These systems are rare enough that it's probably worth fixing instead of treating the board as a simple FRU. There are schematics on bitsavers for that board, and they are complete.
On Tue, Jul 3, 2018 at 1:21 PM, Monty McGraw via cctalk < [email protected]> wrote: > I've been repairing my Tektronix 4052. > > I've got the digital logic working - but the text and graphics are messed > up. > > 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? > > Thanks, > Monty > -- Ian Finder (206) 395-MIPS [email protected]
