KX1 Transmitting Problem

[Jason Davis-3-3]

Hey Guys,

So last weekend I posted an message asking for help with my KX1.
After taking the top off, I thought I found the problem so I corrected it.
It appears I did not fix the problem for long.  Yesterday, after calling CQ
a few times, the same problem reared its ugly head again.

The problem:  The radio will sporadically transmit (almost constantly) a
series of "dahs" for no apparent reason.  After this happened last
weekend, I opened the case, and I thought the leads for the key jack ( J3 )
were not trimmed enough causing a short when the case was closed.  So I
trimmed the leads and all was well for a week.

I have had the rig for about a month now and it has operated flawlessly for
several weeks ( made several contacts ).  So it appears this problem has
developed over time.  Any suggestions would be greatly appreciated.

Jason
n9avg
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[Don Wilhelm-3]

Jason,

Check the board carefully for any solder bridges or near solder bridges in
the vicinity of J3, C33, R17, pin 24 of U1 and pin 5 of RP1.

If you have a lot of flux residue at any of the above points, scrape it away
and see if the problem is still present.  Often bits of metal can become
embedded and remain hidden in excess flux residue causing a solder bridge
that is veery difficult to detect.

73,
Don W3FPR

> -----Original Message-----
> So last weekend I posted an message asking for help with my KX1.
> After taking the top off, I thought I found the problem so I corrected it.
> It appears I did not fix the problem for long.  Yesterday, after
> calling CQ
> a few times, the same problem reared its ugly head again.
>
> The problem:  The radio will sporadically transmit (almost constantly) a
> series of "dahs" for no apparent reason.  After this happened last
> weekend, I opened the case, and I thought the leads for the key
> jack ( J3 )
> were not trimmed enough causing a short when the case was closed.  So I
> trimmed the leads and all was well for a week.
>
> I have had the rig for about a month now and it has operated
> flawlessly for
> several weeks ( made several contacts ).  So it appears this problem has
> developed over time.  Any suggestions would be greatly appreciated.
>
> Jason
> n9avg
>

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