Hi Richard,
I have a selection of 57X curve tracers including this model
of 577, and I would guess there is nothing wrong with that CRT.
My experience has been that curve tracers do not get used
much, so it is just the usual bad capacitors and other old age problems along
with?whatever abuse they have suffered while sitting around for 20 to 40
years, that they arrive with.
Craig's point about the actual danger in this 577 purchase
being the shipping damage, is?quite real.
Some of the larger knobs on the front of the 577 are not used
on any other model, but this one looks very good in that respect (if I'm looking
at the?same 577 on eBay).
tom jobe...
?
?
?
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----- Original Message -----
Sent: Tuesday, March 12, 2013 10:48
AM
Subject: RE: [TekScopes] Is this
Tektronix 577 CRT kaput?
?
It is the
split screen storage version of the 577.? First thing is that he has set
it up wrong, so all you are seeing is the flooded screen.? Second thing
is that he has selected a high voltage (1000V), so the yellow light comes on
and it inhibits scan. You can see the words to that effect underneath the
light. There are ways of fooling this interlock so you can test without the
always missing safety box.
Now the
illumination of the screen is not even, which is a little odd.? I¡¯ve just
set mine up the same way, and my screen is fairly evenly flooded with no
structure (other than the odd screen burn at the centre and bottom
right).
I¡¯d say there
was more risk of damage on its way from the States (which is where the seller
is).? He¡¯s going to have to pack it exceptionally well for it to be
anything better than scrap when it gets to the UK.
Craig
From:
TekScopes@... [mailto:TekScopes@...] On Behalf Of
ehrico
Sent: 12 March 2013 17:13
To:
TekScopes@...
Subject: [TekScopes] Is this Tektronix 577
CRT kaput?
Hello everyone,
a seller on ebay is selling a
tek 577 with a fault, he/she? is not fully 100% sure it is the crt. I
can't afford a working one but am willing to restore one that is
restorable(with undead crt)
So I have provided to 2 links to pics in my imgur account. The
second one they must have turned the intensity and or brightness full
up?
? and
Is it a CRT problem or
a problem with deflection circuitry etc...?
Anyway my name is Richard
and I have been lusting after a Tek 577/6 curve tracer for a while. If I lived
in the USA I would probably have one by now, but I live the UK
Thanks
for any help.
Richard
