[Elecraft] K3 AF audio problems

[Joe Subich, W4TV]

Scott, 

Check the RF chokes - L5 (Line In), L10 & L12 (rear panel Headphone 
switch) on the KIO3 Audio IO board.  L5 opened on mine resulting in 
nothing when using Line In.  If either L10 or L12 is open the K3 
will think you have headphones connected and disable the speakers 
(try CONFIG:SPKR+PH = Yes to confirm a problem with L10/L12). 

73, 

   ... Joe, W4TV 
 


> -----Original Message-----
> From: elecraft-bounces at mailman.qth.net 
> [mailto:elecraft-bounces at mailman.qth.net] On Behalf Of Scott Avery
> Sent: Sunday, November 09, 2008 12:58 AM
> To: elecraft at mailman.qth.net
> Subject: Re: [Elecraft] K3 AF audio problems
> 
> 
> Troubleshooting made easy....
> 
> The Main Speaker, internal and external no longer work.
> Also, Line input no longer works.
> 
> Need to use the phone lack to hear any audio.
> 
> Looks like a trip to the shop.. 
> 
> 73, Scott
> 
> 
> 
> From: Scott Avery 
> Sent: Saturday, November 08, 2008 6:57 PM
> To: elecraft at mailman.qth.net 
> Subject: [Elecraft] K3 AF audio problems
> 
> 
> Hello All,
> 
> Today, I was enjoying working some DX etc.
> All the sudden the AF audio out of my external speaker was 
> all distorted and cracking up. If I advance the AF gain past 
> 12 O'clock distortion happens on the external & internal 
> speaker. The Phone output is ok and not affected. Sounds 
> normal at full volume, but NOT main speaker! When changing 
> the audio gain parameter in menu from high to low, no 
> distortion, but the same as 12 O'clock position on AF gain. 
> Also, When powering up, sometimes the main speaker will not 
> work, but phones do. If I cycle the power to the K3, 
> Sometimes, when audio set above 12 O'clock, the audio will 
> sound good for a split second, then the radio backs off the 
> audio automatically, and sounds like crap.
> 
> Currently running latest beta software. Did revert back to 
> older software, but no change.
> 
> Any help appreciated!
> 
> 73, Scott WA6LIE
> K3 #1993
> 
> 
> 
> 
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