[Merlin66 (Ken)]

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????