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Tonight I hauled a Mitsubishi Diamond Pro TX21 out of a skip & back to my room, waited for the condensation to evaporate, then plugged it in. Everything seems to work fine except that it produces bright 'bands' or 'lines' where there is a high contrast boundary, such as a white/grey window against a blue background as in the photo beneath. Does anybody know what causes this & whether it is easily fixable?
