[Heathkit] HR-1680 Dead Band *UPDATE*

[Jonathan Jesse]

Hello everyone,
After going through the HFO circuit and finding it was OK.  I went 
through the HFO coil adjustment.  Still no oscillation.  I replaced the 
crystal with a Heathkit "pull" I found online.  The oscillator fired 
right up and the radio receives FB on 15 meters.
I took the old crystal to my ham/neighbor's house and he checked the 
crystal activity for me.  He said it showed good activity. Evidently not 
good enough though.  I wish I had checked the replacement before I 
soldered it in.
Thank you to everyone for your suggestions.  This project can now go in 
the very small fixed pile!
73,
Jon
WS1K

On 4/12/2016 2:36 PM, Jonathan Jesse wrote:
> Greetings,
> I just acquired a Heathkit HR-1680 receiver and HS-1661 speaker.
> The radio works fine on all bands but 15 meters.  I checked and see no 
> oscillation at 29.895 MHz.  I've been told that as these xtals age 
> they become hard to get oscillating.  I'm still early in my 
> troubleshooting but I'm presuming that's what my problem is.
> Has anyone come up with a fix without having to replace the xtal with 
> another that may also be aged and have the same problem?
> Thanks and 73,
> Jon
> WS1K
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