Results 1 to 2 of 2
  1. #1

    Member Since
    Mar 28, 2008
    What are symptoms of a completely overheated processor?
    Ok, about 3 weeks ago I replaced the DC in board on my wife's 15" G4 1.25 powerbook. When I replaced the mobo I cleaned off all the heat paste and reapplied new generic while silicone based heat paste from Radio Shack. I did not know about Arctic 5 at the time. The computer has worked fine ever since until earlier this week.

    It had been on running for a while when my wife noticed a "hissing" noise coming from the computer. She said she could smell a hot, burning smell and the computer was frozen with Safari up. She shut it down, and later tried to reboot it with no luck. When you power it up the grey screen comes up and the spinning clock comes up, but it does nothing, and after a while it goes to a blue screen.

    I just removed the mobo again, and am wondering what has failed. There was good coverage of thermal paste on all the spots that Apple used it. The paste on the processor area was wet around the edges - almost like the paste had sizzled the moisture out of itself?

    So, what does this sound like to you? Would the white paste versus arctic silver cause a meltdown? How can I test the processor?

    Oh - and if you think it's the paste I need to know fast. My mother in law's G4 got the same paste at the same time when I went in and resoldered the dc in jack back into the dc in board that it had broken loose from. I told her not to use it till I figure out what happened!

    Thank you!

  2. #2

    Noels's Avatar
    Member Since
    Mar 03, 2008
    Annapolis, MD
    Macbook, 2.2 GHz, 4GB RAM

    Sounds like to me you used too much paste on the processor. Too much is as bad as not enough and I suspect that hissing and the wet edges is indicative of burning excess paste. You need to apply paste on an Intel dual core CPU down the middle of the cores in a thin stripe, then put the heat sink on carefully to insure a good bond.

    Here's the Arctic site for Intel CPU pasting. Pick out the processor that is yours and click on it. You will get an instructional pdf that will show you how to paste the CPU.

    BTW, I recommend springing for some Arctic Silver. Cheap enough and it works great! I've been using it with my builds for 3 years now...

    Good luck, Noel

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Similar Threads

  1. Symptoms of a dying HD, please
    By dee gee in forum Other Hardware and Peripherals
    Replies: 4
    Last Post: 02-20-2015, 04:05 PM
  2. Replies: 2
    Last Post: 02-07-2012, 09:11 AM
  3. Help with imac symptoms
    By liq2 in forum Apple Desktops
    Replies: 3
    Last Post: 06-07-2011, 03:07 PM
  4. Overheated?
    By jpics in forum Apple Notebooks
    Replies: 2
    Last Post: 12-28-2008, 11:40 PM
  5. Power Charger just overheated?
    By xj6jaguar1985 in forum Apple Notebooks
    Replies: 4
    Last Post: 09-30-2008, 06:22 PM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts