Looking for Tektronix 4051 or 4052 Display Board

Monty McGraw mmcgraw74 at gmail.com
Tue Jul 3 15:21:35 CDT 2018

I've been repairing my Tektronix 4052.

I've got the digital logic working - but the text and graphics are messed

I posted photos of the screens in my Tektronix 4052 troubleshooting thread
on vcfed.

With a scope on the final X amplifier stage - it is oscillating - so I see
weird horizontal strokes instead of dots for text.  I know from the service
manual that this circuit includes a feedback loop, and with the scope I see
oscillation all around the loop - so I haven't found the source.

Does anyone have a spare Tektronix 4052 (or 4051) Display Board that I
could buy?


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