Hello Locate the three hex screws around the head of the bulb that, in a triangle formation, secure the bulb to the assembly. Remove the screws with a hex screwdriver. Pull the bulb and rear lamp cover upward to remove them. Reinstall the rear lamp cover onto the lamp assembly and line up the tabs with the holes along the side of the assembly. Press downward until the cover snaps into place.
To replace bulb in RCA rear projection TVs follow this.
Turn the lamp assembly so that the front of the bulb faces downward
Locate two clips approximately three inches apart along the back edge of the rear lamp cover. Depress the clips with your thumbs and pull upward on the rear lamp cover to disengage it. Move the rear lamp cover so that you can see the head of the bulb. Note that the rear lamp cover still connects to the base of the bulb by a cable.
Remove the nut that connects the cable from the rear lamp cover to the base of the bulb with a wrench. Disconnect the cable from the old bulb and discard the old bulb.
Reattach the cable from the rear lamp cover to the base of a new bulb and install the nut. Tighten the nut with a wrench
Install the bulb face down into the lamp assembly. Install the three hex screws into the tabs along the edge of the bulb and tighten with a hex screwdriver.
Reinstall the lamp assembly into the back of the television, facing the bulb towards the center of the TV set. Tighten the screws securing the assembly and reinstall the lamp access door. Tighten the screw on the lamp access door.
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