sensitivity

?

Lucky discovery.? To lose 3 units at once... a nightmare.??

You might want to also pull out the Gemini1 board from each unit, and examine the top and bottom for corrosion that could cause shorter battery life....especially the unit that had water in it.

If you do see corrosion or discoloration, you can usually clean it up with alcohol and a cotton swab.

Anyway, glad you solved your trouble.

Best,

Michael?

On Nov 30, 2017 5:59 AM, "j.blazey@... [Losmandy_users]" <Losmandy_users@yahoogroups.com> wrote:

?

Boy, I was going crazy as all three of my Gem I controllers were going crazy with the same gibberish at start up within a couple of weeks of each other.? One was left outside undercover and had water pouring out of it from condensation (which is a different story).? All were connected to my MI-250.? I swapped EVERYTHING out and set up all controllers inside on my G11.? After hours of fussing around and changing out paddles, cables, internal batteries and checking their voltages, I noticed that the batteries seemed rather loose in their holders.? I typically have to man-handle the clips to get the old batteries out but there have been no problems at all over the years, even with dead batteries.? Then BAM, trouble.??

So, I mashed the clips down before inserting new batteries (again!), bending them as much as I could.? I then inserted the new batteries, noting that the fits were tight to the point that I had difficulty even rotating the batteries in the holders.

And now everything seems to be working just fine.??

Jeff

?

Magnus,

The brass worm is really only needed on the RA, but having it on both axes gives you a spare, if ever needed. Getting the adjustment correct for the stock system goes a long way for performance. That means having both bearing blocks square to each other and having enough backlash for no binding and no lateral movement of the worm.?

What I did years ago before the brass worm was available was use a cordless drill to drive the worm for 15 minutes in each direct with the finest lapping fluid I could find. Did a thorough clean up and readjustment. Was able to cut the backlash needed in half.?

Don?

Verizon Wireless 4G LTE

-------- Original message --------
From: "jfev5mnsvqiyzpq756wvokt55jve7sbg2esr5mip@... [Losmandy_users]" <Losmandy_users@yahoogroups.com>
Date: 11/30/2017 2:20 PM (GMT-05:00)
To: Losmandy_users@...
Subject: [Losmandy_users] High precison worm vs OPW-11?

Hi!

There has been tons of discussions on worm gears, but as I see more about OPW vs Ovision. My G11 apparently has the older stainless steel worms, so an upgrade is imminent. However, at least at Telescope Express, the high precision worm is sold, without the blocks and all:


So the same 3-piece system I have now, but a better worm. Now, is that what I should do, or should I pay sbustantially more and get the OPW-11? How much do I gain from the one-piece device?

Or is the high precision worm only useable with the one-piece system? It is sold both with and without the worm, which confuses me.. As on Losmandy's page:

http://www.losmandy.com/access.html

And how does these upgrades compare to the belville washer solution? Or is that just for DEC and the high precision worm just for RA.....?

Magnus

?

Boy, I was going crazy as all three of my Gem I controllers were going crazy with the same gibberish at start up within a couple of weeks of each other.? One was left outside undercover and had water pouring out of it from condensation (which is a different story).? All were connected to my MI-250.? I swapped EVERYTHING out and set up all controllers inside on my G11.? After hours of fussing around and changing out paddles, cables, internal batteries and checking their voltages, I noticed that the batteries seemed rather loose in their holders.? I typically have to man-handle the clips to get the old batteries out but there have been no problems at all over the years, even with dead batteries.? Then BAM, trouble.??

So, I mashed the clips down before inserting new batteries (again!), bending them as much as I could.? I then inserted the new batteries, noting that the fits were tight to the point that I had difficulty even rotating the batteries in the holders.

And now everything seems to be working just fine.??

Jeff