Build a shutter tester for Focal Plane shutters - Cheap, Easy & it Works

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There are clearly no problems with lighting. I have both the seals and the frame installed. I'll see what the problem is. Thanks

 

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There are clearly no problems with lighting. I have both the seals and the frame installed. I'll see what the problem is. Thanks

 

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Solved the problem. One of the screws clamped the wires and broke the insulation on the M sensor