I have a Samsung HLR5667W which I replaced the lamp about 1.5 years ago. Just recently I got the lamp out lights and no picture. So I got another lamp, althought the lamp I took out did not look bad. The new lamp did not fix the problem. When I turn on system, it clicks, I get a loud humming noise, sometimes high pitched squeels, then it sound like it tries to recycle several times. finally, it shuts down with the lights flashing the bad lamp code. I took the lamp out and held the blue switch, and I get the same thing. I can see the two fans spinning, but there appears to be a vibration. Any help is appreciated.