I brought my guitar to the tech for a fret refreshing and string change.

Somehow, my guitar buzzes now. The noise reduces when I touch the volume know or metal pieces, excepted for the coils.

Is that a fret buzz? What can I do? by the way I have a floyd rose

thx

explain the buzz and where its coming from, aslo does it still buzz unplugged?

could be a lot of things, might needa resolider some connections and shield the pick guard.

Yeah It still buzzes unplugged. I guess the strings are too low
How can I solve this?

You need to fix the action and/or adjust the truss rod. Post a picture of your bridge and neck facing downward from the head stock to the body and I will give a detailed explanation on how to fix this.