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Re: Have a 2467B. Suggestions please on very poor focus
Siggi,
I already complained about Ronan's cross-posting. His main thread is on TekScopes-2.
Here's the link to the video:
**** QUOTE ****
The following files have been uploaded to the Files area of
Siggi,
I already complained about Ronan's cross-posting. His main thread is on TekScopes-2.
Here's the link to the video:
**** QUOTE ****
The following files have been uploaded to the Files area of
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By
Raymond Domp Frank
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#184223
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Re: Have a 2467B. Suggestions please on very poor focus
wrote:
I'd love to see that video, if only for reference to my 2467.
wrote:
I'd love to see that video, if only for reference to my 2467.
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By
Siggi
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#184222
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Re: Have a 2467B. Suggestions please on very poor focus
Ronan,
We're seeing the principal reason for my dislike of cross-posting.
You're getting responses from people who are unaware of what has been achieved and established already.
I fell into the same
Ronan,
We're seeing the principal reason for my dislike of cross-posting.
You're getting responses from people who are unaware of what has been achieved and established already.
I fell into the same
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By
Raymond Domp Frank
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#184221
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Re: Have a 2467B. Suggestions please on very poor focus
Hi Mark,
Ronan's 'scope works fine, generally, as can be seen in his video. Except for the Rifa caps, replacement of components isn't "compulsory" and even risky if one doesn't have the experience and
Hi Mark,
Ronan's 'scope works fine, generally, as can be seen in his video. Except for the Rifa caps, replacement of components isn't "compulsory" and even risky if one doesn't have the experience and
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By
Raymond Domp Frank
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#184220
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Re: Have a 2467B. Suggestions please on very poor focus
Ronan,
Check the power supply voltages for d-c and ripple. The electrolytics, some resistors and several tantalums are known to give problems. Mr. Yachad of Condor Audio has a parts kit for the
Ronan,
Check the power supply voltages for d-c and ripple. The electrolytics, some resistors and several tantalums are known to give problems. Mr. Yachad of Condor Audio has a parts kit for the
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By
Mark Vincent
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#184219
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Re: My 475
Rey,
When you say that "the screen lites up" what do you mean by that? Are you saying that you have two straight lines, but when you apply a signal to either input channel you don't get any vertical
Rey,
When you say that "the screen lites up" what do you mean by that? Are you saying that you have two straight lines, but when you apply a signal to either input channel you don't get any vertical
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By
Jeff Dutky
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#184218
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Re: My 475
Dagnabit -- you're right, Dave. I'm apparently thinking of a chart in some manual for another model.
-- Cheers,
Tom
--
Prof. Thomas H. Lee
Allen Ctr., Rm. 205
350 Jane Stanford Way
Stanford
Dagnabit -- you're right, Dave. I'm apparently thinking of a chart in some manual for another model.
-- Cheers,
Tom
--
Prof. Thomas H. Lee
Allen Ctr., Rm. 205
350 Jane Stanford Way
Stanford
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By
Tom Lee
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#184217
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Re: My 475
Just scanned the 475 SM online doc. I didn't find a diagnosis chart - is that not in the online 475 manual?
Wanted to throw this in the suggestion box - after checking and verifying the LV supplies:
Just scanned the 475 SM online doc. I didn't find a diagnosis chart - is that not in the online 475 manual?
Wanted to throw this in the suggestion box - after checking and verifying the LV supplies:
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By
Dave Peterson
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#184216
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Re: My 475
Welcome!
Standard procedure is to check the supplies (there are several in that scope). A quite common problem is a shorted "teardrop" tantalum capacitor, but a few quick measurements will tell you a
Welcome!
Standard procedure is to check the supplies (there are several in that scope). A quite common problem is a shorted "teardrop" tantalum capacitor, but a few quick measurements will tell you a
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By
Tom Lee
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#184215
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Re: My 475
Check all of the LV power supplies. That's always the first stop. Get the
service manual and make sure all of the supplies are within spec for voltage
AND ripple. Nothing works if the power
Check all of the LV power supplies. That's always the first stop. Get the
service manual and make sure all of the supplies are within spec for voltage
AND ripple. Nothing works if the power
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By
Paul Amaranth
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#184214
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Re: My 475
My inbuilt autoresponder says: "Check the low voltages" and report back. The voltages are interdependent.
Highly likely you'll find a defective/shorted (Tantalum) capacitor.
Use dwg11 in the service
My inbuilt autoresponder says: "Check the low voltages" and report back. The voltages are interdependent.
Highly likely you'll find a defective/shorted (Tantalum) capacitor.
Use dwg11 in the service
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By
Raymond Domp Frank
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#184213
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Have a 2467B. Suggestions please on very poor focus
[Cross-posted to TekScopes2 and Tektronix]
Greetings!
I've acquired a 2467B, with no power-up error codes, but very poor focus. It has SN of BO50000+.
It's been in storage some years. I let it
[Cross-posted to TekScopes2 and Tektronix]
Greetings!
I've acquired a 2467B, with no power-up error codes, but very poor focus. It has SN of BO50000+.
It's been in storage some years. I let it
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By
Ronan
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#184212
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My 475
Hi guys, my first post here looking for answer I found this place. I'm looking for a bit of guidance, my 475 just quit it was working fine. Both channels are gone, no beam find. Every switch light
Hi guys, my first post here looking for answer I found this place. I'm looking for a bit of guidance, my 475 just quit it was working fine. Both channels are gone, no beam find. Every switch light
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By
Rey
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#184211
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Dennis Tillman
[I erroneously posted this message on the TekScopes-2 group first.
Sorry about that!]
A few days ago, I sent a PM to Dennis, because I hadn't seen a message from him for a while.
So far, no
[I erroneously posted this message on the TekScopes-2 group first.
Sorry about that!]
A few days ago, I sent a PM to Dennis, because I hadn't seen a message from him for a while.
So far, no
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By
Raymond Domp Frank
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#184210
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Re: Trouble shoot and extremely stubborn 465B
Congratulations!
I hope my two suggestions
"Don't ignore the possibility of someone having made an assembly error"
and
"I'd check the trigger inputs to the trigger logic board (dwg6 area A1 -A2). You
Congratulations!
I hope my two suggestions
"Don't ignore the possibility of someone having made an assembly error"
and
"I'd check the trigger inputs to the trigger logic board (dwg6 area A1 -A2). You
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By
Raymond Domp Frank
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#184209
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Re: Members in Australia
John
Slightly OT
I need some help to source some spare parts in Oz, from Wagner and another supplier.
If any Oz members are willing to help , please reply to me - yachadm AT gmail DOT
John
Slightly OT
I need some help to source some spare parts in Oz, from Wagner and another supplier.
If any Oz members are willing to help , please reply to me - yachadm AT gmail DOT
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By
M Yachad
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#184208
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Re: Members in Australia
If you aren't already aware of it, can I note that there are many such people on the EEVBlog Forum.
It has active sub-forums for test equipment and for equipment wanted and for
If you aren't already aware of it, can I note that there are many such people on the EEVBlog Forum.
It has active sub-forums for test equipment and for equipment wanted and for
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By
Tom Gardner
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#184207
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Re: Trouble shoot and extremely stubborn 465B
*SOLVED* seems the tech before me that was in this unit flipped 2 of the micro coax lines. J1101 and J1002 were flipped on the vertical board side. Seems everything was testing good because it was. I
*SOLVED* seems the tech before me that was in this unit flipped 2 of the micro coax lines. J1101 and J1002 were flipped on the vertical board side. Seems everything was testing good because it was. I
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By
Zentronics42@...
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#184206
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Re: Trouble shoot and extremely stubborn 465B
After a night of trouble shooting I think I have traced it to at least the offending section if not the dead part. Putting a square wave on the channel 2 input I have what I think is the expected wave
After a night of trouble shooting I think I have traced it to at least the offending section if not the dead part. Putting a square wave on the channel 2 input I have what I think is the expected wave
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By
Zentronics42@...
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#184205
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Re: 454A Repair
Verify that the horizontal sweep is working.
— Jeff Dutky
Verify that the horizontal sweep is working.
— Jeff Dutky
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By
Jeff Dutky
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#184204
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