Table is getting "stuck" periodically

I have a variation of this problem -- but appears to be stuck in a cycle that repeats endlessly every 2 min.  Brand new table, just unboxed, happens upon startup.

I sent in a service request, but wanted to also post here in case anyone else has seen this and has a fix / suggestions.  I've been through the support posts on table clicking -- arm and slide seem fine and are moving smoothly.  More info below if you'd like to read on...

I’m getting a similar thing with the “braaaap” noise and I’ve had my table for a while. Has there been an update recently? 

Ah, found a solution. Found another post re a table stuck in Homing and saw the reference to the rho and theta sensors. Sure enough, the slide was blowing right past the rho sensor while homing. 

Unplugged and plugged it back in, and all is well now. The table is off and running with its first track. Woo hoo!

Though it can be tough to exactly identify the cause of noises or other issues remotely, the descriptions and the video definitely point to a problem with Rho homing - which works using a stationary Hall effect sensor positioned to sense a small magnet in the Rho carriage (sliding part where the mag-arms are attached). If it fails to sense the target magnet, the Rho axis runs into its end, and the motor "stalls" (which causes the "mini jack-hammer" sound).  After it "thinks" it has moved the entire length of the Rho arm, it then backs out and tries again - which usually works when the problem is not serious. This does not harm the motor or mechanism, but obviously is undesirable. We test every Sisbot thoroughly prior to shipping, but on rare occasion, things can shift during transit (the sensor's connector to the SisBotBoard can get loose, or the sensor itself). If our support team cannot help you fix it, the solution is to send out a replacement Sisbot to swap in.