[Elecraft] Did I fry my KXPA100?

[Tom]

Hi,
Just to be sure, I disconnected all control signal, only RF into the amp at 
10W....
No output, but no errors in the KXPA100 utility.
73 Tom
va2fsq.com

-----Original Message----- 
From: Tom
Sent: Friday, October 27, 2017 3:15 PM
To: Elecraft
Subject: [Elecraft] Did I fry my KXPA100?

HI,

I seem to be having troubles with my KXPA100.
There is no power output as indicated on the power out display on the amp 
either into an antenna or dummy load.  The amp’s TX light does go on.
If I open the KXPA utility and look at the Operate section, Input power 
always stays at 0, even though the KX3 shows power output near 100W on it’s 
power display except when you press the Tune button.  Then it shows 10W

Sending the output of the KX3 to a dummy load shows that the amp is getting 
10W power ..
If I transmit on the KX3 into the KXPA100 with 10W, the Operate section in 
the KPXA utility shows the following:

Input Power = 0.0
Drain Current = 4-8A (using voice....)
Supply Voltage 13.4V
Dissipated power = 50-90W

Forward power = 0
reflected power =0
Last SWR= 1.2

This is into a dummy load or antenna
Holding down the tune button the KX3 shows Input power at 10.0 but of course 
the amp then goes into bypass.
Anyone have any ideas?
Thanks, Tom


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