Remove the top cover to access the internal components of the RD-810.
Remove the motherboard to replace it or the LED bulb, or get better access...
Remove the Power Supply Circuit to access the power supply switch.
Replace a faulty Power Supply Switch.
Imager replacement in the RD-810 Projector.
Remove the lens to replace it.
Replace the speaker.
Replace the Magnifier.
Replace the cooling fan on the RD-810.