I just got a neat InFocus IN76 at a Goodwill thrift store for under $30 USD and the bulb that was in it had over 5000 hours on it but still was pretty good. I wanted to get a new bulb so it would be brighter, so I got a bulb and housing online and when I installed it, it is extremely dim. Much worse than the 5000 hour bulb. Is there a reason for this, does the bulb just need to be put on for a while to get to full brightness? I have never replaced a bulb before so I am not sure exactly what is wrong. Thanks for your help!!