[Elecraft] K3 Lost power

[Gary Smith]

Hi Hank,

Just removed the K3 from its harness and tested the RCA jack to see 
if it's shorted; Using the fluke it shows 500 ohms & when the probes 
are reversed, there's an infinite reading so I'm assuming the diode 
is intact.

Guess that's not this issue. Thanks for the idea though.

73,

Gary
KA1J


> Gary I had my K3 die in middle of  qso - its turned out to be the reverse 
> polarity diode that hangs from the 12v RCA jack to ground - it shorted dead 
> (not a damn thing hanging on that RCA nor had there EVER been anything on 
> it ) so that keeps  the FET from letting the radio turn on --  check DCR 
> from RCA jack to ground - just a chance --Its D35  a SMD 1N4007 or something 
> like that if I remember  -
> 
> GL what a   BUMMER -- 73 Hank
> 
> -----Original Message----- 
> From: Gary Smith
> Sent: Friday, January 23, 2015 6:49 PM
> To: elecraft at mailman.qth.net
> Subject: [Elecraft] K3 Lost power
> 
> Was in the middle of the CQ 160 contest and the K3 shut down. There
> is power to the radio but it is dead in the water.
> 
> The power supply is working fine, power getting to the rig, but
> nothing. No fuse on the chassis, any suggestions? Lousy time to lose
> the rig.
> 
> Thanks,
> 
> Gary
> KA1J
> 
> 
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