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Liftmaster CSL24VDC issue

I have this gate opener that has been working fine until I tried to program two new keypads. I was unsuccessful in programing the keypads, and I ended up clearing out all my remotes, but that is not a big deal; I can re-do that. however, not sure what happened but the gate was no longer opening or closing using the test buttons. the power is on; lights are on, but can't get it to open or close. so I decided to clear the limits and just start over, so that is where im totally stuck. I have the set open and set close light blinking but when I press the move gate buttons up or down, nothing happens. I have power cycled the entire unit, but still the same results. there is a blinking "timer" light on the circuit board. I called liftmaster support and they said the timer light should not be blinking and there is either an issue with the board or motor but would not help me any further since Im not an authorized dealer. can anyone shed some light on what I can do to get this back working? I have attached a pic if that helps. a huge thanks in advance for any help I can get. quick ***update to my original post: the flashing timer light, I figured out, would go off when I turned the "timer to close" knob to "off". but even with that light off, I'm still unable to get past the blinking "set open" "set close" close lights..nothing happens when I press the "move gate" buttons up or down. two more notes...on the upper right side of the circuit board, the "stop" light is on steady. when this opener was installed, although it has its own built in remote receiver, I had another remote receiver I wanted to hook up to this so I could use the old wireless keypad. I had someone connect it, but it never worked that well, it would only sporadically open the gate, so I decided to disconnect it. don't know if this has anything to do with my current issue but wanted to throw that out there.
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