cdb wrote: > Schematic attached. Quality is as good as it gets from IGT themselves. As you say, the quality sucks. At first glance it looks like abuse of transistors, and that both on could be a stable state. A second more careful look requires a better schematic that isn't as much of a pain to read. ******************************************************************** Embed Inc, Littleton Massachusetts, http://www.embedinc.com/products (978) 742-9014. Gold level PIC consultants since 2000. --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .