I have an old Sears garage door opener, and there is a small remote lock
switch mounted outside the door in the door frame. When you turn the key,
two wires leading from the switch to the opener are shorted together, and the
door opens, or closes.
The key still turns fine in the lock, but no short is created. I've removed
insulation from the wires just inside the garage, as close to the switch as I
can get, and creating a short there opens the door. So the problem appears
to be inside the switch.
I just want to know if there's anything I need to look out for when
repairing or replacing the switch. It appears to be mounted so that if I
were a bad guy trying to remove the switch and shorting the wires, pulling
the switch out would leave the wires behind. But it still seems vulnerable,
and I wonder if I can improve things.
Anyway, any "look outs" for me?
Hmm...This particular design looks like it's responsible for letting
the garage door opener know that the door is down. IE: stop position
As, it's too small to be the safety reverse; I don't see how you'd
break it if you happened to get in the doors way.
What was it's function in the garage door opener?
MID: <nb7u27$crn$ firstname.lastname@example.org>
Hmmm. I most certainly don't understand how I can access a copy of a
I assumed it was a gate in which an obstruction tab gets in the slot,
like a travel limit sensor. VCRs eject mechanisms have similar shaped
sensors. Without seeing where it is located, it is hard to guess.
Someone else's post has reminded me that the supply and take-up reels
on the deck also has these to detect reel RPMs. When you rewind using
the deck instead of a cheap rewinder it "knows" to slow down near the
beginning so as to not slam stop and possibly break the tape.
There are many applications for these.
On Sunday, September 4, 2016 at 11:43:38 PM UTC-4, bob_villa wrote:
Too lazy to use google again, I see. A short circuit doesn't mean
there is an overload. It just means there is some direct, typically
unintended connection or fault in a circuit. You could have a short
on the wiring going to a low voltage, low current sensor, where it
will not work, but there is no overload, for example. It's also
common to say that to reset this device, you short pins 1 and 3
together while applying power, etc.
Why do you need it? Don't you have a remote for each car?
After my father died, my mother had an extra remote. She has it in the
breakfast area and can now close the garage from the floor above.
Don. www.donwiss.com (e-mail link at home page bottom).
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