How do i fix servo that keeps vibrating or do i need to buy a new one
 

I have a radient standard 5kg analog servo an it keeps twitching and vibrating can i fix this or do i need a new servo. I barely ever used this servo.

It can be anything from a bad servo, bad BEC to a bad transmitter.
The servo is a cheap RTR thing, for sure low quality. Maybe it is wise to go to a local hobby shop to try a different servo and let you advise one new if another servo is running OK.

Does it vibrate with the car sat flat on the ground? Or only when you pick it up?

What radio are you using with this servo? Are you sure it is compatible?

Rc that is a low cost servo. you might want to invest in a little more costly servo..maybe 8L in cost

You might need a novak glitch buster on your receiver or reroute your wires to stop the glitch....Consult your experienced rc racer friends or local hobby shop techs for advice before spending a dime...

You tell the OP b4 spending a dime lol.. do you know what a glitch buster will cost this guy in the UK about 15L... thats a cheap servo upgrade it

it does it when I pick it up and when it is with the car sat flat on the ground

thankyou I will

Thankyou for your comments and replies. I will be getting a better servo thankyou!:)

A $0.50 cap, and a old servo lead? I believe I have that in scrap hanging around my hobby bench.