I have 2 Infocus SP 4805. One is my original with a bad pixel, the second I bought as a replacement without a bulb. after putting my bulb into the second one, it lights, stays on for 10 sec and then spools down with a red blinging LED (3x). After some fidling I put the bulb back into my original projector and the same thing happens but without the Red LED. The bulb goes out after 10 sec but the projector keeps running. Could the bulb be bad but still light up temporarily? I don't know if its my projectors or the bulb?