[Elecraft] K2 DOA at second power up test

[Don Wilhelm]

John,

Either remove T3 or remove the PA transistors and see if it comes back 
to life.
If it does, then replace the PA transistors.  A dropped wire that 
happens to short between the collector and the base of the PA 
transistors will take them out in a microsecond!

73,
Don W3FPR

On 11/7/2011 4:54 PM, ke4d wrote:
> Ok, I've done a lot of dumb things in 37 years of amateur radio but when
> constructing my second K2 a few weeks ago, I dropped a piece of component
> wire on the RF board while doing the second power up test on the receiver.
> Bam, no power at all, no lights, no relays nada.  I thought I blew D10 on
> the RF board but Elecraft tells me it leaks anyway. I changed it
> nonetheless, no joy. I get 12 volts on the main bus on the RF board until I
> hit the power switch. Then the voltage drops to 2.5 or so.  I lifted the 5
> and 8 volt regulator output leads, still low voltage there.  Changed them
> also but still no joy. I'm at a loss where to look next. I cannot find
> anything that warms up, looks bad, measures the wrong resistance, just low
> voltage.  Low enough that the relays don't activate and the display is a
> dismal green with no power to it. Any suggestions other than buying another
> Icom or Kenwood?  I could say the rig is KOA instead of DOA since I killed
> it!
>
> John KE4D
>
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