Help I have a new plane a Tower trainer 40 ultimate combo, well anyway when I turn on the power one of the servos make a strange sound like its constantly moving but just a little bit. However when I adjust the trim on the radio it stops. Can someone tell me what is going on? Oh yeah the plane has never left the ground!

Check the friction in the controls. If it is a bit stiff the servo may be driving against it a little.

Good advice. But if it goes away with a wiggle of the stick, or a click or two of trim, it's not serious. Quite a few of my planes have had a bit of servo buzz now and then and it's never been a problem. (As long as it's minor and stops when the stick is moved!)

I would check the battery voltage before each flight to be safe, but you should do that anyway.
Dennis-

Thanks guys I will have to check it out

Could be from a couple of causes. Servo being turned to it's limit or friction in the controls such as the push rods if they are in a tube. If it goes away with trim it's probably going to the end of the servo travel. You can adjust that out of it.