Toshiba 62HMX84 62" Rear Projection HDTV "mean yellow engine light goes" Questions

...yellow wire on the back of the light engine Swapped out new light engine and replaced all cables.Turned on the TV and received blinking lights (Slid Green and blinking red - then the green goes out ...

yellow.I checked and cleaned filter also pulled,checked connections and reinstalled lamp. According to the manual this means the Lamp cover door is open or lamp cartridge is not secure. See Appendix F

...yellow light and then eventually days later went to red. We purchased a new lamp and put it in. Still does not work. Purchased another new lamp and put it in thinking possibly the first bulb we ...