Glue like substance around a chip on the motherboard

Discussion in 'MacBook Pro' started by Meitou, Jul 16, 2013.

  1. Meitou, Jul 16, 2013
    Last edited: Jul 16, 2013

    Meitou macrumors member

    Joined:
    Aug 25, 2012
    #1
    So yesterday, I was experiencing constant disconnection after 5 minutes, which I would then proceed to reboot. However, the problem persisted and I decided to turn off wifi and shut off the mac. I think proceeded to take the case off to see if the wires were disconnected. When I opened up the case, there was some glue like substance that was on my logic board. I'm not really sure what it is but I have attached a picture of it. When I turned on my mac once against, there was a problem with my wifi card, when hovered over the wifi icon in my task bar, it said that there was no hardware installed. I took it to the apple store this morning and they said the problem is with my airport card, it needed to be changed. Since it was still under warrenty, I left my mac to be fixed. However, I did not ask why there was glue like substance on my logic board because I'm not sure if it voided my warranty if I said that I opened up the bottom case. Was wondering if anyone could tell me what it is, here is a picture. [​IMG] From my perspective, it seems like something was melted underneath the chip, what do you guys think?
     
  2. Big-TDI-Guy macrumors 68030

    Big-TDI-Guy

    Joined:
    Jan 11, 2007
    #2
    Your picture is very fuzzy - if you are talking about the adhesive / epoxy surrounding the chip near the foreground - it's exactly that. Because it's likely a BGA (ball grid array) - they are mounted and secured to stay in place with adhesive to increase their mechanical strength. (as the solder connections tend to be VERY thin - and are less robust when it comes to mechanical stresses vs other types)

    I've seen some even applied before any soldering is done - to keep the chip in the correction location after multiple reflow cycles. They also do it to help with thermal conductivity in some designs, and to keep moisture / debris from getting between the IC and the PCB it's mounted to.
     
  3. lagisibuk macrumors 6502

    Joined:
    Jun 25, 2013
    Location:
    Always Somewhere
    #3
    dont worry about this.
    i found same on my old macbook (2010) and it's normal ...
     
  4. Meitou thread starter macrumors member

    Joined:
    Aug 25, 2012
    #4
    thanks guys, and Big-TDI-Guy that was exactly what I was talking about Thanks for the information guys, hope the people over at Apple can fix my problem, still have 1 month of warranty:). It would be great if they found out the wifi problem was because of my logic board and they replaced it. But that's being optimistic :rolleyes:
     
  5. nickandre21 macrumors 6502a

    Joined:
    Jun 21, 2012
    #5
    i think thats the smc chip, my late 2011 did not have the glue but my mid 2012 did have. Its totally normal found on many electronics.
     

Share This Page