On Fri, 18 Mar 2005, Ashley Carder wrote: > > What does ECO mean? Engineering Change Order - used to make a modification to a device that's already in production.... cut and lift U20/pin 6, run a wire from R51 to U33/pin4, add a 100K 1/8W resistor from the junction of Q7/E to the + side of C141... stuff like that. Cheers John