> -----Original Message----- > From: tclug-list-admin at mn-linux.org > [mailto:tclug-list-admin at mn-linux.org]On Behalf Of Perry Hoekstra > Can anybody with more knowledge > about power supplies say whether this is a concern? Yes: the issue isn't power supply "bad" as much as its setting. That 4.60 volts is worrisome because very many "commercial grade" ICs are only specified to run from 4.75 to 5.25 volts, a +/- 5% tolerance. Some do better, but some technologies do not, and one usually must pay extra to get parts for "industrial grade" or "mil spec" that have the =/- 10% tolerance of 4.5 to 5.5 operating range. The 12 volt things are less critical. I'm not sure what tolerances the low voltages may have. This can be a confusing thing because the accuracy tolerance on many meters used to read power supplies is not good enough to tell whether the +5 is actually in range. Might be a good idea to just remove and reseat the power connectors a few times to rub off the oxides that may form there. That might be enough to improve things. Be careful: I doubt that your power supply has an adjustment to correct even a minor deviation and an incorrect setting might fry something. Try removing any excess cards to lighten the load as a test. The power supply isn't "obviously bad", however. Note: it's worrisome but not an obvious problem unless a good DVM shows that 5 volts is too low at various points on the board and a borrowed supply fixes all. I think a "soft failure" like this is uncommon. Good luck! Chuck