so I picked up a used g5...

Discussion in 'PowerPC Macs' started by jezzy, Jul 2, 2012.

  1. jezzy, Jul 2, 2012
    Last edited: Jul 6, 2012

    jezzy macrumors member

    Joined:
    Jan 12, 2012
    Location:
    Montreal, Quebec
    #1
    hey guys,

    haven't posted much. it been lurking for a year.. I've been though many Mac mini's and currently own a 2011 early MacBook pro 15" i7 quad, ATV 1 and 3, thecus 7 bay raid system... so enjoy my toys.

    I felt like tinkering, so managed to find a partially complete powermac g5, dual 2.5, sadly it's an LCS unit. it's almost complete (or not?) missing ram. sd, hd, and video card. I purchased it to tinker and eventually gut and turn into a hackintosh case.

    I only paid 40$ for it, so not a huge loss.

    I verified the moisture pad under the LCS system, it is wet. I can see a fluid track from the single pump down to the power supply.. so far not looking good.

    I plugged it in, and powered it on. surprisingly it has power! all the fans turned on, white led the front turns on. red led near the front face plate. no beeps, white led not flashing.

    I can assume the power supply is working, can I assume motherboard is still good??

    I guess I need some hope before spending any money on it.

    I will need to remove the LCS system, looks like I need a new pump or seals?

    thanks! looking fwd to this little project!

    by the way, how can I confirm if it's a late or early unit?

    SuperDrive is IDE, harddrive is sata, 8 ram slots.. single pump LCS..
     
  2. drorpheus macrumors regular

    Joined:
    Nov 20, 2010
    #2
    it definately sounds like the lcs is emtying out. The difference between the dual 2.5 and the dualcore 2.5 easiest way to see is do you have 1 g5 logo or 2 g5 logos over the cpus? 2 logos were on the dual 2.5 june2004 the quad 2.5 had one centered logo.

    its not too hard to fix, but you'll need to learn how to diassemble the whole rig and clean all the crystalized coolant that are bridging connections on the cpu cards and then yeah replace the o rings seal them with gasket sealant, clear out and refill the cooling supply perhapse replace the hoses too. Its not as hard as everyone makes it out to be.

    If your willing to spend money, for $150-$200 you could buy a panasonic cooling system thats sealed and will never leak, then if the logic board is good, youd just drop it in, calibrate it and done. But most dont want to put any money into non brand new machines.

    Once you learn to take it completely apart, you'll see what got soaked in coolant, be it the logic board, cpu, or power supply.
     
  3. Lil Chillbil macrumors 65816

    Lil Chillbil

    Joined:
    Jan 30, 2012
    Location:
    California
    #3
    I'm guessing its not the power supply that got wet since it turns on
     
  4. drorpheus macrumors regular

    Joined:
    Nov 20, 2010
    #4
    yeah it still works if he got it to fire up, im sure it is rusted and partially eaten through though. Its normal automotive coolant.
     
  5. California macrumors 68040

    California

    Joined:
    Aug 21, 2004
  6. jezzy thread starter macrumors member

    Joined:
    Jan 12, 2012
    Location:
    Montreal, Quebec
    #6
    thanks for th support!

    I've ripped apart the LCS unit. removed the hoses (pointless in my opinion), ended up cracking one of the plastic barbs on one of the processor cooling plate. found a replacement for 10$ shipped, luckily.

    I also bought some used ram 20$ for 2gb, and a cheapo video card for 12$ shipped too! as I don't know if the motherboard is alive, I won't spent too much in parts at this time

    I also ordered replacement LCS o-rings, sadly a bag of 100! so I will have o-rings for those who have dual 2.5 units cpu's. I also ordered replacement hoses

    I noticed the single pump also as an o-ring. anyone replace this? I may glue this pump together to seal it..

    can anyone off me the calibration software? I can't seem to find a seed or nzb anywhere.

    I should have subbed to my thread! ;)

    yes, I had a TON of leakage/ (white rice) around the processor. nothing got to the motherboard, psu has been wet, but still works. no rust. I think I caught this in time.

    Ill update as I go!

    ----------

    is it really automotive coolant?

    ----------

    even if I'm not the original owner and no bill? sadly I opened it.. changes anything?

    ----------

    btw, how can I tell if motherboard is still good without ram, video card?
     
  7. 666sheep macrumors 68040

    666sheep

    Joined:
    Dec 7, 2009
    Location:
    Poland
    #7
    You can't. You need video card at least.
     
  8. jezzy thread starter macrumors member

    Joined:
    Jan 12, 2012
    Location:
    Montreal, Quebec
    #8
    thanks, it'll arrive next week and hope to rebuild soon.
     
  9. jezzy thread starter macrumors member

    Joined:
    Jan 12, 2012
    Location:
    Montreal, Quebec
    #9
    So just to follow up on my thread.

    I've completed the LCS overhaul, new o-rings, new tubes (horrible job, never again).. and re-filled it with new liquid coolant.

    Slapped in a video card I got for 10$ from ebay, I managed to find some DDR 400mhz from an old Pentium 4 I had lying around..

    Pushed power... and it worked! Booted right up! Works great !

    Just ordered a 6800 video card (40$) for it as well.

    And, just the other day, I got a FREE 1.8 dual processor system ! not working, didn't bother to troubleshoot. I gutted it and is now ready for converting to a hackintosh case.. (mountainmod tray and front IO harness is underway!) I got a free superdrive and 4GB out of it for my 2.5 unit !
     
  10. VanneDC macrumors 6502a

    VanneDC

    Joined:
    Jun 5, 2010
    Location:
    Dubai, UAE
    #10
    nice job Jezzy, congrats on getting it to boot after the LCS fixup. :D

    let us know what you end up maxing the system out to. :D

    cheers
     
  11. jezzy thread starter macrumors member

    Joined:
    Jan 12, 2012
    Location:
    Montreal, Quebec
    #11
    got the 6800 ultra, wow beautiful card! 40$ to my door with original box and software. 6-7 years ago.. 800$ was it? ;) purring nicely in my g5.. I was thinking of getting a jive setup for 3 more drives.. not sure. I'd like to sell my thecus nas 7 bay and either use the g5 or hack tosh as my media server..l still thinking.
     
  12. Orange Furball macrumors 65816

    Orange Furball

    Joined:
    May 18, 2012
    Location:
    Scranton, PA, USA
    #12
    If you are going to do that, I think there is a hard drive expansion rack available. It adds 3 more drive cages for a total of 5.
     
  13. mike457 macrumors 6502

    Joined:
    Sep 10, 2010
    Location:
    Ontario
    #13
    That's the jive that jezzy mentions.
     
  14. Lil Chillbil macrumors 65816

    Lil Chillbil

    Joined:
    Jan 30, 2012
    Location:
    California
    #14
    congrats on the lcs repair I know I wouldn't mess with that stuff
     
  15. Orange Furball macrumors 65816

    Orange Furball

    Joined:
    May 18, 2012
    Location:
    Scranton, PA, USA
    #15
    Ahh my mistake!
     
  16. jezzy thread starter macrumors member

    Joined:
    Jan 12, 2012
    Location:
    Montreal, Quebec
    #16
    anyone here with jive experience? I have a deal for the jive tray, but the controller card is so expensive and wondering if there's alternatives?

    btw, LCS overhaul isn't bad, but if I were to do it again, I'd leave the tubes in place and swap out the orings. quite sure it's possible.

    I have a bag of 98 rings here for those with dp 2.5's!
     
  17. phillystudent macrumors newbie

    Joined:
    Jul 28, 2012
    #17
    I'm curious, where'd you grab the 6800 from? I just got my PM11.2 Dual 2.3 G5 today. :)
     
  18. Nameci macrumors 68000

    Nameci

    Joined:
    Oct 29, 2010
    Location:
    The Philippines...
    #18
    Your options for graphics are 4 choices, nvidia 7800gt, ati x1900, nvidia quadro fx4500 and nvidia 7800gtx
     
  19. phillystudent macrumors newbie

    Joined:
    Jul 28, 2012
    #19
    Who, me?
     
  20. jezzy thread starter macrumors member

    Joined:
    Jan 12, 2012
    Location:
    Montreal, Quebec
    #20
    yup, you have pci express, and I've got agp..!
     
  21. mike457 macrumors 6502

    Joined:
    Sep 10, 2010
    Location:
    Ontario
    #21
    I have used the Jive, and found it was great. The tray itself is cheap, but (as you say) the controller card is the big expense. You would need some form of SATA (preferably at least level 2) controller card with three internal ports. Does your deal on the jive include the sata cables and the power cables? Those are vital. BTW, jezzy, haven't I met you on ehMac? :)
     
  22. jezzy thread starter macrumors member

    Joined:
    Jan 12, 2012
    Location:
    Montreal, Quebec
    #22
    mike, yup it's me! I'm still thinking about that jive.. darn controller card is pricy! unless I get another make thatll do the job?
     
  23. jezzy thread starter macrumors member

    Joined:
    Jan 12, 2012
    Location:
    Montreal, Quebec
    #23
    anyone have a spare he cage laying around? I cut mine up for the case mod, but it didn't work. :(
     
  24. jezzy thread starter macrumors member

    Joined:
    Jan 12, 2012
    Location:
    Montreal, Quebec
    #24
    just an update.. sadly the g5 I fixed has now kicked the bucket last night. The system was running, I heard a pop.. the ups shutdown, the g5 lost power, then smelled a burning electronics smell. I'm assuming the power supply finally died? chances are my LCS repair leaked or the former leak finally killed the unit. in any case, it's not being repaired this time around. I got myself another hackintosh case i guess!

    I've got 4gb (8x512mb) up for grabs and a fantastic 6800 ultra agp too! if anyone needs spare parts, I may let some go. I've got parts from two machines now..

    it was fun while it lasted ;)
     
  25. Zeke D macrumors 6502a

    Zeke D

    Joined:
    Nov 18, 2011
    Location:
    Arizona
    #25
    I sent you a PM.
     

Share This Page