4066's are VERY cheap - worth a try replacing that, I would say.

Mark Z.

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"JURB6006" wrote in message
...
But I think the 4066 is the chip
you are trying to refer to.

Mike


I was doing this from memory, I haven't worked on one for a while. If it
uses
4066s then the fault is probably with the micro. The 4066 is controlled by
logic levels, not a data bus. I would look for shorted clamping diodes on
those
control lines before looking for a micro. There may even be driver
transistors
which should be checked.

JURB