This is the first time I've tried to link a video,so here it
goes:
There
is some flashing dots in the trace,I'm begining to think it may be more
trouble than it's worth to fix it,I have been spending more time with it and
there seems to be a crt drive problem,If I turn the intensity control,the
image grows and shrinks,the horizontal parts of the trace trail off streching
the line,so a fake square wave (obtained with the chopped setting) looks like
a trapozoid,when I press the store buttons the screen gets bright as it is
supposed to,but just after you go back to normal mode the screen is perfect
for a shory time with no artifacts present.then they start to appear.
The
trace is also kind of soft focus,even at best settings.
I really have to
start measuring voltages if I am to dig into it,But nothing I have currently
can measore over 1000v
I have never had another storage scope,Are their
traces supposed to be as sharp as the "normal" scopes?
I have other scopes
that have less features/bandwidth,that work properly 453,2213,422.So I may
just put away,untill I have more time to spend on it
--- In TekScopes@..., "Al"
wrote:
>
> Hi Scott:
> From your
description it could be loose stuff inside the CRT. Sometimes flakes of the
cathode coating get dislodged in shipping and get caught up in the electron
gun and generate some of their own electrons which end up on the screen. If
the scope is functional and you can live with it, leave it alone, I would.
Attempting to dislodge the stuff by shaking, tapping, etc might just make it
worse.
> Good luck and welcome to the group, Al d.
>
------------------------------------------------------
> --- In TekScopes@...,
"emilypetersen1991" wrote:
> >
> > I
have been searching posts,and with google and I can't seem tofind the
answer,My 465 scope seems to be working properly except for some
sparkles,artifactsn,and reflections on the screen,intensity and focus seem to
work at it should.It appears to throw confetti on the screen.
> > I
was wondering where would be a good place to look?is it an amplifier
problem,or a crt voltage problem?
> > Thanks,
> >
Scott
> >
>
