A friend lent me a Hitec HPP-21+ so I could program a couple of servos - I was able to use it successfully to program the elevator servos on my SBach.

After I replaced the aileron servos a couple of weeks ago I decided to test the Hitec HS-5625s that came out (let's call them #1 and #2). Here's where things started getting strange.
[*]I tested both servos; #1 was fine in digital mode but #2 gave the message "SERVO Not Connected or Analog SERVO Connected. Check SERVO or Click Refresh Button, Please. I shrugged, labeled them both and put them away.[*]Last night I connected #1 and, intending to use it as the throttle servo for the DLE 20 in the Pulse 125, programmed the end points for a 120 degree sweep - no problem. I unplugged it.[*]I plugged #1 in again to check it for something, and I got the "No servo or analog servo" message and the servo would not respond to the manual or automatic sweep tests. I plugged it into a receiver to test it and it worked, but the programmed 120º sweep and the endpoints I set were gone.[*]I tried #2 and it still showed "Servo not connected or analog", and it would not respond to the tests either.[*]I charged the battery (I'm powering the servos with a 5-cell 6.0V NiMH w/ 2000 mAh) but a test this morning revealed that nothing had changed.[*]

I checked the manual and Google for possible solutions but didn't get very far. Has any of this ever happened to you?