[alari]

Hello, i have a Powermac 6100 with a AV Card and a Sonnett 250mhz G3 upgrade.
The machine starts up and the hard disk and cdrom make some noise for a while and then it stays like that, the keyboard doesn't respond to any combinations and the monitor stays black with no signal, i also cant hear the "boing sound" when starting the machine up, i tried taking out the battery for 15 minutes or so, but it didn 't help.
Any ideas what could be wrong ?

Alari

[Bwa]

The 6100 will not display anything if the battery is dead. Try a new battery.

[alari]

Where can i get one ? local Apple store maybe ?

[Bwa]

Maybe. I'm not sure what you have available in your area, but here most electronics stores with a selection of batteries sell them. They're about US $12 here. Take the old battery with you to get an exact match. Good luck.

[alari]

I got the battery, replaced it, but no luck.I push the power button on the machine, the lights on the keyboard flash once, no boing, the disk drives spin a little and it stays like that.
The machine wont start when i push the power button in the corner of the keyboard, it only start when i push the power button on the computer.
Im out of ideas, has anyone seen something like this or has any suggestions ?

[Chito]

I'm only guessing here....it's been awhile since I've played with a 6100. There should be a CUDA reset switch on the motherboard. Press it once and see if the mac will start. While you're inside check and see that everything is seated properly....ram, processor upgrade card...that kind of thing. Good luck.
One more thought...do you still have the original processor? Maybe your upgrade card took a poo......

[Bwa]

The 6100 didn't support soft power on (or power off), if I'm recalling correctly. The use of the front power button under the floppy drive is normal.

You might try zapping the PRAM for luck--Hold down Command, Option, P, and R immediately after power-up.

I may be mistaken but: The upgrade card sits in the PDS slot--as Chito notes, you might try removing it. The original processor should be soldered on the motherboard.

Also, you might try removing any extra RAM that's installed. The 6100 had 8 MB soldered and two SIMM sockets which must be installed in matching pairs. However, in the 6100 you should get a very scary car crash sound if the RAM is bad.

[alari]

Removing the ram or zapping the pram didn't help, i have already tried that.I tried to find the CUDA switch, but didn't, where is it located on the motherboard ?

[Chito]

Ok...I think I was wrong about a CUDA switch. I'm going to copy and paste the instructions from the 6100 manual for you and give you the link so you can go and get the manual online. Get it here http://www.whoopis.com/computer_repa...100_Series.pdf

Here are the instructions just in case.
Before you begin, remove
the following:
• Top housing
• Power cord
Note:
Whenever you have a unit that fails to power up, follow this procedure to
reset the logic board before replacing any modules.
1 Unplug the computer first.
2 Using a small flat-blade screwdriver, pry open the latch at the end of the
battery holder and lift off the cover.
3 Grasp the battery and remove it from the holder.
4 Press the power on button.
5 Disconnect the power supply cable from the logic board. Wait 5–10
minutes and then
• Replace the battery
• Reconnect the power supply cable
• Reassemble the computer
Replacement Note:
Make sure the battery is facing in the correct direction.
Note:
This procedure resets PRAM. Be sure to check the computer’s
time/date and other system parameter settings.

[Chito]

if all of that fails....BWA is right. The original CPU is soldered onto the motherboard. Try removing the processor upgrade and see if it'll start.

[alari]

I removed the G3 card, removed the battery and the power supply, still no luck, it starts up with no sound and just stays like that.It worked a few months ago, i was looking dor the g3 card and didn't power it on in the mean-time, when i got the card, it didn't boot anymore, looks like i just wasted a lot of money for nothin.

[Bwa]

I wonder if you have a bad power supply. When you say the disks 'spin a little', I wonder what you mean...do they flutter up and then stop, or does the hard disk actually spin up?