[Hallicrafters] SX-101 Question

Mark K3MSB mark.k3msb at gmail.com
Mon Jun 14 21:22:04 EDT 2010


Somewhere I kept some notes on that Al;  I did the recap job back in Dec 08,
and can't find my notes any longer.

I do remember I gave up testing the BBODs before I replaced them all due to
the high failure rate, and that ALL of the 600V BBOD's failed at the
specified voltage.

I didn't test the Tiny Chiefs -- they got replaced anyway.

73 Mark K3MSB

On Mon, Jun 14, 2010 at 9:08 PM, Al Parker <anchor at ec.rr.com> wrote:

> Hi Larry, Mark, et al,
>        I was wondering if Mark found any difference in leakage between the
> BBOD's & the Tiny Chiefs.
>        12-13 yrs ago I was into my first SX-101 and the sel. sw. was
> surrounded by Tiny Chiefs.  I pulled a few loose & ckd them, they didn't
> leak so I left them.  Don't remember if I compared them to BBOD's then.
>  Recently I've been into an SX-96 which had a mixture of BBOD's and Tiny
> Chiefs.  I checked almost all, and found very few with objectional leakage,
> I think the T-C's were a bit better than the BBOD's.  I didn't change the
> T-C's on the sel. sw., did the 2 BBOD's on it, and did everything else.
>        One of these days I'll get into the SX-101A I've been using as found
> for about 5-6 yrs.
>        I need to pull out the ER articles and see if Ray O. mentions
> differences, and if he found discs vs BBOD's in the subchassis.
>
> 73,
> Al, W8UT
> www.boatanchors.org
> www.hammarlund.info
>
> "There is nothing -- absolutely nothing -- half so much
> worth doing as simply messing about in boats"
> Ratty, to Mole
>
> On 6/14/2010 8:54 PM, Larry wrote:
>
>> Thanks for the info Mark.  Most of the tubular capacitors are branded
>> "Tiny Chiefs"and are pink in color.  I am assuming these are about as
>> bad as BBOD's.  I haven't checked any for leakage yet.  Your web page
>> will be very useful for removing the sub-chassis.
>> Thanks,
>> Larry W4LK
>>
>>
>> On 6/14/2010 7:03 PM, Mark K3MSB wrote:
>>
>>> Here's how I removed my 2nd Converter Subchassis......
>>>
>>> http://www.k3msb.com/sx101a/subconverter/writeup.html
>>>
>>> Recapping is pretty straightforward,  and the converter removal isn't
>>> that bad....
>>>
>>> Of course, if there's any paper caps in it......
>>>
>>> 73 Mark K3MSB
>>>
>>> On Mon, Jun 14, 2010 at 10:24 AM, Larry<lkirkland at sc.rr.com
>>> <mailto:lkirkland at sc.rr.com>>  wrote:
>>>
>>>
>>>     Over the weekend I picked up a very nice SX-101 MKIII with great
>>>     cosmetics.  I am going to re-cap it over the next few weeks.  One
>>>     thing
>>>     that puzzles me is the "Pointer Reset" knob.  How does it work?
>>>      Does it
>>>     mechanically move the pointer or does it do it electrically by
>>>     shifting
>>>     the local oscillator freq?  The reason I ask is that the shaft
>>> appears
>>>     loose or disconnected over about a 45 degree rotation with hard
>>>     stops on
>>>     each end of the rotation.  What's involved on getting access to the
>>>     mechanism?
>>>
>>>     This is my first SX-101 and am looking forward to getting it up
>>>     and going.
>>>
>>>     Thanks,
>>>     Larry W4LK
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