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Re: HP 182T display/8559A SA - display only visible with beam find.


 

FWIW, I've repaired a good number of 182C and 182T in a distant past
and often there was a carbon composition resistor (100 ohms) going
open in the cathode drive circuit.
Frank

On Thu, Feb 17, 2022 at 3:07 PM paulswed <paulswedb@...> wrote:

Well at least the problem is big and bold.
When just beam fid works it will be any of the following.
Blanking Z is cutoff for some reason.
X or Y or both are totally unbalanced. Typically some sort of supply failure if you find the delection all the way to one side.
But if just x or y then most likely a transistor in that deflection circuit.
Generally reasonable to find.
Good luck
Paul
WB8TSL

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