ICEINSPACE
Moon Phase
CURRENT MOON
Waxing Gibbous 82.5%
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22-01-2021, 10:48 AM
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Registered User
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Join Date: Oct 2005
Location: Junortoun Vic
Posts: 8,904
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SW electronic focus motor controller!!!
Not sure what has happened in my life!
I use many (seven at the last count!) of these motors/ controllers.
All the focusers, the etalon tuning etc.
At Xmas one of the handcontrollers failed. Changed batteries, checked connections etc. but no luck....
It's now the 22 Jan and so far I've had another two failures!!!!
I now have three controllers u/s.
I found the wiring diagram and managed to identify most of the components.
Simplistically I think the push buttons have gone to meet their maker.
(These seem to be "TL2285 OE" push buttons -https://www.digikey.com.au/catalog/en/partgroup/tl2285-and-tl4201-series/9456)
I'm definitely not an electronics guy.....but I assume these are replaceable.
Has any one else experienced similar failures????
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22-01-2021, 11:49 AM
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amateur
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Join Date: Jul 2006
Location: Mt Waverley, VIC
Posts: 6,940
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Yes, they are replaceable.
How many failed? Do they work sometimes?
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22-01-2021, 12:08 PM
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Registered User
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Join Date: Oct 2005
Location: Junortoun Vic
Posts: 8,904
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Bojan,
On two of them both buttons don't seem to work, on the third one button still works.
I haven't been able to find an aussie source for these buttons.
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22-01-2021, 12:19 PM
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amateur
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Join Date: Jul 2006
Location: Mt Waverley, VIC
Posts: 6,940
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Last edited by bojan; 22-01-2021 at 12:34 PM.
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22-01-2021, 01:50 PM
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Registered User
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Join Date: Oct 2005
Location: Junortoun Vic
Posts: 8,904
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Bojan,
The 8.5mm eBay version looks like a direct equivalent.
I'll order some, see how we go.
Thanks!
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22-01-2021, 02:25 PM
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Registered User
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Join Date: Dec 2018
Location: Daruka
Posts: 394
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I replace these regularly in my pinpointer for metal detecting.
Super easy, just need some solder, iron, and some gootwick
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22-01-2021, 02:48 PM
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amateur
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Join Date: Jul 2006
Location: Mt Waverley, VIC
Posts: 6,940
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So they seem to be dodgy quality? They should last couple of hundreds of thousands activations..
Quote:
Originally Posted by Pepper
I replace these regularly in my pinpointer for metal detecting.
Super easy, just need some solder, iron, and some gootwick
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22-01-2021, 02:58 PM
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Registered User
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Join Date: Dec 2018
Location: Daruka
Posts: 394
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They probably are ok Bojan. Just the pinpointer gets constantly turned on and off, and being used in dusty/muddy conditions.
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22-01-2021, 04:43 PM
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Registered User
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Join Date: Oct 2005
Location: Junortoun Vic
Posts: 8,904
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Bojan,
I think the quality is probably “cost effective” for the controllers.
I haven’t heard that many others are complaining........
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22-01-2021, 06:55 PM
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Registered User
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Join Date: Nov 2012
Location: Mackay
Posts: 1,656
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I have one with the exact same problem, out of warranty time wise but not a lot of use, so yes a quality problem me thinks.
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22-01-2021, 08:03 PM
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Registered User
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Join Date: Oct 2005
Location: Junortoun Vic
Posts: 8,904
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If the microswitches I’ve ordered work out, I’ll make the “extras” available to the members.
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23-01-2021, 03:50 PM
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Registered User
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Join Date: Jan 2021
Location: Sydney
Posts: 117
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The switches are rated for a lot of actuations, however they hate getting wet, once you have replaced the old ones, crack one open, top guess would be corrosion on the switch foil,
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23-01-2021, 04:15 PM
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Registered User
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Join Date: Oct 2005
Location: Junortoun Vic
Posts: 8,904
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Ryan,
Thanks, but I don’t think my controllers have ever been outside the office.
Certainly not exposed to rain or heavy dust etc.
I’ll definitely pull one apart when the others arrive.
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05-03-2021, 02:09 PM
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Registered User
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Join Date: Oct 2005
Location: Junortoun Vic
Posts: 8,904
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Update:
I ordered "drop in replacement" switches from eBay, and got some desoldering braid.
The switches arrived yesterday, and within 30 mins today I had all three hand controllers repaired and fully functional!!!
Total cost $12 - that works out at $4 per unit to repair.
Well worth considering.
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05-03-2021, 08:41 PM
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Registered User
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Join Date: Feb 2015
Location: Lynbrook, Australia
Posts: 616
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Hi Merlin
An idea to consider, give them spray with silicone lubricant. Might lube the contacts and at least limit corrosion.
Philip
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05-03-2021, 09:25 PM
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Registered User
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Join Date: Oct 2005
Location: Junortoun Vic
Posts: 8,904
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Philip,
I don't think the failure were corrosion.
They just basically stopped!
Replacing the switches is the way to go..worked 100%
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06-03-2021, 06:45 PM
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Registered User
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Join Date: Feb 2015
Location: Lynbrook, Australia
Posts: 616
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Hi
At least they sound easy to replace.
Good luck with the new ones.
Philip
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06-03-2021, 09:12 PM
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Registered User
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Join Date: Oct 2005
Location: Junortoun Vic
Posts: 8,904
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Philip,
So far so good.
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