In earlier posts regarding the V2 board, there were some issues noted of bad solder joints and excess lead lengths on the crystal. If you have a good magnifying lens, take a close look at both sides of the board for possilbe issues. i.e. solder bridges, cold solder joints, etc.
I have several pre-V2 boards but none of the V2, so duplicating the problem is not practical. However, there can very easily be operational tolerance differences just due to different components on the new board. i.e. An older board may work at 9.3V but a new one may fail at the same voltage. But then, one can have the same problem between boards of the same series since none of the parts on the board are "ideal". Operational tolerances of the parts vary between 1% and 20% or more. Try a 12V supply and monitor the current with an analog meter if you can. At the moment I cannot put my hands on what the current draw should be, but I am sure it will not be over 100 ma. However, with the analog meter, in the short term you should not see a gross change or serious spikes in current. A digital meter will not show rapid changes and some analog meters may be dampened too much to see rapid changes, but..... Larry K7YBZ
