: After reassembling, you may need to initialize the unit by holding specific buttons (e.g., "Movie" and "Music") during power-on. Diagnosis Tips The Marantz AV7705 HDMI Repair Guide
: Carefully disconnect power supply wires, USB cables, and fragile ribbon connectors. You may also need to disconnect Wi-Fi and Bluetooth antennas. marantz hdmi board replacement
: Remove the numerous screws (sometimes up to 70) securing the HDMI ports to the rear panel. Use a prying tool or cardboard separator to gently lift the board from its "card-style" slots. : After reassembling, you may need to initialize
: Ensure the unit is unplugged. Document or label all internal cable positions to prevent incorrect reassembly. : After reassembling