Re: [Elecraft] K3S issue

[Dave W8FGU]

Matteo,

I had the same with my build years ago. Turned out that I crushed one of 
the driver transistors while seating the amp. You might check that. I 
believe it is located near the rear panel.


I was able to straighten it out and get it working until I received a 
replacement from Elecraft.


73,
Dave W8FGU

On February 23, 2018 07:23:05 Matteo Gosi via Elecraft 
 wrote:



Hello,
I have finished to build my K3S but unfortunately I am experiencing some 
issue.Everything seems to work fine as no errors are showing in the display 
and when I did the TX gain calibration it went ok with no errors.I have the 
ATU and 100W PA installed.Basically what is happening is, if I keep the 
power up to 12W everything is ok but when I increase the power (I hear the 
relay clicking to engage the 100W PA) the received signal just drops to 
almost zero.I have taken the PA apart again to check if there was any 
damaged pins but all looks ok.

Does anyone experienced this issue?
PS. The PA put out 100w as it should.
73, MatteoM0TKM

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[Elecraft] K3S issue

[Matteo Gosi via Elecraft]

Hello,
I have finished to build my K3S but unfortunately I am experiencing some 
issue.Everything seems to work fine as no errors are showing in the display and 
when I did the TX gain calibration it went ok with no errors.I have the ATU and 
100W PA installed.Basically what is happening is, if I keep the power up to 12W 
everything is ok but when I increase the power (I hear the relay clicking to 
engage the 100W PA) the received signal just drops to almost zero.I have taken 
the PA apart again to check if there was any damaged pins but all looks ok.
Does anyone experienced this issue?
PS. The PA put out 100w as it should.
73, MatteoM0TKM

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Re: [Elecraft] K3s Issue

[Don Wilhelm]

Dave,

There are no menu items - KEYOUT should "simply work".
Make certain it is not the cable - put your ohmmeter in the KEYOUT jack.
During receive it should show an open circuit.
During transmit is should be close to zero ohms.
If that is how it behaves, the K3 is working properly.

Unfortunately, there is an unpredictability with lightning strike damage.
Devices (ICs, transistors, etc) may work when tested and then fail 
shortly afterwards.  That is something impossible to diagnose.


73,
Don W3FPR

On 9/11/2016 7:56 AM, David Blake via Elecraft wrote:

I have a K3s #10113 that was involved in a lightening strike and just returnedfrom 
Elecraft after repair and upgrades. My KIO3B was destroyed "beyondeconomic 
repair" and a trace was burned and repaired on the RF board.  Ihad the general 
coverage module add as well as the 8 - 10W 2 meter xvtr.
All looked and functioned well until I attached an amp. I have a couple of 
ampsboth had worked well with this K3s prior to lightening and were not 
involved inthe lightening incident.
When I connect the amp from the K3s "KEY OUT" jack to the "RELAY JACK" on 
inthis case an Ameritron AL80A the red TX lamp on the K3s comes on.
I've looked through everything in the manual looking for a menu item that I 
mighthave wrong but can't find a thing.  Additionally I called a friend who has 
owned ahalf dozen or more K3 and K3s transceivers and he has never seen this.
I'm not very technical, but at age 75 had little trouble assembling the K3s 
from kit.
I would hate to have to send my beloved K3s back to Elecraft again, 
especiallyat $100 shipping round trip!



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[Elecraft] K3s Issue

[David Blake via Elecraft]

I have a K3s #10113 that was involved in a lightening strike and just 
returnedfrom Elecraft after repair and upgrades. My KIO3B was destroyed 
"beyondeconomic repair" and a trace was burned and repaired on the RF board.  
Ihad the general coverage module add as well as the 8 - 10W 2 meter xvtr.
All looked and functioned well until I attached an amp. I have a couple of 
ampsboth had worked well with this K3s prior to lightening and were not 
involved inthe lightening incident.
When I connect the amp from the K3s "KEY OUT" jack to the "RELAY JACK" on 
inthis case an Ameritron AL80A the red TX lamp on the K3s comes on.
I've looked through everything in the manual looking for a menu item that I 
mighthave wrong but can't find a thing.  Additionally I called a friend who has 
owned ahalf dozen or more K3 and K3s transceivers and he has never seen this.
I'm not very technical, but at age 75 had little trouble assembling the K3s 
from kit.
I would hate to have to send my beloved K3s back to Elecraft again, 
especiallyat $100 shipping round trip!
Thanks  --  73Dave -N4DB-

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