First, make sure you have an object that needs to be repaired. You’ll know this is the case when it’s smoking, missing components or explodes into several tiny pieces.
Once this happens, head over to the phone on your desk. It’ll be on the right side of the desk next to the computer and in front of the window.
Move the target reticle over the phone until a hand icon appears. Once it does, press the left mouse button to pick the phone up.
With the phone in hand, head over to the broken object. The target reticle should turn into a wrench once it’s over the broken object, and if you press the left mouse button while the wrench icon is active, a menu of repair services should pop up.