On Aug 20, 6:36 am, Kris Tilford <[email protected]> wrote: > On Aug 19, 2010, at 10:00 PM, Marty Levine wrote: > > > The Quicksilver boots up with the original video card but the > > machine will not even power up with the 9200 card installed.
> I'm thinking the problem with the Radeon 9200 is the old pins 3 & 11 > issue. The 9200 is normally an AGPx8 card, and needs tape or > modification to disable pins 3 & 11. > You can read about the 9200 here: > <http://lowendmac.com/video/agp/radeon-9200.html> > Here is the pins 3 & 11 info here: > <http://themacelite.wikidot.com/pins-3-and-11> > I would agree with this, the AGP slot in any Mac that originally supported Apple display port (the one that powers the monitor) used pin 3 & 11 as power on so that the monitor could power up the Mac, at the time (AGP 1x / 2x) the pins had not been defined so Apple decided to use them in a non-standard way. However when AGP 8x came out the pins were used. What this means is that any non Display Port AGP card will probably ground pins 3 & 11, the motherboard then thinks the power button is held down and won't power on. The easy way round this is to just cut the traces to these pins (just ensure you have the right ones BEFORE you cut !) as the tape method is fiddly and needs re-doing almost every time you remove the card. Ben. -- 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
