[Hallicrafters] SX-100 What's going on?

[Edward B Richards]

Hi Skip;

Might be the oscillator is stopping. With oscillator problems the higher
frequencies go first. Look for a high negative voltage on the oscillator
grid. Good luck.

73, Ed Richards K6UUZ


On Sat, 13 Nov 2004 20:26:19 -0800 Waldo Magnuson <magnuson at mac.com>
writes:
> Hi All,
>     I'm still having trouble aligning my SX-100 (and even getting it 
> to 
> work consistently).  Last evening I thought I had it aligned on the 
> BC 
> band and it was playing well.  This morning - the band is dead.  
> Later, 
> the lower part of the band has reception.  The tubes all look good 
> at 
> least to the tube tester.  Capacitors (electrolytic and paper) have 
> all 
> been replaced, 80% of the resistors checked, voltages look ok.  Does 
> 
> anyone have a voltage pin-out for the SX-100?  The receiver acts 
> like 
> there is an intermittent.  Any suggestions on what to look for?  
> Thanks.
> 73,  Skip Magnuson  W7WGM
> 
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