[R-390] Off switch Doesn't

[Jim Brannigan]

Thanks for all the input on the switch.  Does anyone have a part number?
Are the micro switches available from Mouser or other sources?

Tnx
Jim


>>>>I understand the AC micro switch is a common failure point.
>>>>The micro switch in my 67 EAC is welded in the ON position.
>>>>Is there a replacement/fix for this problem?
>>>
>>>Sometimes you can "work" the switch actuator a bit with a small 
>>>instrument and sometimes it will free itself.  I fixed one that way one 
>>>time.
>>
>> This is never a permanent fix, and rarely anything but a very short-term 
>> one.  If the switch has welded itself once, it will do so again.  Even 
>> taking the switch apart and dressing the contacts is only a short-term 
>> fix.
>>
>> Microswitches are cheap -- buy a new one and install it.  Get the highest 
>> contact current rating you can in the correct form factor.  While you're 
>> at it, buy two, so you'll have one for next time.  Put a proper snubber 
>> across the new switch to maximize its life.
>>
>> Best regards,
>>
>> Don
>
> I think in my case, it was just excess grease that had gotten down around 
> the plunger and was keeping it from popping fully back up.  Working it a 
> few times freed it up and it worked fine for years.  Yeah, welded, 
> corroded contacts, etc., are a different problem.
>
> Regards,
>
> Barry