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

[Howie]

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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