[Hallicrafters] Aligning a S-76

[Ken And Susan Hittson via Hallicrafters]

Richard,
Thank you, this is a much clearer manual than I have. I also grabbed the Sams Photofact from Bama to get the corrected test points. 
Thanks again
Ken



> On Aug 11, 2015, at 1:09 PM, Richard Knoppow <1oldlens1 at ix.netcom.com> wrote:
> 
>     There is a different scan of the Hallicrafters manual at
> http://jptronics.org/Hallicrafters/manuals/halli.s-76.pdf
> 
>       Its not higher rez but the illustrations may be clearer.
>      The Sams manual is also on BAMA    This has the advantage of showing the test points on the schematic.
> 
> 
>> On 8/10/2015 8:28 PM, Ken And Susan Hittson via Hallicrafters wrote:
>> Hi Jim
>> I used  polyester film (yellow) capacitors on the bandwidth selector. All worked great the radio played old and clear. I took the 2nd mixer chassis off the main assembly, and replaced the two paper capacitors in there, along with two out of tolerance resistors, and the S-76 has been silent since then. I can detect a signal at T1, but I can no longer coax a sound out of the speaker. I replaced C20, C23, R20, and R 22. I checked the schematic, and the manuals and pics i took of the wires involved with the second mixer. I have tested tubes, and believe that I did not get all the wires I the correct position, but based on the schematic they are right.
>> Thanks, and all advice is appreciated.
>> Ken
>> 
>> 
>> 
>> 
>>> On Aug 10, 2015, at 9:43 PM, Jim Liles <hallicrafterssr2000 at k9axn.com> wrote:
>>> 
>>> Ken,
>>> 
>>> What kind of caps did you use on the band width selector switch?
>>> 
>>> Kindest regards Jim
>>> 
>>> -----Original Message----- From: Ken And Susan Hittson via Hallicrafters
>>> Sent: Friday, August 07, 2015 12:23 AM
>>> To: Hallicrafters at mailman.qth.net
>>> Subject: [Hallicrafters] Aligning a S-76
>>> 
>>> Hi All
>>> I am working on an S-76, which belongs to an old friend who has owned the radio since we were kids. I have recapped it, and replaced a couple of tubes which tested weak. Now I'm trying to align it, and am stuck on the 50hz if. I am using a .01 cap to isolate pin 1 of the 50hz if can (L6 on the Hallicrafters schematic), and cannot seem to get an unmodulated signal through. There is about 270vdc on that pin, so I have to couple to it through some method. Any advice is appreciated.
>>> Ken
>>> Ft Smith AR.
>>> 
>>> 
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> 
> -- 
> Richard Knoppow
> 1oldlens1 at ix.netcom.com
> WB6KBL
> 
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