Make sure the cardboard/fiber shield is on the crt. From the pics, it looks
like the crt is not as far in as it should be [if memory serves me]. I always
use distilled water on these mirrors to avoid water marks after drying.
I have restored several of these Norelco units and have NOS 3np4s and a resilvered concave mirror........
Currently have a Scott and an Emerson with the Norelco system.
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