On 9/24/2016 10:36 PM, Fred McKenzie wrote:
In article .com,
Patricia Quiggins m
wrote:

replying to Art Todesco, Patricia Quiggins wrote:
Just exactly where is the transmitter in the opener? We've been trying to
find dip switches. Where do you buy a transmitter?

I consider the remote control to be a "transmitter". Some openers may
not have a remote control, but are opened by a wired keypad.

Look for the Sears model number. It consists of two or three digits, a
decimal point, and several more digits. The first group of digits
indicates its actual manufacturer. You can find a cross-reference if
you search the web.

Take the Sears model number to the Sears Parts Direct website
http://www.searspartsdirect.com/. With any luck, there will be a
parts list that includes the keypad or dip switches you need.

If yours is not a Sears opener, that website may still have parts for it.

Fred

I'm the OP and did that some 10 or 12 years ago and I sold the house.
We had a lightning hit close by and it took out the radio receiver on
the garage door. I ended up replacing the radio and the 2 transmitters
with a digital code unit from Granger, I think. That lightning hit also
took out the computer mobo, scanner, cable modem, 1 X10 module but
didn't touch things like the wired garage door keypad or TV/stereo.