I just got a used digital servo and it is making a high pitched squeaky sound. its is not glitching though.....
just wondering if this is normal for a KO propo digital servo?!?!!
It normal. Digital servos are constantly checking and adjusting the output positon. Note that digital servos certainly use more current than analog servos and that they will cost you 5-10 sec of run time if you run Mod sedan or 1/12th scale.