replying to Peabody, rocketsocketman wrote:
waybackKILLSPAM44 wrote:t


I have a 1972-vintage Sears garage door opener, model 139.654000
which still works great. But the only remote I have left is
falling apart, and is no longer dependable, particularly in very hot
or very cold weather.
The transmitter/receiver system is the old analog type - no digital
codes at all, just the specification of "carrier frequency" and
"modulation frequency", and the receiver is powered by 24VAC
provided from the main chassis. In fact, it appears that the
receiver actuates the opener mechanism by at least partially
shorting out its own power supply temporarily.
I have been unable to find any direct replacements for either the
transmitter or the receiver. In fact, I don't really see any total
replacements for the transmitter/receiver system that would operate
using the 24VAC power supply.
Does anybody have any suggestions for what to do? I'd like to avoid
having to replace the entire opener.



using the Delta 3 receiver wired with an external 24 volt power supply
should fix the problem. your old sears operator has 2 terminals that when
shorted actuate operator. connect terminal 1 on the Delta receiver to the
ground terminal on operator and terminal 2 on the receiver to
the 2nd terminal on the operator. connect the external 24 volt power
supply conductors to terminal 2 and 3 respectively on the Delta. set
receiver and transmitter switches to match. check operation.



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