Get a voltmeter, check the clock battery. some systems will tolerate lower voltages in old battery -- I had some 3v camera batteries that would work in some macs and not others. Always good to check even "new" batteries.
After that check the power supply connections. that would be while it is all hooked up and booting, as are you getting both voltages, is anything dropping. Try a video card in the pci slot if you like. A decent video card would help the computer anyway quite a bit depending on the card. On Mar 20, 6:28 pm, Bruce - in Orlando <[email protected]> wrote: > At this point, I have done the following: > > 1. Swapped the 6500 motherboard out with an original 580-630 series > board, which I have a couple of laying around. Got chimes and the > video came on - thus proving that the problem is somewhere on the > motherboard. Of course the 580-630 series board did not boot > correctly, since those boards can't run OS 9.1, which is what I have > installed. But the viseo did come on. > > 2. Removed all the toys (i.e. the G3 accelerator card and the USB/ > Firewire combo card), but left all RAM in place. Also zapped the > PRAM. Got chimes but no video. > > 3. Removed each of the two RAM sticks separately and tried again each > time. Still no luck. > > 4. Since the 580-630 series board had worked "correctly," I assumed > that its PRAM battery was okay, and plugged that one into the 6500 > board. Still no luck. > > Having gone thru this sequence, I am pretty much left to conclude that > the problem is on the 6500 motherboard, not on any of the RAM or other > cards. Can anybody think of anything else before I turn to the LEM > swap list for a new motherboard? > > Bruce - in Orlando -- ----- You received this message because you are a member of the Vintage Macs group. The list FAQ is at http://lowendmac.com/lists/vintagemacs.shtml and our netiquette guide is at http://www.lowendmac.com/lists/netiquette.shtml To post to this group, send email to [email protected] To leave this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/vintage-macs Support for older Macs: http://lowendmac.com/services/
