- Turn the meter off.
- Remove the battery door.
- Remove the batteries.
- Open the child-resistant battery door by inserting a narrow object, such as a pen, into the slot. Push the tab in the direction of the arrow and lift the battery door up.
- Examine the battery compartment. Each battery should be held in place by the black tab on the side of the battery compartment.
- Confirm that the black tabs on the side are not bent down.
- If a bent black tab is preventing the battery from making contact, use tweezers or a small screwdriver to gently bend the tab(s) back into position.
- Reinstall the batteries. The batteries must be placed in the battery compartment, under the black tabs with the “+” side facing up (visible).
- Snap the door closed.
- Attempt to turn on the meter by pressing and releasing the power button.
