Re: fitting new 'sleepy eye' power indicator to 2465 'scope?
Thanks Greg - I got a replacement but the fine details of how this one operates does not exactly match that used in the 2465. As you say, the plastic construction is pretty delicate.
I will take
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Jon Nicoll
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#208997
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Re: Tektronix 2247A problem. Keep or return?
Thanks for the reply and perspective. I fully understand these are old scopes and have no problem pu
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Jay Czaja
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#208996
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Re: CRT's available
Hi:
Where are do you live if we want to pick
them up?
Walt
[email protected]> wrote:
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Walter Hunter
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#208995
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Re: Tektronix 2247A problem. Keep or return?
Jay,
I have two 2465's here, and they're known for quite a few gremlins, including NVRAM battery issues, among other problems.
In my case, I have two good ones, and I can have an excellent one by
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VE6WMR
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#208994
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Tektronix 2247A problem. Keep or return?
Hi folks. I recently purchased a Tek 2247A scope and upon testing it for the first time, it locked up when testing the B sweep with a msg that said
'INVALID INTERRUPT FROM 0993:F082'
When I
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Jay Czaja
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#208993
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Re: fitting new 'sleepy eye' power indicator to 2465 'scope?
Those switches were originally made by ITT Schadow many years ago and used to be available in many styles of buttons. I’ve seen failure of the indicator several times due to the delicate plastic
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Greg Muir
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#208992
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Re: fitting new 'sleepy eye' power indicator to 2465 'scope?
Actually, I'm going to reply to my own posting...
- I have realised that getting access to the power indicator is easier than I feared - just undo the Torx screws and take the front bezel off.
- It
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Jon Nicoll
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#208991
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Re: Dennis Tillman Tek 575 Curve Tracer Adapter PCB?
I can't help you on the circuit boards, but to you or anyone needing a 575 curve tracer, I want to sell mine.? I don't want to ship it.? Many other Tek items if interested.? I live not far from
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Carl Hallberg
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#208990
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Re: Dennis Tillman Tek 575 Curve Tracer Adapter PCB?
Hi, I am looking for one of Dennis's PCBs and I think the one you wrote about is the one I'm looking for. He and I were discussing it in emails a few years back and I got COVID and was down for a
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David Berlind
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#208989
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Re: What do you use as an MPS-U45 alternative?
Hi Clark.
Thanks for the replies.
The reason I asked, is that I am in Brazil and shipping from the US often starts around $40. Couple that with the $20 item price, and then the 100% import tax on
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James55
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#208988
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fitting new 'sleepy eye' power indicator to 2465 'scope?
Hi All
I have a Tek 2465 which has a small fault I am hoping to repair. This is the 'sleepy eye' power indicator on the front of the 'scope.
The power switch itself works fine; but the indicator
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Jon Nicoll
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#208987
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Need capacitor 290-0585-00, 350uf, 75V
Need cap 290-0585-00, 350uf, 75V. Anybody selling? I'm in MD 20882.
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naikm@...
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#208986
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Re: 492 has no 110 MHz IF
Actually not sure if I broke this or if it was broken before, since it was loose, but there are signs of scarring inside. Anyway, it sure is broken now. The series of photos shows how the bias return
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Adam R. Maxwell
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#208985
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5 photos uploaded
#photo-notice
The following photos have been uploaded to the 492 Bias Return ( /g/TekScopes/album?id=301504 ) photo album of the [email protected] group.
* IMG_2343.JPG (
By
Group Notification <noreply@...>
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#208984
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Re: What do you use as an MPS-U45 alternative?
I looked at eBay and there are many sellers of MPS-U45; some fair prices and many not fair. One is offering five for $20 shipping included.
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Clark Foley
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#208983
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Re: 492 has no 110 MHz IF
I think this is entirely correct. Much to my chagrin, I could reproduce this by heating a replacement 829 MHz 2nd converter, which also explains why I couldn't find a problem in the IF select board:
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Adam R. Maxwell
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#208982
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Re: What do you use as an MPS-U45 alternative?
I have a few MPS-U45 (151-0390-00). If you only need one or two, I can help.
Clark
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Clark Foley
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#208981
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What do you use as an MPS-U45 alternative?
Hi all.
Apart from the CEN-U45 is there a readily available replacement?
Some people are using TIP 102's with the legs crossed over...
Any other suggestions?
Thanks in advance.
James
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James55
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#208980
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Re: 492 has no 110 MHz IF
I'd say it's most likely a bad solder joint or broken part - something in series with the signal path such that it goes open, but still has some capacitance to couple an attenuated version of the
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ed breya
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#208979
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Re: Tek 4041 GPIB Controller
I seen your repository a while ago and was thoroughly impressed, though this was before I had the tapes or a terminal. I'll have to check it out further. Thanks for reminding me about it. Also thanks
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paraboliclabs@...
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#208978
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