[time-nuts] 10811 Outer oven controller schematic

[Rex]

I suspect by gas he meant gasoline.

I don't know about what paint remover he meant but I have another 
suggestion that might have worked. For cleaning label gunk off of used 
test equipment I have used automotive bug and tar remover. Seems to 
loosen up lots of gunk but not so strong it hurts the panel paint and 
lettering.


On 7/31/2013 1:51 AM, Magnus Danielson wrote:
> Paul,
>
> gas? What gas?
>
> what soft plastic paint remover?
>
> A little more specifics would help if someone is in the need.
>
> Cheers,
> Magnus
>
> On 20/07/13 23:22, paul swed wrote:
>> Hello to the group.
>> As the various posts mention pulling the outer oven and taped wire 
>> off is a
>> job. But thats done.
>> The Osc is 45 Hz low hot and 200 Hz low cold. Bobs on target with his
>> comment on what to expect. It does warm up and behave as you might 
>> expect
>> but its all relative not exact even according to the 10811 service 
>> manual.
>> So it could be off temperature. But very hard to say until I get a
>> thermocouple in there.
>> Will say the various rubbery stuff and shock absorbing stuff left one 
>> heck
>> of a gooey mess.
>> Oily sticky stuff.I tried oil, alcohol, turpentine, and finally gas. 
>> None
>> really did anything. But what did was a soft plastic paint remover. That
>> peeled the old tape and goo off very nicely.
>> What was left was the true glue and that was removable by gas.
>> It went from a gooey mess that stuck to everything to a pretty clean 
>> can.
>> Next I used a small torch one of those small butane refillable units. 
>> Had
>> it for years and never really had a use for it till now. I have 
>> started the
>> process of opening the can. Thats not complete yet. But I cleaned enough
>> goo off that when I heat things I don't have a smelly smoldering mess.
>> Regards
>> Paul
>> WB8TSL
>>
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>> On Sat, Jul 20, 2013 at 1:57 PM, Bob Camp<lists at rtty.us> wrote:
>>
>>> Hi
>>>
>>> If a 10811 oven is simply not working, the output will be> 400 Hz off
>>> frequency.
>>>
>>> Bob
>>>
>>> On Jul 19, 2013, at 12:48 PM, ed breya<eb at telight.com> wrote:
>>>
>>>> Paul,
>>>>
>>>> If the 10811 is that far off, are you sure the oven is working?  A few
>>> years ago mine had a failure of a particular date code range of the 
>>> opamp
>>> that controls the oven, that were prone to failure.at high temperature.
>>> The symptom in the Z3801A was that the outer oven seemed bad - it 
>>> did not
>>> turn on, but it was because it was waiting for the inner one to reach
>>> nominal temperature, but it never did. Once you get it all apart,
>>> replacement of the IC is no big deal, but what a PITA to get to it. I
>>> vaguely recall posting the whole story on that website that has big
>>> coverage of the Z3801A - I can't remember the name, since I haven't 
>>> been
>>> there in a while, but it should be easy to find. The website had all 
>>> kinds
>>> of Z3801A info, including a nice writeup on how to take the oven apart,
>>> which is where I started.
>>>>
>>>> Ed
>>>>