开云体育

My 455M had a failed HV multiplier. It was blowing the fuse same as your 465M. It has a 1.5 times multiplier as part of U550 this is confirmed
in the Tektronix Yellow covered X Ref catalog. I built a separate multiplier section to replace only the failed part of the module. Wired this to the Transformer output previously used by U550. The rest of the U550 module Circuitry remained in place and working as before the failure. I 3D printed a small enclosure for the multiplier, assembled the components, tested, verified performance, potted and then mounted it as shown in the photos here:

/g/TekScopes/album?id=253227

Unit now works as originally designed.

Good luck with your repair.


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Michael Lynch
Dardanelle, AR