On May 26, 2016, at 7:48 PM, parallel_imp <hillsid...@gmail.com> wrote: > > As I was trying different PCI cards, it started to not respond to the power > button.
I assume you’re saying “I think I shorted out the power supply & VRM” but did you confirm either the power supply or VRM was bad? > There were the correct power supply and VRM on eBay from my own city, so I > got and installed them. G3 still would not boot from power button, but it > would from keyboard. > I removed the power button and swapped it for one from a G3 MT parts machine, > and still no boot from the button. However, now the machine when shut down > immediately reboots, whether with no button, original button or the MT > button. I have to turn off the power strip to shut down, and it boots as soon > as power strip is turned on. Thoughts? Did I fry a circuit on the motherboard? Beige G3 are super finicky. The PRAM & NVRAM do NOT necessarily reset correctly using keyboard commands. The easy solution would normally be to remove the PRAM battery and press the CUDA reset button, BUT the beige has capacitors in the power supply & VRM that leak residual power back into the motherboard so that even with the PRAM battery & CUDA reset pushed the PRAM/NVRAM do NOT reset. The ONLY way to reset the beige back to original PRAM/NVRAM settings is to remove the PRAM battery, and then also removed the power supply cables to the motherboard, pull the VRM, THEN press the CUDA reset button. If it still doesn’t work, let it sit 15 minutes with no PRAM battery or cables to the motherboard, press the CUDA again and reassemble. I know this sounds kooky, like overkill, but I have a lot of experience with Beige G3’s and I’ve had many with crazy boot issues that “made no sense” which were all solved by disconnecting all the power from the motherboard and reseting with the CUDA reset button. -- -- 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 g3-5-list@googlegroups.com For more options, visit this group at http://groups.google.com/group/g3-5-list --- You received this message because you are subscribed to the Google Groups "G-Group" group. To unsubscribe from this group and stop receiving emails from it, send an email to g3-5-list+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
