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Neil, Needing to use the Reset switch at power up indicates that your power supply may have a slightly longer ramp-up time than others. I expect that was my problem until I discarded that old Apple power supply. --John On 07/22/2011 10:22 PM, nbreeden wrote: Yes - I have to manually reset it after power up. Now that I have conformation C1 is a decoupling cap I'll look at increasing C3, I had to do the same on my N8VEM. Seeing C1 in the reset circuit and not in the list of decoupling caps lead to my confusion. Note that I'm using a 5V 3AMP switcher for power using the Bornier4 connector (I didn't install the 7805). -Neil On Jul 22, 3:20 pm, John Coffman <jo...@gmail.com> wrote:Neil, Are you having any trouble with the power on RESET? If a longer time constant is needed, C3 could be increased from 10uf to 22uf, 33uf, or even 47uf. It is easy to try with an added cap in parallel. I recall I had some trouble on the SBC v1, which had a much shorter RC time constant; and the solution was to add another cap. across what corresponds with C3 on the N8. (The ultimate problem was my recycled Apple II power supply.) --John |