[Elecraft] K3 losing RF

[Paul Ormandy ZL4PW]

Hi all,

My K3 has developed a problem...

Power output is down to 70W and the LCD back-light flickers on tx. The "Low Voltage" message flicked 
up briefly once.

I suspect a DC power problem but so saying, the voltage at the rig is 13.9V on transmit at 70W and 
the rig is drawing 13A. The problem seems worse on the 6mb.

If I reduce the output RF control to around 60W, there is no perceptible LCD flickering.

I will obtain another 20A power supply tomorrow and see if the problem persists.

In the mean time, (apart from running low power), can anyone suggest what I should start looking for 
internally?

Kind regards,

Paul


-- 
Paul Ormandy ZL4PW ZM4M
www.radiodx.com
www.zl4pw.orcon.net.nz