[Posibly OT?] Tek 321A scope needs help....

From: Tony Duell <ard_at_p850ug1.demon.co.uk>
Date: Sat Sep 18 23:40:21 2004

>
> Hello all,
>
> I recently became the new owner of a Tek 321A scope, but it needs some
> repairs. Also, I have no manuals, so if anyone could loan me an operator's
> manual or service manual so I could make a copy, I'd appreciate it....
>
> The main issue is the display. There is what I can only describe as a
> "cloud" that runs vertically along the center of the display. Varying the
> intensity and focus does vary this cloud, but it is still present. Also,
> the trace line is visible, but very out of focus. Wider at the edges, and
> narrower in the middle. I can take a picture if this makes no sense...

Well, it _could_ be the CRT (displaced electrodes or interelectrode
shorts) :-(, but I'd start by checking CRT electrode voltages. On some
Teks there are various geometery/sheild electrodes, and it may be that
you've lost the voltage on one of them.

-tony
Received on Sat Sep 18 2004 - 23:40:21 BST