Quentin wrote: >Or swap the resonator with one from the working boards. I swapped in a new one with the same result. >How far away is your resonator from the OSC. pins? Very close, a couple mm. >Normally when I get intermitted startups it, mostly it's noisy supply >lines. put some cap filters in. Hmm, the power is actually coming from a well-regulated handheld computer that my device plugs into, and I have plenty of bypass. Plus the other 3 boards work flawlessly plugged into the same device. >Also, are your selection of oscillator type correct in the Config >register? Yes, XT. I did notice that if I change it to HS (more drive, right?) it comes up more reliably, but still not 100% Dave Johnson