Hi folks, recently I have purchased my new Hitec servos from Tower. One HS-5945mg coreless and two HS5625mg high speed. My point is when I plug them in they squeak like hell. I mean like high pitch noise. I never heard any servo squeak like that. Is this normal? I tried running them on 4.8V as well as 6V battery packs but they produce identical sound. Or is that because I'm running it on PPM rather than PCM receiver??
Otherwise they move smooth and fast.