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Sci.Electronics.Basics -> (Using Lab-Volt System) Have the books, how do I get a trace on my 465 Tektronix oscilloscope
There are 24 messages in this thread.
You are currently looking at messages 20 to 24.
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Author: Chris LDate: 20:50 01-10-07
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On Sep 29, 4:41 pm, ehsjr <eh...@bellatlantic.net> wrote:
> Chris L wrote:
> > Can I ask for suggestions at this point?
>
> > Thanks,
> > Chris Lusardi
>
> Check the voltages, per the service manual.
Huh, can you be generously more specific?
Chris Lusardi
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Author: ehsjrDate: 02:13 02-10-07
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Chris L wrote:
> On Sep 29, 4:41 pm, ehsjr <eh...@bellatlantic.net> wrote:
>
>>Chris L wrote:
>>
>>>Can I ask for suggestions at this point?
>>
>>>Thanks,
>>>Chris Lusardi
>>
>>Check the voltages, per the service manual.
>
>
> Huh, can you be generously more specific?
>
> Chris Lusardi
>
No - and it's not a question of generosity. The service manual
is very specific. The Ebay entry said the sale to you included
the Tektronix 475 service manual. I cannot do a better job than
they have done in the manual. The first step in diagnosis, per
the manual, is checking the voltages. The manual tells you how
to set the controls on the scope for each voltage you need to
check, which voltage to check first, second, third, etc., what
the voltage measurements should be, where the test points are
and so forth. In short, it tells you everything a technician
needs to know to check the voltages. It does assume that you
know how to use test equipment without destroying either
yourself or the test equipment or tthe 'scope you are servicing.
You probably have a DMM, which will be suitable for most of
the checks. If you don't have one, buy one. Even a cheap (<$50)
DMM will be fine to find a supply out of whack enough to cause
the problem you have. You will need a high voltage probe to check
the high voltage, if all the other voltages check out ok. As I
recall, the high voltage was the last, or close to the last,
voltage check to make, so you may find a bad supply before you get
to that. If so, fixing the bad supply may restore proper operation,
and you won't need to go any further.
If you do end up with a failure in the HV section, do not attempt
to repair it using any old solder. Tek used special solder on the
ceramic strip contacts that some of the high voltage parts get
soldered to. They included a small amount of solder for repair
purposes on the inside of the back cover. It is needed only for
connections to the contacts on the ceramic strips - regular rosin
core solder can be used elsewhere.
Ed
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Author: Chris LDate: 20:43 07-10-07
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On Oct 2, 3:13 am, ehsjr <eh...@bellatlantic.net> wrote:
> Chris L wrote:
> > On Sep 29, 4:41 pm, ehsjr <eh...@bellatlantic.net> wrote:
>
> >>Chris L wrote:
>
> >>>Can I ask for suggestions at this point?
>
> >>>Thanks,
> >>>Chris Lusardi
>
> >>Check the voltages, per the service manual.
>
> > Huh, can you be generously more specific?
>
> > Chris Lusardi
>
> No - and it's not a question of generosity. The service manual
> is very specific. The Ebay entry said the sale to you included
> the Tektronix 475 service manual. I cannot do a better job than
> they have done in the manual. The first step in diagnosis, per
> the manual, is checking the voltages. The manual tells you how
> to set the controls on the scope for each voltage you need to
> check, which voltage to check first, second, third, etc., what
> the voltage measurements should be, where the test points are
> and so forth. In short, it tells you everything a technician
> needs to know to check the voltages. It does assume that you
> know how to use test equipment without destroying either
> yourself or the test equipment or tthe 'scope you are servicing.
>
> You probably have a DMM, which will be suitable for most of
> the checks. If you don't have one, buy one. Even a cheap (<$50)
> DMM will be fine to find a supply out of whack enough to cause
> the problem you have. You will need a high voltage probe to check
> the high voltage, if all the other voltages check out ok. As I
> recall, the high voltage was the last, or close to the last,
> voltage check to make, so you may find a bad supply before you get
> to that. If so, fixing the bad supply may restore proper operation,
> and you won't need to go any further.
>
> If you do end up with a failure in the HV section, do not attempt
> to repair it using any old solder. Tek used special solder on the
> ceramic strip contacts that some of the high voltage parts get
> soldered to. They included a small amount of solder for repair
> purposes on the inside of the back cover. It is needed only for
> connections to the contacts on the ceramic strips - regular rosin
> core solder can be used elsewhere.
>
> Ed- Hide quoted text -
>
> - Show quoted text -
Next weekend, I'm going to open and use my as of yet unopened brand
new Frys handheld oscilloscope and leave the 475 oscillocope for
later. Does anyone have any advice on using the Frys oscilloscope?
I want to say thanks to everyone who answered my earlier posts. Again,
I'll try the 475 later.
Thank you,
Christopher Lusardi
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Author: Rich GriseDate: 16:41 08-10-07
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On Sun, 07 Oct 2007 17:43:07 -0700, Chris L wrote:
> Next weekend, I'm going to open and use my as of yet unopened brand new
> Frys handheld oscilloscope and leave the 475 oscillocope for later. Does
> anyone have any advice on using the Frys oscilloscope?
When all else fails, read the instruction manual. ;-)
Cheers!
Rich
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