[Hallicrafters] My First Boat Anchor Restoration: SX101 MkIII

[rbethman]

Check that the fuse that is in-line with the "Damp Chaser" is good.

It will be under the chassis, and is simply in-line to the Damp Chaser.

*IF* it is blown, check the Damp Chaser to ensure it is NOT shorted.

It is a low amperage fuse.

Bob - N0DGN

On 11/14/2011 1:17 PM, Ross Stenberg wrote:
> Could be the LO is not on due to a resistive heating device (I forget
> what they are called) being open. I had it happen to me once and
> replaced it with a resistor and it came back to life.
>
> On 11/14/2011 10:20 AM, Jason Hissong wrote:
>> Hi guys,
>>
>> I am new to using and hopefully restoring old radios.  I have grown
>> particularly fond of Hallicrafters gear since I got my HT37 at Dayton
>> a few years back.  Well, I picked up an SX101 Mk III at Dayton this
>> past year.
>>
>> When I opened it up, it appears that someone already went in and
>> replaced the caps with Olsen type "TV" Capacitors.  It also appears a
>> few caps were added to the capacitor can in the power supply.  I was
>> told by local hams to replace the Olsen caps so I plan to do this.
>>
>> The unit is in great cosmetic condition.  When I fire it up, there is
>> no hum whatsoever.  All the features appear to work, selectivity,
>> volume, notch, mode switch, audio etc.  However, I hear barely
>> anything coming out of the receiver with the RF gain all the way up.
>> I went in a cleaned up the band switch contacts and that improved
>> things somewhat.  I can hear signals, however, the frequency does not
>> change when I turn the VFO knob. The volume changes (i.e, the receiver
>> appears to get less sensitive as I move away from a particular
>> frequency).  This only happens when the Calibrator is engaged (which I
>> picked up after I got the radio).  With the calibrator off, I hear
>> nothing.
>>
>> I went ahead and ordered a cap replacement kit for it from Hayseed.  I
>> am hoping there are some bad caps in there.
>>
>> Any tips or a general idea what may be going wrong would be
>> appreciated.  This will be my first boat anchor project.  I do have
>> experience building kits (I have build a few K2s, KX1, etc)
>>
>> Thanks es 73,
>> Jason N8XE
>>
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