How to mend Samsung Dnledv3

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

eiki projector?

sony wega lcd projector tv kf-42sx300u?

What would cause bulbs not to work?

barco graphics?

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Multimedia Projector?

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Qualcast performance power mower?

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lost power?

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replacement bulbs in plc-sw20 projector are not working?

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

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help in finding used projector lamps for cheap?

is about a overhead projector?

my over head light bulb burn out?

Infocus 777 comes on wont project light?

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reset lamp hours?

how can I fix my projector?

is it worth fixing or buying a new tele?

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Explain fixing damaged or broken tapes?

projector has green spots?

Projector bulbs?