• Updated 2023-07-12: Hello, Guest! Welcome back, and be sure to check out this follow-up post about our outage a week or so ago.

My MDD has no* network connection after modding it from 133 to 167MHz Bus... I think I messed up a bit.

PlaceboKoyote

Active member
Sooo...

yesterday i removed the two resistors on the cpu and mainboard that limited the Bus speed on my 867 dual MDD i got for free. I was surprised that it all went well even though i am bad at soldering and used a way too large solder iron.
I even found some faster DDR1 memory in my broken iMac G5 (mainboard, caps, video chip, overheated twice... total hot mess that system, i am sorry) and now have fancy heatspreaders in neon cyan metallic lol

I put everything together, it all seemed to work, CPUs are both at 1080MHz and BUS at 167... except for memory since i forgot the memory limit (had 1gig of memory when i got it, but only 256 of it was PC2700, the rest 2100... i installed my 2gig G.Skill gamingX kit and the 256mb PC2700 and got a messed up memory map... i shut the mac down afterwards and now only have the 2 1 gig modules in it... hope that didn't mess stuff up)

But my network connection is somehow broken. Like system time couldn't be set automatically after boot, this website here would not load but the german apple website worked. I thought it was because of the system clock being wrong (once had a browser game i played in like 2013 on my windows 7 laptop and for half an hour the game wouldn't let me in until i found out the wrong system time was the issue...).
But after setting it... no websites work.
The OS is fine, currently using the exact same harddrive in my AGP G4 to write this post, the network switch is working fine, testd it with my gaming machine and using it rn...

In the system settings, it lists a bit of stuff and can create an own IP address and everything, but the ethernet connection is yellow and doesn't work.

BUT when loading the german apple website like hundreds of times.... once in a while it does load. Not reloading it but clicking the bookmark in InterwebPPC. So.... it technically is connected to the internet but can't use it. Even tried the modem daughterboard from a broken sawtooth... don't know if that even could've helped anything.

So... did i break sth on the mainboard? potentially damaged some traces? Any other ideas why the MDD can't go online?

Maybe a workaround if i damaged the mainboard could be a pci Ethernet card.... which ones would work on the MDD?

Yes, i always could put the hdd in the sawtooth, download the software i want, put it back in the MDD and use it... but come on that's silly and i like stuff to work.

Thank yall in advance


(I also noticed some weird modifications on the board itself and the resistors i desoldered were not factory original but somebody had soldered them back on by hand sometime ago. There are weird jumper cables and diodes on the board. It came from some software company that sold off/gave away old inventory like mac pros for 60€... even 4.1s
So if somebody has an idea what they could've done with the board... let me know)
 

Byrd

Well-known member
Um - double check all your work, strip it down to the absolute basics (known good ram, just graphics card, fresh OS install) and retest.

Overclocking the Dual 867 to ?1080Mhz is a decent overclock; 200+MHz on dual cores might not be fully stable even though you can boot to the OS; system issues like random instability and data loss can occur. Same goes with upping the bus speed on the motherboard; it might be more appropriate to overclock the CPU multiplier to ~ 1Ghz and leave the bus alone.

Post up pics if unsure!
 

PlaceboKoyote

Active member
Um - double check all your work, strip it down to the absolute basics (known good ram, just graphics card, fresh OS install) and retest.

Overclocking the Dual 867 to ?1080Mhz is a decent overclock; 200+MHz on dual cores might not be fully stable even though you can boot to the OS; system issues like random instability and data loss can occur. Same goes with upping the bus speed on the motherboard; it might be more appropriate to overclock the CPU multiplier to ~ 1Ghz and leave the bus alone.

Post up pics if unsure!

I wasn't able to find the jumper settings for the 133MHz Bus...

No but Seriously, the work on the CPU card seems fine, i admit it looks a bit dodgy on the Mainboard sadly...
The System itself works absolutely stable though, no other issue besides network connections.

I would say i probably damaged the Board somehow, maybe it just didn't like getting pulled out and bemd around amd handeld after 20 years in its place... Maybe i damaged some capacitors.

Or i should stop sharing one drive between multiple G4s. Because os9 isnt bootable anymore for example since i used the drive in the mdd.
Freshly installing the OS also is a bit of an issue because of that one shared drive.
 

s_pupp

Well-known member
Oddly enough, I have a MDD 1.25GHz with flakey networking that works normally when I put in a dual 1.25GHz cpu. I don’t know enough about the MDD to know how a faulty cpu would affect networking, but it would be interesting to know what happens with a different cpu.
 
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