Did you not see the date of this thread? It's over nine years old. Additionally, the OP hasn't logged in since May 2007.Dear Reneauew, so the face place, the piece that is trimmed above the mounting hole just turns, clockwise or counter clockwise to remove, my bulb did not work, the motor spins and the transducer makes noise, I tapped on the unit itself and the bulb now works. Loose soldering joint???? Please advise on face plate removal???