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HP 8591E video/display issue

Question asked by Vorterix on Dec 12, 2018

Hi everybody.


When you turn on the analyzer, it accepts any parameter of amplitude, span or frequency that are quickly entered. However, at 3 or 4 seconds after switching on...the entire grass line "goes up" and jump to the top of display. It endeed compressed as a single line you still can see, so as you don´t have a normal display image it is not possible to run any diagnostic routine.


Not an expert with the rig, I was reading the service guide at assembly level repair to arrive at an indicative conclusion. There is some examples of common troubleshooting video problems, but not this case. I can see the video is processed at A16 module, but not sure if A2 display module is involved too.


Any guideline or comments will be appreciated.