Replacing faulty Logic Board

Hi we recently moved, and the garage door is giving us issues.
Swapped out the old cfl bulbs that the previous owners used, test the remotes still works sporadically. There is no issues operating the barrage door with the manual hard wired opener. Anyways, I think I have narrowed it down to faulty logic board but I can’t seem to find any that is compatible with mine
It’s a lift master professional line 1/2 HP security +
Model 2000SDR
The serial number 39171A00XXX
It has the orange/red dot for the learn button.
Can anyone chime which logic board is compatible?
Any help would be appreciated.

Liftmaster Opener is a modern technique that helps to open the door after detecting the person. If it is not working, we can call experts who will come and repair that. 

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Finding a replacement logic board for your LiftMaster Professional Line 1/2 HP Security+ Model 2000SDR might be challenging because it's an older model. However, search online retailers specializing in garage door opener parts. You can also contact Liftmaster support directly.