HP 141T, 8552B, 8553B?

I just got this setup and the it seems to work OK except the that the DISPLAY UNCAL lamp on the 8553B doesn't light when it should. Is this a common failure that is an easy fix, any tips appreicated. tnx hank wd5jfr

Reply to
Henry Kolesnik
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The bulb shows no continuity and my sorrily xeroxed manual is missing page

Reply to
Henry Kolesnik

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