Arduino Repaired (well, sort of)

Thanks to info from Leif, KC8RWR, about the purpose of the chip that was heating up on my Arduino board (an LM386 used to determine which socket was supplying voltage for the board) I decided to try just taking the hot chip off the board.  This afternoon I fired up my reflow station and blew some 466 degree F air on that chip.  It came right off and the Arduino appears to work just fine without it.  

This was only a semi-satisfying repair.  It would have been much better if I'd really known what I was doing, and if I'd really known what was going on with that chip.  

The removed chip is up by the tip of the pen (TOO SMALL!).  The transistor and the relay that keys the transmitter are on a piece of PC board above the Arduino. 

That Arduino called CQ for me on 20 meters tonight -- Mel, K4JFF,  in Georgia responded.  Thanks Leif! And thanks again to Mark, K6HX, for the code.

Our book: "SolderSmoke -- Global Adventures in Wireless Electronics" http://soldersmoke.com/book.htmOur coffee mugs, T-Shirts, bumper stickers: http://www.cafepress.com/SolderSmokeOur Book Store: http://astore.amazon.com/contracross-20