DK cocktail mode

jpopson

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I have a 2 board DK set that is stuck in cocktail mode. It will not switch out of it. The dip switch bank seems to have no effect on the game. Any ideas??
 
Well, take a meter to the dip switch itself - is it working (it's not unheard of for these to go back). Next, check if the change registers at whatever chip it's wired to (looking for bad traces).

There's going to be a resistor to +5 and another to GND somewhere along that circuit. Verify that they are both good.

With the system powered up, look at the pin that the dip switch feeds with a voltmeter. Check the voltage with the switch both open and closed. If it changes (which it should) from 0-5 (or 5-0), then the problem is likely the chip itself. If it doesn't change, then the problem is probably the resistors (to +5 or GND).
 
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