[Hallicrafters] S-38A Recap problems

Roy Morgan roy.morgan at nist.gov
Wed Jan 25 15:28:30 EST 2006


At 02:57 PM 1/25/2006, Ka Nai`a wrote:
>I started to recap my S-38A by first replacing the line filter....when I 
>tune up and down it starts off at a decent volume at the ends of the dial 
>but as it gets
>closer to the middle it fades away to nothing.


Ka,

That is a symptom of a weak oscillator or mixer tube. Try new tubes in 
those positions one at a time, to see what happens,

It is not likely that this is due to the new line filter caps.

It is possible that one of the plates of the tuning capacitor has been bent 
and has upset the tracking.  If it shorts out as Glen suggests, the radio 
will not fade out but will just quit working as you tune the thing.

Roy

- Roy Morgan, K1LKY since 1959 - Keep 'em Glowing!
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