SW focuser handcontrol -FAIL!

[Merlin66]

I use the SW focus motor on all my scopes as well as the tuning of my H alpha etalons eight in total.:eyepop:
While getting things ready this morning, I find not one but two of the handcontrollers wont work!!
Checked and replaced batteries - still not working...
There's not much inside - two push buttons, two resistors, Transistor, Capacitor and variable resistor.
I'm not an electronics type guy......
Has anyone experienced similar failures? If so any ideas of possible cause.
Any assistance gratefully received.:help:

[Martin_S]

Ken , I found this on stargazers lounge, I think somebody has drawn up a schematic from a SW control box. The transistor you mentioned may be a LM 317 voltage regulator. If you have a multimeter check the continuity from the battery snap terminals ,the wires are very flimsy and break easily inside the insulation.

Martin

[Merlin66]

Martin,
Appreciate that!!
I'll try to get the multimeter on the terminals of the voltage regulator see if that's the issue.
Any other ideas????