i have a rear projection Mitsubishi dlp tv problem lamp? power supply? please someone help?

Hi i have a dlp mitsubishi wd73727 73inch. When i bought it the bulb was visibly blown. it uses a 150 watt osram bulb. i tried ti plug in a 120 watt bulb from a 63 inch mitsubishi that wad similar and had the same connectors but doesn't fit in the lamp housing. tv powers up i hear all the fans and color wheel spinning and it clicks 3 or 4 times and then the lamp comes on for a second and shuts off. after that i get a solid red led light on the front and the error code is 34 ( lamp abnormalities ) do you think its just the bulb. do i need the correct bulb? I checked all the capasitors and the weren't swollen or busted and the fuses i found were ok. please help me