How to mend Projector Replacement Lamp

I show a dark spot when I have a blue screen?

Multimedia Projector?

barco graphics?

is about a overhead projector?

What would cause bulbs not to work?

help in finding used projector lamps for cheap?

projector has green spots?

lost power?

Panasonic password reset?

Projector Panasonic PT-AX100 power supply fix?

eiki projector?

how can i fix temperature erro on my projector NEC LT150Z??

Infocus 2102 projects green color?

sony wega lcd projector tv kf-42sx300u?

replacement bulbs in plc-sw20 projector are not working?

How can i fix my Hitachi CP-SR55 Projector?

how can I fix my projector?

reset lamp hours?

Explain fixing damaged or broken tapes?

my over head light bulb burn out?

Hitachi cp-x430 projector picture is dim/faded?

Projector bulbs?

error in auto iris appear on my epson EX30 projector screen?

How do I fix my SONY color reaqr video projector, KP-53S70?

Qualcast performance power mower?

Dell MD115HD projector?

is it worth fixing or buying a new tele?

i replaced the bulb followed step by step and still nothing happens any?

philips 60 inch projector tv?

Infocus 777 comes on wont project light?