Extensive electrical troubleshooting to determine why approx 30 fixtures not working. Dug up several wire connections, and used wire locator to locate buried wire. Re-spliced at least 3 connections at the front left driveway corner, left side, and inside transformer. Inspected lights (see estimate) and replaced 3 bad uplight bulbs. Also reassembled at least 3 uplights and 1 path light that were apart. installed 1 missing uplight bulb, left of driveway. Front foundation bed: Replaced 2 uplight bulbs which were missing. Re-tested and found voltage below 8v for all fixtures tested, which is likely causing dimmer bulbs. Will need further troubleshooting to determine where the problem is and if new wire needs to be installed. Cannot add any new fixtures until voltage can be increased. Will re-evaluate after next service.