> [Presses start button which then glows. > "Bong" (Power On Self-Test) sounded. > Message appears on monitor to restart computer. > On subsequent attempts, start button extinguishes > when released. POST "bong" not sounding. > Red light on motherboard remains lit.]
Had the same problem. Replaced the Front Panel Board (FPB), aka power switch, *and* the Power Supply. Didn't help. Motherboard looked like new -- no burn marks, no swollen capacitors, not visible cracked traces. The red LED on the motherboard was firing. IIRC the HDs did not spin up either. Ended up having to replace both the motherboard and the CPU as neither tested good. When one went it took the other along with it, I guess. I don't know how far POST goes before it gives up but the power light going out on release is serious. Perhaps bad RAM or a bad RAM socket could hang the POST. You might try starting with just one stick of RAM and try that individual stick in each socket. Check each stick this way. Doubt that's it though. :-( Unless you have a source for very inexpensive replacements, your money might be better spent on an Intel Mac inasmuch as Apple and third parties will soon drop all support on PPCs. If you go the repair route be sure you get the right mobo. Check for exact Apple part numbers here: http://tinyurl.com/2luemx. It might be wise to push the PMU (power management unit) button when you mate a PCU to an unacquainted mobo before startup. -- You received this message because you are a member of G-Group, a group for those using G3, G4, and G5 desktop Macs - with a particular focus on Power Macs. The list FAQ is at http://lowendmac.com/lists/g-list.shtml and our netiquette guide is at http://www.lowendmac.com/lists/netiquette.shtml To post to this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/g3-5-list
