Dell 1100MP is a compact DLP home‑theater projector that delivers 1,400 lumens at SVGA resolution (800×600). Common failure points in this class include lamp burnout, fan or motor overheating, and DLP chip degradation; power supply modules may also fail under prolonged use. Begin diagnostics by verifying the AC adapter output voltage and inspecting for blown fuses, then visually inspect the lamp socket and replace the lamp if it shows signs of burn‑out or discoloration. Check the internal cooling fan operation and clean any dust accumulation on vents to ensure proper airflow. Finally, review the projector’s error code display (if available) and confirm that all optical components are correctly seated before proceeding with deeper repairs.[oss-gpt-20b]