Originally Posted by
LabRat
As mentioned, the upper leak is usually due to deterioration of the gasket between the carrier and head... It can be worse if the head lift is misaligned, so check rasing/lowering head to see if it lowers evenly on the carrier every time...
The lower carrier to stage is supposed to mostly seal well, but some slivers of light are not uncommon... But if there are blobs of light there, it can be caused by an alignment job where someone tried to align stage without loosening ALL the screws at once, just one or two and pulling on stage causing a warp... If it happened, stage needs to be removed from enlarger, placed on a flat (like MDF panel), sandwiched with another flat, and tapped with a mallet to flatten... Sometimes if removed and flexed a little, metal has a memory that flatness returns to...
Take a straight ruler to the stage and lay across at all directions and look for a gap with a small flashlight behind it...
Some slivers of light that project to the wall are somewhat normal, but any projection near the easel area can be troublesome!!!
Steve K
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