[Elecraft] My K2 died.

[w3att]

K2 S/N 757 F/W 2.03d

I was having some trouble with low power output through the K2 auto tuner..
getting only about 1 watt or so into a dummy load.

I had the cover off looking for any troubles. I disconnected the auto tuner
and connected the dummy load to the ant out on the k2 and had full power out
from there.

While sliding the radio so that I could see inside a little better, the rig
triggered tx and made a few dahs, go t real loud, then I heard what sounded
like something short in the audio and smelled an odd odor.. this all
happened within a second or two and it was too late.

The entire radio shut down and I have no display, no relays click when I
power on, no s meter etc.

Checking inside, I do have power all through the power supply.. 8v and 5v to
the MCU.. there, however, is where things go awry.

No Tx or Rx. No power on pin 3, 6, 13, 19, and all other pins that should
show 5v are either dead or showing only .1v or .2v

I'm thinking the MCU? but I really can't figure out what caused it since
nothing was touching bare wire when the catastrophe occured.

Other symptoms include no voltage on U7 pins 1 and 2; U8 no voltage on pin
1, 9, or 11.

I sure hope I can fix this.  This is my favorite rig.

Brian W3ATT





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