I opened my seldom running PPC 7500 for a battery change. I kept the PPC open for 2 weeks during the time to search for that type of battery. Now I inserted a new Battery of the correct type, but my PPC doesn¥t boot anymore. After turning on power you hear the HD trying to start, the LEDs on the keyboard flickers shortly, the screen remains black - and that¥s it.
Has anybody an idea, what happened during the time of battery replacement and how to solve this problem?
Thanks for your help.
<< I opened my seldom running PPC 7500 for a battery change. I kept the PPC open for 2 weeks during the time to search for that type of battery. Now I inserted a new Battery of the correct type, but my PPC doesn¥t boot anymore. After turning on power you hear the HD trying to start, the LEDs on the keyboard flickers shortly, the screen remains black - and that¥s it.
Has anybody an idea, what happened during the time of battery replacement and how to solve this problem?
Thanks for your help.
Hi- Make sure you put the battery in with the correct orientation. Press the CUDA switch on the logicboard for 3 seconds. Then try restarting.
Ron
Ron
What do you mean by "CUDA" switch - I¥m not aware of such a switch?
OSTIAANTIC wrote:
<< I opened my seldom running PPC 7500 for a battery change. I kept the PPC open for 2 weeks during the time to search for that type of battery. Now I inserted a new Battery of the correct type, but my PPC doesn¥t boot anymore. After turning on power you hear the HD trying to start, the LEDs on the keyboard flickers shortly, the screen remains black - and that¥s it.
Has anybody an idea, what happened during the time of battery replacement and how to solve this problem?
Thanks for your help.
Hi- Make sure you put the battery in with the correct orientation. Press the CUDA switch on the logicboard for 3 seconds. Then try restarting.
Ron
Ron
In article 4045F158.79CF4420@redacted.invalid, Fritz fritz@redacted.invalid wrote:
What do you mean by "CUDA" switch - I?m not aware of such a switch?
Look about an inch, perhaps less, directly to the rear of the processor
card slot, and almost exactly in line with the right (as you're looking
at the machine from the front) edge of it. You may need to actually pull
the processor card to be able to spot it the first time you go hunting
for it. You should see a roughly 1/4 inch square gizmo. Usually it's
black plastic, but may be metallic/silver. On top of this device you'll
see either a red (most common), black (almost as common as red), or
(rarely - I've only personally seen one) silver circle approximately 1/8
inch in diameter. That's the CUDA reset switch/button. Press and hold it
for 5-10 seconds, and you've just performed a "CUDA Reset". This action
is particularly important when swapping processor cards, but pretty much
anything other than cable ends being plugged into or removed from the
motherboard is sufficient cause to go ahead and hit it before trying to
run the rig again.
OSTIAANTIC wrote:
<< I opened my seldom running PPC 7500 for a battery change. I kept the PPC open for 2 weeks during the time to search for that type of battery. Now I inserted a new Battery of the correct type, but my PPC doesn?t boot anymore. After turning on power you hear the HD trying to start, the LEDs on the keyboard flickers shortly, the screen remains black - and that?s it.
Has anybody an idea, what happened during the time of battery replacement and how to solve this problem?
Thanks for your help.
Hi- Make sure you put the battery in with the correct orientation. Press the CUDA switch on the logicboard for 3 seconds. Then try restarting.
Ron
Ron
There is a small (and I mean small) rubber button, either red or black on the logic board. I think it's somewhere near the processor on the 7500. The processor daughtercard may block your view of it so look carefully on the motherboard at the base of the processor. The CUDA button is a reset button that should be pressed whenever you add something to the logicboard. You may need to use a wooden stick to reach it if it's hidden behind the processor. I use a chopstick for this. Many folks have reported the same problems with startup after changing the battery if they neglect to press the CUDA switch.
Ron
<< What do you mean by "CUDA" switch - I¥m not aware of such a switch?
OSTIAANTIC wrote:
<< I opened my seldom running PPC 7500 for a battery change. I kept the PPC open for 2 weeks during the time to search for that type of battery. Now I inserted a new Battery of the correct type, but my PPC doesn¥t boot anymore. After turning on power you hear the HD trying to start, the LEDs on the keyboard flickers shortly, the screen remains black - and that¥s it.
Has anybody an idea, what happened during the time of battery replacement and how to solve this problem?
Thanks for your help.
Hi- Make sure you put the battery in with the correct orientation. Press the CUDA switch on the logicboard for 3 seconds. Then try restarting.
Ron
Ron
"Fritz" fritz@redacted.invalid wrote in message news:4045F158.79CF4420@redacted.invalid
What do you mean by "CUDA" switch - I¥m not aware of such a switch?
Some call it the PRAM reset button... Similar to the CMOS battery jumper on a PC.
If you've hit the right button, you'll notice that your time is out of whack... at least that's what it does on my PowerMac.
In article rwq1c.677350$X%5.380931@redacted.invalid, "Noozer" postmaster@redacted.invalid wrote:
"Fritz" fritz@redacted.invalid wrote in message news:4045F158.79CF4420@redacted.invalid
What do you mean by "CUDA" switch - I?m not aware of such a switch?
Some call it the PRAM reset button... Similar to the CMOS battery jumper on a PC.
If you've hit the right button, you'll notice that your time is out of whack... at least that's what it does on my PowerMac.
It'll also waste many bits of preference information that the finder (and a few other things) likes to park in the PRAM area - Almost everything that gets adjusted by the "General Controls" control panel, Mouse speed/click-rate, clock (as you mentioned, the time/date displayed, AND the format it's displayed in, or whether it's displayed at all), possibly desktop pictures/patterns depending on OS version, alert sounds, Appletalk networking settings may or may not go away, and so on. Nothing that's life-or-death critical, but it definitely does more than just the easily visible "clock's weird now".
Thank you all for these really valluable hints. Meanwhile I found the real problem. After pushing the CUDA switch I managed to restart the system in a propper way, but when I slightly wobble on the G3 processor card, the system freezes immediately. I thought this is an indication for loose contacts of the card to the mainboard, but with my old 601 card the system remains stable even if I heavily wobble the card. Now I assume to have a weak solder dot on the G3 card or the card is broken somewhere. Do I need a new processorcard, or do I have a chance to get it repaired?
Cheers.
Fritz wrote:
I opened my seldom running PPC 7500 for a battery change. I kept the PPC open for 2 weeks during the time to search for that type of battery. Now I inserted a new Battery of the correct type, but my PPC doesn¥t boot anymore. After turning on power you hear the HD trying to start, the LEDs on the keyboard flickers shortly, the screen remains black - and that¥s it.
Has anybody an idea, what happened during the time of battery replacement and how to solve this problem?
Thanks for your help.
<< Thank you all for these really valluable hints. Meanwhile I found the real problem. After pushing the CUDA switch I managed to restart the system in a propper way, but when I slightly wobble on the G3 processor card, the system freezes immediately. I thought this is an indication for loose contacts of the card to the mainboard, but with my old 601 card the system remains stable even if I heavily wobble the card. Now I assume to have a weak solder dot on the G3 card or the card is broken somewhere. Do I need a new processorcard, or do I have a chance to get it repaired?
Cheers.
It may be a good idea to inspect and clean the contacts on the G3 card
with alcohol and reinstall it. Does the card have any support up top when you fold down the plastic cover and the section with the power supply? Maybe that will be enough to hold the processor still. I have no idea if it's possible to check for bad solder points on the card itself. It would probably cost as much or more to get it fixed than it would to replace the card. It shouldn't move once you get it working, as long as you don't bump into the Mac. I'd just try it for a while. It was working for you before.
hth Ron
In article 20040305101759.03037.00000696@redacted.invalid, ostiaantic@redacted.invalid (OSTIAANTIC) wrote:
<< Thank you all for these really valluable hints. Meanwhile I found the real problem. After pushing the CUDA switch I managed to restart the system in a propper way, but when I slightly wobble on the G3 processor card, the system freezes immediately. I thought this is an indication for loose contacts of the card to the mainboard, but with my old 601 card the system remains stable even if I heavily wobble the card. Now I assume to have a weak solder dot on the G3 card or the card is broken somewhere. Do I need a new processorcard, or do I have a chance to get it repaired?
Cheers.
It may be a good idea to inspect and clean the contacts on the G3 cardwith alcohol and reinstall it. Does the card have any support up top when you fold down the plastic cover and the section with the power supply? Maybe that will be enough to hold the processor still. I have no idea if it's possible to check for bad solder points on the card itself. It would probably cost as much or more to get it fixed than it would to replace the card. It shouldn't move once you get it working, as long as you don't bump into the Mac. I'd just try it for a while. It was working for you before.
hth Ron
Also, look for a crud buildup in the processor slot that might be mechanically preventing the card from being TRULY fully seated.
Yeeeeeah - that was it! after cleaning the contacts of the G3 card again very intensively the result now is as I dreamed of since days: the system is running in a stable mode again - so: problem solved.
Thank you very much for your guidance. Best regards, Fritz
Don Bruder wrote:
In article 20040305101759.03037.00000696@redacted.invalid, ostiaantic@redacted.invalid (OSTIAANTIC) wrote:
<< Thank you all for these really valluable hints. Meanwhile I found the real problem. After pushing the CUDA switch I managed to restart the system in a propper way, but when I slightly wobble on the G3 processor card, the system freezes immediately. I thought this is an indication for loose contacts of the card to the mainboard, but with my old 601 card the system remains stable even if I heavily wobble the card. Now I assume to have a weak solder dot on the G3 card or the card is broken somewhere. Do I need a new processorcard, or do I have a chance to get it repaired?
Cheers.
It may be a good idea to inspect and clean the contacts on the G3 cardwith alcohol and reinstall it. Does the card have any support up top when you fold down the plastic cover and the section with the power supply? Maybe that will be enough to hold the processor still. I have no idea if it's possible to check for bad solder points on the card itself. It would probably cost as much or more to get it fixed than it would to replace the card. It shouldn't move once you get it working, as long as you don't bump into the Mac. I'd just try it for a while. It was working for you before.
hth Ron
Also, look for a crud buildup in the processor slot that might be mechanically preventing the card from being TRULY fully seated.
-- Don Bruder - dakidd@redacted.invalid - New Email policy in effect as of Feb. 21, 2004. I respond to Email as quick as humanly possible. If you Email me and get no response, see http://www.sonic.net/~dakidd/main/contact.html Short form: I'm trashing EVERYTHING that doesn't contain a password in the subject.
In article 404C71D2.AB6E6D4C@redacted.invalid, Fritz fritz@redacted.invalid wrote:
Yeeeeeah - that was it! after cleaning the contacts of the G3 card again very intensively the result now is as I dreamed of since days: the system is running in a stable mode again - so: problem solved.
Yay! Another 7500-series machine still kickin' it after all these years :) Doncha just love that box? :)
In article g033c.7025$_3.92560@redacted.invalid, Don Bruder dakidd@redacted.invalid wrote:
In article 404C71D2.AB6E6D4C@redacted.invalid, Fritz fritz@redacted.invalid wrote:
Yeeeeeah - that was it! after cleaning the contacts of the G3 card again very intensively the result now is as I dreamed of since days: the system is running in a stable mode again - so: problem solved.
Yay! Another 7500-series machine still kickin' it after all these years :) Doncha just love that box? :)
Totally. Mine is currently running Panther. Of course, the only remaining original equipment is the motherboard, CD-ROM drive, and (never used) floppy drive.
Dan
In article dsabath-59FB55.11164408032004@redacted.invalid, "Daniel E. Sabath" dsabath@redacted.invalid wrote:
In article g033c.7025$_3.92560@redacted.invalid, Don Bruder dakidd@redacted.invalid wrote:
In article 404C71D2.AB6E6D4C@redacted.invalid, Fritz fritz@redacted.invalid wrote:
Yeeeeeah - that was it! after cleaning the contacts of the G3 card again very intensively the result now is as I dreamed of since days: the system is running in a stable mode again - so: problem solved.
Yay! Another 7500-series machine still kickin' it after all these years :) Doncha just love that box? :)
Totally. Mine is currently running Panther. Of course, the only remaining original equipment is the motherboard, CD-ROM drive, and (never used) floppy drive.
Dan
That would describe mine, 'cept I'm still "in denial" when it comes to X. One of these days, I'm gonna stumble onto a cheap copy of X on eBay or something, and I'll give it a whirl, but for now, I'm quite cheerful about sticking with 9.1.