[Test-Equipment] WTD: Help with old scope problem

[J. Forster]

I tried that, but ran into problemws.

I found a DejaVu viewer and have now made it into a .pdf.

Thanks,

-John

====================


> Go to irfanview website and download the plugins file.
> ----- Original Message -----
> From: "J. Forster" <jfor at quik.com>
> To: "Discussion of Electronic Test Equipment"
> <test-equipment at mailman.qth.net>
> Sent: Saturday, October 09, 2010 12:59 PM
> Subject: Re: [Test-Equipment] WTD: Help with old scope problem
>
>
>> Hi Joe,
>>
>> I just downloaded it but my Irfan View does not have the DejaVu PI. I'm
>> looking.
>>
>> Best,
>>
>> -John
>>
>> ==============
>>
>>> Thank you John,
>>> I understand that there is a copy of he manual available at
>>> http://bama.edebris.com/manuals/tek/310a, it is in DejaVu format so you
>>> may
>>> need an image viewer (Irfan View or Xn View).
>>> If you cannot access it, I'll be happy to have the schematics from my
>>> manual
>>> copied and sent to you. It would be a small price to pay if it helps to
>>> bring the scope back to like.
>>> Joe
>>>
>>> ----- Original Message -----
>>> From: "J. Forster" <jfor at quik.com>
>>> To: "Discussion of Electronic Test Equipment"
>>> <test-equipment at mailman.qth.net>
>>> Sent: Friday, October 08, 2010 11:20 AM
>>> Subject: Re: [Test-Equipment] WTD: Help with old scope problem
>>>
>>>
>>>> Joe,
>>>>
>>>> Do you have a link to the schematic? I'll be happy to take a look, but
>>>> couldn't find the print in a quick search.
>>>>
>>>> Best,
>>>>
>>>> -John
>>>>
>>>> ===============
>>>>
>>>>
>>>>> Joe,
>>>>>
>>>>> If you don't get any horizontal movement even from the external
>>>>> inputs
>>>>> then
>>>>> the problem is between them and the CRT deflection plates.  As the
>>>>> vertical
>>>>> works, the problem must be in the horizontal amp.  But I wouldn't
>>>>> know
>>>>> whether that is one stage or several.
>>>>>
>>>>> In a message dated 10/8/2010 12:55:48 PM Central Daylight Time,
>>>>> josepho at shaw.ca writes:
>>>>>>
>>>>>> Thank you Bob, the rest of the messages received agree with a
>>>>>> problem
>>>>>> on
>>>>>> the
>>>>>> horizontal sweep, question what is the guilty component?
>>>>>> Joe
>>>>>> ----- Original Message -----
>>>>>> From: <WA5CAB at cs.com>
>>>>>> To: <test-equipment at mailman.qth.net>
>>>>>> Sent: Thursday, October 07, 2010 4:05 PM
>>>>>> Subject: Re: [Test-Equipment] WTD: Help with old scope problem
>>>>>>
>>>>>>
>>>>>> >Joe,
>>>>>> >
>>>>>> >I'm not familiar with the 310 but your last point (spot splits in
>>>>>> two)
>>>>>> is
>>>>>> >consistant with loss of horizontal sweep.  The cal signal is a
>>>>>> square
>>>>>> >wave.
>>>>>> >The vertical amp is still moving the trace up and down as it
>>>>>> should.
>>>>>> >
>>>>>> >In a message dated 10/7/2010 5:55:42 PM Central Daylight Time,
>>>>>> >xyzzypdx at gmail.com writes:
>>>>>> >>>Hello
>>>>>> >>>For a number of years Ihave been using a Tek 310A on my bench. I
>>>>>> like
>>>>>> it
>>>>>> >>on spite of its age and limited BW because of its small size and
>>>>>> sharp
>>>>>> >>trace. Recently,after not have been used for some months, presnted
>>>>>> a
>>>>>> >>number of
>>>>>> >>problems.
>>>>>> >>>- There is no horizontal trace, only a spot.
>>>>>> >>>- The spot can be moved in both directions (V&H).
>>>>>> >>>- The focus control has only limited effect on the spot.
>>>>>> >>>- The intensity control has no effect on it.
>>>>>> >>>- The tubes related to the horizontal and sweep sections check
>>>>>> OK.
>>>>>> >>>- There are no broken, burnt or overheated components.
>>>>>> >>>- LV voltages are OK but I cannot get a reading on the HV test
>>>>>> point
>>>>>> >>(5642 rectifiers).
>>>>>> >>>- If I apply a signal from the voltage calibrator, the spot
>>>>>> splits
>>>>>> on
>>>>>> >>two.
>>>>>> >>>Any suggestions as to the cause of these problems (and fixes)
>>>>>> will
>>>>>> be
>>>>>> >>greatly appreciated.
>>>>>> >>>Thanks
>>>>>> >>>Joe Orgnero  VE7LBI
>>>>>> >>
>>>>>>
>>>>>
>>>>> Robert & Susan Downs - Houston
>>>>> wa5cab dot com (Web Store)
>>>>> MVPA 9480
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>>>>
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