I put the shielding back on...
It is easy to take off... Two screws, then slide the bottom piece towards the front back of the meter gently about 3-4mm. It has a couple of tabs that hold the two pieces together. At first I was worried it was being held on my thermal paste, but there is nothing contacting the shield.
Did you buy this meter broken, and thus have no clue what caused the problem, or did you break it on your end, and if so, how?