1991 HP 54600A missing text and display elements
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I am attempting to repair a broken HP 54600A.
When I first powered it on the display was all solid green and squashed vertically, 3 of the tantalum caps on the motherboard also let out their magic smoke.
I have replaced the caps and the two responsible for the vertical deflection of the CRT.
It now displays both waveforms correctly but the display is missing all of the text and many other UI elements making the menus unusable.
Any help diagnosing this would be appreciated
Thanks,
Callum
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