K2 L34 variable inductor screw repair

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K2 L34 variable inductor screw repair

Mark Petrovic
While performing the IF alignment on my K2 s/n 7809, I must have backed the
slug on L34 too far up against the can.  Now the slug doesn't move when I
turn it one way or the other (at some point I was able to advance it
downward to the 1/2 way point).  Is there any way to re-index the slug onto
its threads so I can avoid replacing L34 and the desoldering that goes with
it?

Thanks.
Mark
AE6RT

--
Mark
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Re: K2 L34 variable inductor screw repair

Don Wilhelm
Mark,

The only way I know of to do it reliably is to replace the inductor.
I suspect you stripped the threads on the inside of the inductor core
and not the slug.  So just bite the bullet and replace the inductor.

73,
Don W3FPR

On 6/17/2018 11:41 AM, Mark Petrovic wrote:
> While performing the IF alignment on my K2 s/n 7809, I must have backed the
> slug on L34 too far up against the can.  Now the slug doesn't move when I
> turn it one way or the other (at some point I was able to advance it
> downward to the 1/2 way point).  Is there any way to re-index the slug onto
> its threads so I can avoid replacing L34 and the desoldering that goes with
> it?
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Re: K2 L34 variable inductor screw repair

Mark Petrovic
Thank you, Don.  I just finished the replacement.  I absolutely dread desoldering, but it gave me an opportunity to use the $25 desoldering iron with an in-line solder-sucker I had in reserve. I removed the solder from the pins, flush-cut the pins on the solder-side, and solder-sucked a coupke more times. I then gently rocked the part side to side on the component side of the board until it broke free.  


> On Jun 17, 2018, at 11:18 AM, Don Wilhelm <[hidden email]> wrote:
>
> Mark,
>
> The only way I know of to do it reliably is to replace the inductor.
> I suspect you stripped the threads on the inside of the inductor core and not the slug.  So just bite the bullet and replace the inductor.
>
> 73,
> Don W3FPR
>
>> On 6/17/2018 11:41 AM, Mark Petrovic wrote:
>> While performing the IF alignment on my K2 s/n 7809, I must have backed the
>> slug on L34 too far up against the can.  Now the slug doesn't move when I
>> turn it one way or the other (at some point I was able to advance it
>> downward to the 1/2 way point).  Is there any way to re-index the slug onto
>> its threads so I can avoid replacing L34 and the desoldering that goes with
>> it?
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