It looks like an SG-2100 or similar. I think I can just see the small hole beside one of those rubber grommets. One grommet hides the manual west-east button. The other one that has the small hole is where you insert a paper clip. With the cable from your receiver connected and the receiver on (power applied to the motor), press the hidden button with the paper clip to reset the motor. Do it a couple of times. You will see the light on the motor flash yellow and then revert back to green. Doing this has brought my motor back to life in the past.