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Video projector light guide

Discussion in 'Electronic Repair' started by N_Cook, Nov 1, 2008.

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  1. N_Cook

    N_Cook Guest

    30mm long 4 x 3.7mm internal bore light tunnel that is made of 4 pieces of
    surface silvered 1mm glass slips. Goes between the high power lamp and the
    first lens of the optics proper.
    The silvering is half "burnt" ? off one and 1/4 burnt off the other 3. Any
    reason why not to replace with some polished stainless steel 0.5mm sheet,
    formed around square bar and packing, into a rectangular tunnel?
    There is a 3 inch fan cooling the bulb and a 2 inch fan cooling this tunnel,
    and upwind of both fans, also cooling the main ps.
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