centipede acting odd

deadmeat13

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sometimes (not all the time though) when i fire it up and start a game there isn't any sound, and there are no mushrooms on the screen until i shoot the centipede. and on occasion, i'll be playing a game and it will just reset and go back to the attract screen.

any ideas?
thanks!
mike
 
If the problem is on the board, then a bad Pokey would be my first guess. Although the resetting could be a bad address decoder.

Check all your voltages on the board. They should be within 10%.
 
http://en.wikipedia.org/wiki/POKEY

It's a 40 pin IC. I think its located at C-3 IIRC.. I think the processor is at C-2. I may have that backwards but in any case, POKEYs visually typically have a circle on one end and a square on the other (looks like theyre pressed into the top of the chip).. hope that helps

You are correct. :cool: Remove, clean the leads, and reseat. Make sure you put them in the same orientation as they came out!
 
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