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Hello. It's been 13 years since this post, and it's pretty much forgotten, but since there's less and less information on the internet these days, I'll explain how I repaired an LC with the same problem. In my case, there was no sound at all. Upon inspection, I noticed that C108 had 12V, but it...

I ran more tests, and the PSU is dead. It's not even getting +5VSB voltage. I replaced the optocouplers, I replaced the 7805, and nothing changed. I remembered I had an old micro-ATX PSU in a drawer, and this weekend I adapted it inside the LC630's PSU, and it's back to life. I would have...

Well, I haven't had any luck. This afternoon I recapped the PSU and it's still the same. The capacitors looked great, no acid leaking onto the PCB, it was in very good condition. I also checked the fuse, the optocouplers, and the diode bridge, and everything is fine, but it's not showing any...

Hello. I have an LC630 that was working fine, with the motherboard recapped, and yesterday it froze. I unplugged it and plugged it back in, and now it doesn't respond to the power button either on the tower or the keyboard. Could it be because the PSU is bad? Can the failure be that abrupt?

Hello, I've done some testing with another USB 2.0 card I found with an NEC chip, and another 8139 network card. This time, with the patcher installed, it seems to power the USB devices, and Apple System Profiler recognizes the USB card (not the 2.0 portion), but it doesn't recognize any...

Thank you so much for this information. I'm trying to gather some more cards and I'll try again; what's happening with my 6500 is very strange. Happy New Year!

Great!!

I've finally finished the recap and it's still the same, nothing has improved. I can't imagine what the problem could be. Even the Sonnet Tango isn't working.

Hi, after reading your reply, I decided to try it. First, I recapped the PSU. Although the capacitors weren't showing any problems with the checker, I replaced them. Nothing changed. Then I replaced some capacitors near the PCI slot (I didn't have more time today) and it's still the same. I...

Hello. I've done some more testing. First, I added a battery because without it, every time I unplug it, the PRAM is erased and the patch is lost. I tried three PCI cards that I have, which work perfectly in my G3/G4 processors. None of them worked in the 6500, and the Sonnet Tango froze on...

I've tried both OS 8.6 and OS 9.1 without the Ethernet card, and I get the same result: there's no power to the card. The photo shows the PCI device information (the Ethernet card was still there; it has an 8139 chip, but it seems to be recognized as 8129, which might explain why it's not working).

Thanks for this information. I'll follow your thread to see if we can find a solution. I can't use OSX; the highest version I can use is 9.1. I was considering the possibility of a hardware problem with the PCI riser, but if it works under OSX in your case, then it can't be that. I also tried...

Thanks, I already installed these drivers, as I mentioned in my first post, and it's not working.I've downloaded from Macintosh Garden many times, but I haven't been able to access it for a few days now, and I don't know why. I haven't done anything wrong :).I'm in Spain.

Hello. I just tried it and nothing has changed. The USB card still isn't working; I don't even have power on it, and neither the mouse nor the keyboard lights up. Apple System Profiler shows the same information as before. I ran the patcher. The first time, it said there were 0 KB in that part...

Yes, I understood that. I meant having a working battery to run the patcher. I gather that if I run the script and restart, without powering off and on again, I can do it even if the battery is dead.

Thank you so much! I'll try it this afternoon. My battery isn't working anymore. If I don't unplug it, if I run the script and restart, will it work? Otherwise, I'll have to provide 4.5V somehow temporarily where the battery connects.

Hello. A few days ago I received a Power Mac 6500/250 that works fine. I've installed Mac OS 7.6.1, 8.6, and 9.1 on different partitions. I wanted to add USB and Ethernet support, so I added an NEC USB 2.0 card that I usually use in my G3 and G4, and a Realtek RTL8139B Ethernet card that I had...

Okay, you win, yours is better, but try putting it in an iMac tray :P I tried putting in two 128MB DIMMs (actually two 250MB ones, with only half of each recognized), and it worked. It seems the limit is 256MB. And the OS9 system profiler doesn't show the speed correctly.

Hi, good suggestion. I just tested it by moving the same module from the bottom slot to the top slot, and it works too. Now I'm wondering if when I tried 128+128, both were 100MHz. I can look for two 100MHz ones this afternoon; I don't have time right now. Thanks for your suggestions! P.s. my...