Re: looking for LEMO power supply jack (ERA.OS.304.CLL)
My intended point was that a scrap or "spares" 1101 or 1101a could also provide the needed connectors. Chuck
On Fri, Mar 14, 2025 at 6:12 PM, John Gord via groups.io <johngord@...> wrote: Bill,
You don't need the separate supply; you can just add the power jacks to the 2465B.? They were available as an option (option 22, I think), and the connections for them are already present on the Regulator Board as J201 and J202.? The outlines of the holes are visible on the back panel, and the connectors and their internal cables are shown as item 33 on the Chassis mechanical drawing.
You just need the connectors an some wiring.
--John
?
On Fri, Mar 14, 2025 at 04:33 PM, bill K7WXW wrote:
Wondering if anyone who has a "spares" 465, 475, or 485 would be willing to pull a couple of the LEMO power jacks from the back (the four pin jackused to power Tek probes that use +/-15VDC) for me. ?I want to build a stand alone power supply so I can use some of my power-required probes on my 2465B, which aren't equipped with them. ?
email is K7WXWatqrpdxdotnet or message me here.
Thanks!
Bill
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Re: looking for LEMO power supply jack (ERA.OS.304.CLL)
Bill,
You don't need the separate supply; you can just add the power jacks to the 2465B.? They were available as an option (option 22, I think), and the connections for them are already present on the Regulator Board as J201 and J202.? The outlines of the holes are visible on the back panel, and the connectors and their internal cables are shown as item 33 on the Chassis mechanical drawing.
You just need the connectors an some wiring.
--John
?
On Fri, Mar 14, 2025 at 04:33 PM, bill K7WXW wrote:
Wondering if anyone who has a "spares" 465, 475, or 485 would be willing to pull a couple of the LEMO power jacks from the back (the four pin jackused to power Tek probes that use +/-15VDC) for me. ?I want to build a stand alone power supply so I can use some of my power-required probes on my 2465B, which aren't equipped with them. ?
email is K7WXWatqrpdxdotnet or message me here.
Thanks!
Bill
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Re: looking for LEMO power supply jack (ERA.OS.304.CLL)
Another source would be a Tek 1101 or 1101a probe power supply.
On Fri, Mar 14, 2025 at 4:33 PM, bill K7WXW via groups.io <K7WXW@...> wrote:
Wondering if anyone who has a "spares" 465, 475, or 485 would be willing to pull a couple of the LEMO power jacks from the back (the four pin jackused to power Tek probes that use +/-15VDC) for me. ?I want to build a stand alone power supply so I can use some of my power-required probes on my 2465B, which aren't equipped with them. ?
email is K7WXWatqrpdxdotnet or message me here.
Thanks!
Bill
|
looking for LEMO power supply jack (ERA.OS.304.CLL)
Wondering if anyone who has a "spares" 465, 475, or 485 would be willing to pull a couple of the LEMO power jacks from the back (the four pin jackused to power Tek probes that use +/-15VDC) for me. ?I want to build a stand alone power supply so I can use some of my power-required probes on my 2465B, which aren't equipped with them. ?
email is K7WXWatqrpdxdotnet or message me here.
Thanks!
Bill
|
You can DL the 2465B manual direct from tek.com and that is a very high-quality PDF. ? D. ?
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From: [email protected] <[email protected]> On Behalf Of Saroj Pradhan via groups.io
Sent: 14 March 2025 01:29
To: [email protected]
Subject: Re: [TekScopes2] 2465B with no trace? Dear Jon
Thanks for your response.
I had downloaded the manual from the site manualslib couple of days before and downloaded the manual from the site you described. It seems little difficult to follow when it comes to schematic and assembly drawing section. I understand the manuals are downloaded free of cost and cannot hope for better as originals.
Regards
Saroj ? On Thu, Mar 13, 2025, 8:47 PM Froggie the Gremlin via <jonpaul=[email protected]> wrote: Hello again dear Sir,
See W140/ tekwiki for all Tektronix manuals in PDF
Also the Vintage Tektronix Museum
Manual you need is service, for the? the serial number and exact model, options
Artek has printed reproductions.? Cost - 40-80$
Ebay may have originals, but seldom and costly.
We DL the PDF,and print sections as,needed
Follow the troubleshooting flow charts.
Enjoy
Jon
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Dear Jon
Thanks for your response.
I had downloaded the manual from the site manualslib couple of days before and downloaded the manual from the site you described. It seems little difficult to follow when it comes to schematic and assembly drawing section. I understand the manuals are downloaded free of cost and cannot hope for better as originals.
Regards
Saroj
On Thu, Mar 13, 2025, 8:47 PM Froggie the Gremlin via <jonpaul= [email protected]> wrote: Hello again dear Sir,
See W140/ tekwiki for all Tektronix manuals in PDF
Also the Vintage Tektronix Museum
Manual you need is service, for the? the serial number and exact model, options
Artek has printed reproductions.? Cost - 40-80$
Ebay may have originals, but seldom and costly.
We DL the PDF,and print sections as,needed
Follow the troubleshooting flow charts.
Enjoy
Jon
|
Hello again dear Sir,
See W140/ tekwiki for all Tektronix manuals in PDF
Also the Vintage Tektronix Museum
Manual you need is service, for the the serial number and exact model, options
Artek has printed reproductions. Cost - 40-80$
Ebay may have originals, but seldom and costly.
We DL the PDF,and print sections as,needed
Follow the troubleshooting flow charts.
Enjoy
Jon
|
Hi Jon?
Thanks for the info.?
By the How can I get the manual from you?
Regards
Saroj
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Thank you Roger for the information
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Hello,
0/ get full service manual for your model and serial
1/ be sure all LVPS are correct V and noise, hum in spec
2/ on 2465B check A5 control bd for leaking SMD electrolytic se damages.
3/ check beam finder button, HV, CRT ckt for usual, HV mult, transformers, high value resistors
resources
Groups.io, tekscopes and tekscopes2
EEVblog search 2465 teardown 80 pages,of,tips, repair, recap
Condor Audio in Israel, recapping kits and assistance
Vintage Tek, Beaverton
Bon chance
Jon
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/g/TekScopes, it was the original TekScopes group and TekScopes2 is a later offshoot.
?
Roger
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Hi Roger
Thanks for your kind response.?
OK I will go there. Could you tell me how do I get there? Is it totally different site?
Regards
Saroj?
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Go to the 'other' group ie TekScopes rather than TekScopes2 and search on ' 2465b a5 board repair' and '2465b dac reference'.? Most of the front panel controls on the 2465 just set voltages which are read by the CPU and a ADC.? The real work is done by the DAC and a set of sample and hold circuits which drive the X and Y amplifiers, time bases, trigger circuits etc.? If the DAC reference voltages are wrong then almost everything misbehaves.? Don't be tempted to change the preset controls until you have fixed the DAC references, you will need to recalibrate later!? (resetting just the CRT grid bias is quite straightforward)
?
Your symptoms are typical of corrosion damage on the A5 board following leakage of electrolyte, resistors change value or go open circuit, PCB traces and vias? get damaged, and maybe other things.? You need to look carefully at the A5 board with good lighting and a magnifying glass or eye glass if you have one.? Also check the posts that you will find in TekScopes for the points where you can check the DAC references.
?
Best of luck,
?
Roger
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Hi every one!? To day I verified the low voltage power supply at j119. The all the voltages are within the limit. Visually all the electrolytic capacitors looks good on both power supply and A5 control boards. There is no sign of leakage. Ripples are within limit.? Today when I power on the scope self test stuck at add led.(it did pass self test yesterday) The message was TEST 05 FAIL 24 I search this test fail message on the net to find the possible cause. Everybody suggest to look into A5 control board specifically DAC312 and srounding baising component and leaky electrolytic capacitor. In my case there is no leaky capacitor, board looks fresh no Track damage. Measuring the DC voltage at Vref pin 14 and 15 of U2101 I found that? Vref voltage are in the mv range around 145mv. Do some one came across same situation? Please guide me to rule out problem in A5 board.? Thanks
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Re: Tektronix TDS754D - failing acquisition module tests
That makes perfect sense, thank you, Jared. I assume, once I recover my adapter (just realized it's currently?on loan), I need to run the commands via Python (the only way I know).? Radu.?
The scope doesn't care what GPIB adapter you use, if it works on other gear, it'll work on the scope.
?
You only need the specific National Instruments GPIB card for running the Tektronix calibration software.
?
All other GPIB functions can be done with any working GPIB adapter.
?
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Jared.
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Re: P6610 physcial measurement amplifier
Thanks Dave. This is a start. That's the transducer (I have three, of varying pressures) and the probe assembly, the P6610.? Definitely a Tektronix product though that's all I know.
?
Bill
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Re: Tektronix TDS754D - failing acquisition module tests
The scope doesn't care what GPIB adapter you use, if it works on other gear, it'll work on the scope.
?
You only need the specific National Instruments GPIB card for running the Tektronix calibration software.
?
All other GPIB functions can be done with any working GPIB adapter.
?
?
?
Jared.
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Dear Jeff,
The Tektronix high quality crimp BNC and cables diameter, stiffness are distinctive
Any photos of a comparison the RG58/U vs RG 233 cables ?
I acquired the Tektronix c?bles decade's ago, from a silent key friend.s estate.
Later , a bunch new in original Tektronix package, labels
from our old friend Richard Cabot, ex Tektronix and founder of Audio Precision
I wonder if the cable you received was a Chinese knock-off ?
Bonsoir
Jon
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Jon, recently I ordered a cable from a distributer I received a sub-par non Tektronix cable even though I ordered 012-0482-00.
I returned that cable and contacted Tek tech to be sure if I ordered another cable I would receive the correct type.
Their search determined the problem and the cause, they informed me of the circumstances and have supplied me with the corrected cable
as 012-0482-01.
No, I had no reason to test an Amphenol 36" cable assembly made with Southwire RG-58/U cable $17.00 new in bag as an 012-0482-00? for $88.00+ as it was obviously incorrect. The surprise was that Tektronix had a mislabeled drawing and had some RG-58/U made and in stock.
As I said this has been corrected, no further information was passed to me.
--
Jeffeelcr
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Hi
I recently acquired 2465B.
At power on the self test passes with no trace.?
Short description about the scope:
It has serial no b065557
It has smd in A5 board.
?
After searching in the net I came across a point that adjusting grid bias trace can be made visible. Accordingly I got the trace with following issues :
Intensity control has no effect.?
Focus control has effect.?
Read out intensity has effect
Scale illumination works
CH1 and CH2 vertical position can be changed within only one division mark while
CH3 and CH4 vertical position can be changed from lower to upper side.?
Screen frame is shifted 1division
Below.
?
And one more thing in the first quarter of the screen there is a message:
A1 - 02 v?? This number changes according to the position of CH1 volt/div switch
I have the service manual downloaded. I? have been going through manual for last few days.?
If some body has idea where where to look for the fault. By the way I wsa able to fix my 2230 5 years back using this group. Thank?
Leo once again your patience and support.?
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bill K7WXW
David C. Partridge
Froggie the Gremlin
Jared Cabot