We have one of those motion-operated security lamps at the front of the house. It has been there for several years, and now the bulb is gone. All screws are thoroughly rusted and will not budge, so can't open to insert a new bulb and can't remove it from the wall. Only solution is to replace. How do I get the rusted screws to move?
It's one of these:
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It's one of these:
[broken link removed]