[Elecraft] K2 KIO2 Hi Current Draw

[John [K7SVV]]

Clark,
        If you have already plugged an RS-232 cable into the KIO2 make sure 
it was the modified Elecraft cable and not a standard cable that may have 
been laying around the shack.  Doing this will damage the KIO2 but I don't 
know if it will cause it to overheat.

John    [K7SVV]

----- Original Message ----- 
From: "Clark Macaulay" <clarkmacaulay at yahoo.com>
To: <elecraft at mailman.qth.net>
Sent: Tuesday, March 25, 2008 9:47 AM
Subject: [Elecraft] K2 KIO2 Hi Current Draw


Have looked for my problem by searching the archives and haven't found any 
answers.  The KIO2 is the last option I'm installing in my K2 bought at 
Dayton LAST year (I like to stretch out the building process).  Last night, 
in the initial checkout, when I touched the KIO2 board to hold it for 
measuring voltage at pin 8 of U1, it was hot to the touch.  I quickly 
checked current draw test and it failed.

  All components are in their right place and I've checked for solder 
bridges/loose wires and found none.  Is it possible that U1 has failed and 
has an internal short?  I've stared at the circuit and can't see what else 
could be the problem.

  Any ideas out there?

  73 de Clark ke4rq
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