My experiance with these things is ,take it to an expert, if the bulb blows and it dosn't work when you have replaced it this as other members have said,it might have not been the problem to start with,fuses and bulbs usualy blow when there has been a surge of power,These bulbs can be expencive so i suggest seek expert advice,My mate had one of these and belive it or not,we found at the local tip/recycle depot that people were just disposing of there older tvs/Projection tv's,slipped the guy a couple of pounds and he let us take what we wanted,another way is o on some of these FREE CYCLE sites there are allways people getting rid of stuff who are glad of someone getting the use of there unwanted items that can be put to good use,Good Luck