Backprobing electronic connectors provide a useful means of diagnosing a probable open or short circuit in any situation. However backprobing must be done carefully so as not to cause a short circuit in itself hence creating more problems. This means a very sharp, long and thin probe is ideal in this situation. A good idea is to remove the inner body of an insulation piercing clip (photo) and connect the end via a banana clip to the DMM (digital multimeter).
