Looking for Tektronix 4051 or 4052 Display Board
pete at petelancashire.com
Tue Jul 3 16:01:12 CDT 2018
Is 206 Washington ? I have the remains of a 4051 4052 and 4010 terminal
sitting outside in the scrap pile. Parts have gone to Europe but they're
still pieces left over
They were about 25 miles west of Portland Oregon.
On Tue, Jul 3, 2018, 1:35 PM Ian Finder via cctalk <cctalk at classiccmp.org>
> 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 <
> cctalk at classiccmp.org> 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
> > on vcfed.
> > With a scope on the final X amplifier stage - it is oscillating - so I
> > weird horizontal strokes instead of dots for text. I know from the
> > manual that this circuit includes a feedback loop, and with the scope I
> > 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
> ian.finder at gmail.com
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