2010 MBP with GPU switching & no battery charging, need some technical advice...

Discussion in 'MacBook Pro' started by SamuelL421, Dec 26, 2012.

  1. SamuelL421 macrumors newbie

    Dec 26, 2012
    Hi all, hopefully someone here can help me out, I've got a mid 2010 MBP with some GPU and battery issues and I'm trying to figure out what to try/replace next.

    Here's the mac:

    mid 2010 15" with 2.8 i7 running 10.6.8 snow leo
    8gb ram (memtest ran, confirmed no issues with either stick as well)
    500gb HDD
    1680x1050 screen
    330gt 512mb version GPU with intel hd GPU switching

    My problems: (as best I can explain...)
    #1 the battery
    Firstly, the battery. No matter what, my battery is throwing up the condition: "Replace Now" status to the system and will not charge at all. Looking at the system info I get this:

    Battery Information:

    Model Information:
    Serial Number: W0018PU18BWZA
    Manufacturer: SMP
    Device name: bq20z451
    Pack Lot Code: 0000
    PCB Lot Code: 0000
    Firmware Version: 0201
    Hardware Revision: 000a
    Cell Revision: 0158
    Charge Information:
    Charge remaining (mAh): 0
    Fully charged: No
    Charging: No
    Full charge capacity (mAh): 0
    Health Information:
    Cycle count: 242
    Condition: Replace Now
    Battery Installed: Yes
    Amperage (mA): 0
    Voltage (mV): 9464

    System Power Settings:
    AC Power:
    System Sleep Timer (Minutes): 10
    Disk Sleep Timer (Minutes): 10
    Display Sleep Timer (Minutes): 10
    Wake On AC Change: No
    Wake On Clamshell Open: Yes
    Wake On LAN: Yes
    Current Power Source: Yes
    Display Sleep Uses Dim: Yes
    GPUSwitch: 2
    Battery Power:
    System Sleep Timer (Minutes): 10
    Disk Sleep Timer (Minutes): 10
    Display Sleep Timer (Minutes): 2
    Wake On AC Change: No
    Wake On Clamshell Open: Yes
    Display Sleep Uses Dim: Yes
    GPUSwitch: 2
    Reduce Brightness: Yes

    Hardware Configuration:
    UPS Installed: No
    AC Charger Information:
    Connected: Yes
    ID: 0x0100
    Wattage (W): 85
    Revision: 0x0000
    Family: 0x0085
    Serial Number: 0x00731944
    Charging: No

    ^You can see, the battery is being read as having on 242 cycles on it, but doesn't seem charge under any circumstances. I read somewhere that an indicator light would change color on the MBP when the battery was charging? Maybe on my magsafe? (forgive my stupidity - longtime UNIX, macpro, and hackintosh guy here - first time MBP owner :!: ) As of now I only have the magsafe connector lighting up a solid green.

    I picked up a new DC/magsafe in board/connector from a friend earlier today and replaced this port on the side of the MBP. Unfortunately no change and I still just get the solid green light - so I think this is working correctly as is my 85w power adapter. I've tried SMC reset as well but I'm not even sure if it worked. Again, I read somewhere that the light on my magsafe should've turned red but Control+option+shift+power didn't seem to do anything for me.

    Any thoughts/suggestions on these battery issues?

    #2 The GPU

    Also, a totally separate problem, my MBP seems to crash whenever switching from the intel GPU to the Nvidia graphics. Everything basic presents no problem, web browsing, word, simple desktop tasks. But running anything GPU intensive seems to crash my system, although I can't tell if it's actually becoming totally unresponsive or not. Once the Nvidia GPU should be running, I just end up with a black screen...

    Gut instinct tells me this means bad GPU, bad driver, chip overheating and unsoldering from the main logic board, or vram failure. I'm just not sure where to start or what the next step should be for further troubleshooting to find the cause of the problem. I think SMC reset could also be useful for this but again, I don't know if SMC reset is working correctly or not.

    Part of me wants to just update to mountain lion and see if there is a driver fix but that seems like a long-shot solution. Also my 10.6.8 is fully updated as is. I have also already cleaned the system of dust and went through everything, redoing the thermal compound and pads. The compound itself I cleaned up with AS Thermal remover/purifier. I also replaced that cheap/badly applied stock compound with Tuniq tx4, before reattaching and evenly tightening the heatsinks. In any case, I think I can now rule out the overheating as well.

    Any thoughts here, what do you think I should try next with the GPU issue?
  2. macuserx86 macrumors 6502a


    Jun 12, 2006
    I would recommend a clean install of 10.8 before doing anything else.
  3. Blue Sun macrumors 6502a

    Feb 11, 2009

    If either of the issues remain on 10.8, go talk to Apple. But my feeling is the GPU switching issue will be resolved when you've installed 10.8 and updated to 10.8.2. The battery however, is most likely faulty and will probably need replacing.
  4. chrfr macrumors 604

    Jul 11, 2009
    This is probably why the computer is crashing when you switch to the Nvidia GPU:

    The battery has failed and needs replacement. Just a coincidence, most likely.

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