[Test-Equipment] AIL Tech 460 Sig Gent troubleshooting

[Dennis Wade]

Thanks Glenn and Tom.

Update:

In pursuing Tom's suggestion and doing a physical inspection, I found the
crispy critter.  It's on that board directly behind the front panel, the
one that looks nearly impossible to remove.  The only reason I found it is
because it "right" up at the top edge where I can see the scorched board
and carbonized plastic.  There isn't enough room to get my iron in there.
 :(

Now I think I will just have to study how this tank is actually put
together and start removing screws.  This thing *might* come out the front.

Stay tuned.

         Dennis




On Mon, May 26, 2014 at 10:19 PM, Glenn Little
<glennmaillist at bellsouth.net>wrote:

> Try Dave Henderson at Artek Manuals.
>
>
> He does not list it as available, but,he may know where to find the manual.
>
> Glenn
>
>
> At 10:49 PM 5/26/2014, you wrote:
>
>> Good evening,
>>
>>      Off topic for the Tek group I realize, but I know there are several
>> test equipment wizards there :).
>>
>>       Some time ago I went up to Oregon on a mission to buy some test
>> equipment, and came home with a few things, the subject generator among
>> them.  They all had been stored for a time, probably in a rather humid
>> environment.  Nothing in the way of rust or mold however.
>>
>>       Soon after, I plugged it in just to get a power on test and see if
>> everything lit up and maybe even a signal.  Well, everything lit up
>> alright, including an unknown component(s) which gave a nice puff of smoke
>> out the front cover.  I immediately shut it down and not having a shop to
>> speak of then, it went on the shelf.
>>
>>        Today, it came out and sat on the bench.  A previous note to this
>> group back then looking for a manual yielded nothing substantial.  Never
>> the less, here it sits, top, bottom and side covers off.
>>
>>         This thing is built like a tank.  The full right side is an RF
>> tight enclosure, that I will not touch unless absolutely necessary.  The
>> left side is occupied by a row of 8 vertically mounted PC boards numbered
>> (you guessed it) 1-8.  Behind the front panel is a rather populated PC
>> board that I have no idea how to get to if I had to.  Likewise, the power
>> supply occupies the back left corner of the chassis, and it is far from
>> apparent how it might come out if I needed to get into it.  There is a row
>> of test points on the bottom that are rather well marked with voltages.
>>
>>        I'd like to think that if I pull the cards and inspect them I'll
>> find the crispy critter and replace it/them, and check other components I
>> can get to.  There are ribbon connectors that have to come off though
>> before I can pull a lot of the cards. But, I'm waiting to see if I can get
>> any wisdom here.
>>
>>         So, has anyone worked on one of these?  Is there a manual for a
>> similar unit that is available from somewhere that would help (with
>> dis-assembly, for instance). Words of wisdom?  Light candles?
>>
>>         I have nothing, so any advice would help.  I'm happy to make pics
>> available if that would be helpful.
>>
>>        Thanks,
>>
>>            Dennis
>>
>> --
>> "If they trust you, it is an extraordinary privilege, and you simply can't
>> abuse it."
>>       - A. Alan Post  1914-2011.  California Legislative Analyst
>> 1949-1977.
>>
>> -------------------------
>> Dennis L. Wade
>> KG6ZI
>> Carmichael, CA
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-- 
"If they trust you, it is an extraordinary privilege, and you simply can't
abuse it."
      - A. Alan Post  1914-2011.  California Legislative Analyst 1949-1977.

-------------------------
Dennis L. Wade
KG6ZI
Carmichael, CA