Re: HELP NEEDED with 465 #1
Stephen,
Yes, the HV multiplier is dead (i.e "shorted"). I did not recognize that "wire" sticking up vertically as a jumper. Should have know that was the end of the jumper.
--
Michael
By
Michael W. Lynch
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#193708
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Re: Looking For White Socket Side Covers for 7000 Plugins
CORRECTION: the part number in the eBay listing is actually for the white socket side covers. I'm not sure what the part numer of the main interface board is (it's not shown in the pictures. There are
By
Jeff Dutky
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#193707
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Re: 2465 Badge Picture Request
I uploaded a photo of the badge on my 2465 at /g/TekScopes/album?id=275497
It's pretty good and could be made better with a little touch up using a photo editing
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Tom Phillips
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#193706
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Re: Looking For White Socket Side Covers for 7000 Plugins
Barry,
I know exactly the listing you are referring to. It's a 3-slot board (Tek PN 672-0043-00), and the seller has four of them. The seller looks like a surplus parts dealer, and has thousands of
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Jeff Dutky
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#193705
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Re: Interpreting Transistor Curve Traces
I see where the manual covers this so I'll study on that before asking more questions.
Thanks,
Barry - N4BUQ
By
n4buq
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#193704
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Re: HELP NEEDED with 465 #1
/g/TekScopes/photo/275495/3437721?p=Created%2C%2C%2C50%2C2%2C0%2C0
Reattached loose wire to HV ground.
By
Stephen
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#193703
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Re: HELP NEEDED with 465 #1
On Tue, May 31, 2022 at 05:41 PM, Michael W. Lynch wrote:
Interleaved.
> Stephen,
>
> > The crackling noise does not come from the back of the CRT. I can actually
> see
> > (and hear) the small
By
Stephen
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#193702
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Re: HELP NEEDED with 465 #1
On Tue, May 31, 2022 at 10:23 AM, Stephen wrote:
>
> If the HV Multiplier has "failed open" it might allow the -2450 to
>
> >
> > remain unaffected.
>
> But in the case of a shorted or opened HV
By
Michael W. Lynch
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#193701
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Re: HELP NEEDED with 465 #1
I haven¡¯t tried inputting any signals yet. Will do though.
Best Regards,
Stephen
By
Stephen
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#193700
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Re: HELP NEEDED with 465 #1
On Tue, May 31, 2022 at 04:50 PM, Michael W. Lynch wrote:
Interleaved.
> The HV Multiplier does not create the -2450, that voltage comes from the HV
> Transformer. The HV Multiplier creates the
By
Stephen
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#193699
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Interpreting Transistor Curve Traces
Now that I've had some time to accustom myself with my 7CT1N, while I can make lots of pretty pictures, I'd like a better understanding of what information I can glean from the results, particularly
By
n4buq
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#193698
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Re: P6137 probe parts wanted
I'm not sure it's worth returning, particularly as it's my fault for buying the cheapest P6137 on eBay at the time. ?
I have another P6137 that cost several times what I paid for this one, and
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Dave Voorhis
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#193697
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Re: HELP NEEDED with 465 #1
You do not mention if there is any vertical deflection in response to an input signal. What happens if you apply a signal to either input channel?
--
Michael Lynch
Dardanelle, AR
By
Michael W. Lynch
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#193696
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Re: HELP NEEDED with 465 #1
The HV Multiplier does not create the -2450, that voltage comes from the HV Transformer. The HV Multiplier creates the 14kV Post Deflection Acceleration potential. If the HV Multiplier has "failed
By
Michael W. Lynch
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#193695
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Re: P6137 probe parts wanted
David sorry to hear about this.
Many disreputable sellers on epay especially from China.
Its difficult to get parts, and service th¨¨se.
Easier to find another one that's 100%.
If it's from eBay I
By
Jean-Paul
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#193694
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Re: HELP NEEDED with 465 #1
Did I mention that the Beam Finder is working and extremely bright, and that the intensity control has absolutely not effet on that vertical trace whatsoever? The wide and dim vertical trace runs the
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Stephen
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#193693
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Re: HELP NEEDED with 465 #1
I have. And as I said, all things considered, it ¡°seems¡± ok. Albeit a bit low, I suppose¡.
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Stephen
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#193692
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Re: HELP NEEDED with 465 #1
Hi Michael,
Both are standard 465, not B¡¯s. My 465B is working fine.
This one in particular is the one I got the HV replacement for a few years back.
As it turns out, the HV voltage is well
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Stephen
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#193691
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Re: HELP NEEDED with 465 #1
I would also check the HV multiplier as well.
--
Michael Lynch
Dardanelle, AR
By
Michael W. Lynch
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#193690
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Re: HELP NEEDED with 465 #1
Stephen,
Are these 465's or 465B's? There is no power on "pilot light" on a 465, instead, the 465 has a "Low Line" indicator. If that lamp is illuminated, then there is an issue with your line
By
Michael W. Lynch
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#193689
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