K2 CW dot problem

[Dave G3VGR-2]

My K2 has developed a strange problem when using the keyer on CW. If I
press and hold  the paddle for dashes, it sends a string of dashes
correctly. If I press and hold the paddle for dots, it will send only
one dot, then on releasing the paddle, I hear 2 lower frequency dits and
the rig switches from the current VFO to the other VFO.

I removed the control board & checked the tracks from P3  pins 17&18 to
the MCU, no shorts, opens or solder bridges.
Looking at the schematic,  it all looks very simple, just grounding pins
29 & 30 of the MCU to send code.  Can anyone suggest what I should try next?
--
73, Dave G3VGR
K2 #4783

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[Jim Younce]

Dave:

You have the keyer set to the automatic detect mode and it act like a
straight key when you hold both paddles closed.  Tap the menu key and rotate
the vfo knob until you see "inp". Press and hold the menu key to edit and
then tap the display key this will toggle the "adet (Auto Detect) on and off
tap the display key until it says off and then tap the menu key twice to get
out of the menu.  You have the auto detect turned on and when it sees both
the dit and dah contacts closed it changes the K2 keyer to the handkey mode.

73
Jim Younce K4ZM
K2  SN: 18


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