733mhz in G4 QS 2002

[MacJunky]

I put a 400MHz GBE CPU into my DA, at first I changed the multiplier setting under the presumption that I needed to, but performance was really low so I bumped it up a couple times back to what it was originally and then it was fine. The mobo seemed to revert to 100MHz when it was installed so changing the resistors was underclocking it.

I will see if I can find screenies.

What ASP tells you is generally a lie when it comes to dinking around with CPUs.

*Edit

Actually, it looks like I was using my 450 Sawtooth CPU that I ran at 500, not the 400 GBE CPU around here.

Anyway:

Now, a little info, the lower speed benches are marked, as an example, DA600.450. This means DA is the system, ASP reports 600MHz and Gauge Pro reports 450MHz. I added the beige G3 result that macbench came with for comparison.

I suppose it is possible that the QS2002 can not take Sawtooth CPUs, but the DA and QS boards are so similar I would be surprised if that changed. I never tried it when I had a QS2002.

 

[mcdermd]

Did you change the resistor settings when trying the Sawtooth CPU? If not then you'd be trying to run the400mhz processor at 533mhz which it likely won't do

Ah, quite right! I had forgotten! IIRC, there is also an issue with the mounting screws, isn't there?

 

[theos911]

Well, the guy I bought the psu from is sure it is working. He is sending me a new logicboard for shipping to help see if we can't get it working. :quadra:

I'm betting on the old psu fried my first new lb. Old psu ain't getting anywhere near this new lb. }

It's one thing to find mac enthusiasts here, it is another to find them on eBay.

 

[theos911]

Second new lb arrived today. Now hopefully, at least one of my cpus is good.

 

[theos911]

I popped in the new lb, and the 733 mhz cpu. It actually sustained the power button light and was working.(No chime, but that was b/c of no ram) I grabbed a fresh RAM chip, popped it in and DEATH! It is now back to its old symptoms(and this is with a confirmed working psu AND lb). Is it possible a bad RAM stick killed the lb?

Assuming the RAM stick didn't kill the board(There was no smoke, no pop, no spark, no nothing...) and I merely got lucky and got one boot out of a dead cpu/front analog board. I am looking for a (third)new cpu and a front analog board. If anyone has these handy, let me know. Though, I think it is the cpu based on the symptoms: With no cpu it behaves as it should, and with the cpu it shows the signs of a bad cpu minus the power light staying on.

 

[theos911]

The new lb that arrived appears to be that of an original QS. I say this because it was stated by the seller that it has the 128gb HDD limitation. Would a Dual 1 ghz cpu work on this lb? I intend to get a 733 off of eBay for 8$, but am wondering if it will be possible to take it back up to where it was.

 

[khmann]

any 466/533/733/800/933/1ghz... anything with a 133mhz FSB from a DA, or QS should work without issue. With no ram installed, you should get 3 beeps at power on. concur with the other posters statement of what happens when CPU not in - maybe it's not seated well? Good luck... : )

 

[theos911]

That is odd, the one time it did boot on what I believe is a bad cpu, it didn't beep at all. Also, good to know the dual 1ghz will work.

 

[bibilit]

Just kidding, in last resort, try this :

http://www.journaldulapin.com/2011/01/26/un-powermac-g4-qui-donne-lheure/

 

[theos911]

Just kidding, in last resort, try this :
http://www.journaldulapin.com/2011/01/2 ... ne-lheure/

I am so close to that point, you can't imagine!

 

[bibilit]

Joke appart,

Sounds like a PSU issue to me (but can go wrong)

Can you have it tested with a voltmeter ?

As the LB requires a trickle power of +25V to boot ...maybe this is missing.

this is a useful link:

http://www.xlr8yourmac.com/tips/MDD_ps_mods/MDD_PS_Mods.html

Also, are you sure the CPU is fully seated in the socket.

 

[theos911]

I got a new PSU a while ago, the guy is a mac guy and confirmed it working.

 

[theos911]

Got my new CPU today.

It still doesn't work.

This is with a confirmed working PSU, LB, and now CPU.

... :scrambled:

I ordered a new front switch for 15$ on eBay. :-/

 

[MacJunky]

You can manually jump the pins, no need for an actual switch.

 

[theos911]

You can manually jump the pins, no need for an actual switch.

Too late )

 

[theos911]

New switch arrived.

Still doesn't work...

Is there even anything else left that could be broken?

 

[MacJunky]

You can pull it all out of the case and try on a wood board or something.

like this: http://poopr.org/images/uieyoazu70zugrg7q8ll.jpg