Page 2 of 3 FirstFirst 123 LastLast
Results 11 to 20 of 30

Thread: Re-applied thermal paste - computer won't start

  1. #11
    Gold Member
    trigggl's Avatar
    Join Date
    November 6th, 2010
    Location
    Arkansas
    Posts
    2,077

    Re: Re-applied thermal paste - computer won't start

    Here's the offending part of the motherboard. USB items are circled in Red. 1394 items in Yellow. Notice that the USB1 label is closer to the 1394 connector than the text "1394" or the actual USB1 connector.

    USB_1394.jpg

    Nice that I got a picture of the evidence of my folly.

    Here's the patient right before I hooked it all up and failed to launch. I wonder if I should flip the cpu fan to blow away from the processor.

    6r39 7r199



  2. #12
    Past Administrator
    Fire$torm's Avatar
    Join Date
    October 13th, 2010
    Location
    In the Big City
    Posts
    7,938

    Re: Re-applied thermal paste - computer won't start

    Quote Originally Posted by trigggl View Post
    Nice that I got a picture of the evidence of my folly.

    Here's the patient right before I hooked it all up and failed to launch. I wonder if I should flip the cpu fan to blow away from the processor.

    Yes but the fan may fail if it doesn't use ball bearings for shaft support. Sleeved bearing fans tend to complain when run upside down.


    Future Maker? Teensy 3.6

  3. #13
    Gold Member
    trigggl's Avatar
    Join Date
    November 6th, 2010
    Location
    Arkansas
    Posts
    2,077

    Re: Re-applied thermal paste - computer won't start

    Quote Originally Posted by Fire$torm View Post
    Yes but the fan may fail if it doesn't use ball bearings for shaft support. Sleeved bearing fans tend to complain when run upside down.
    Technically, it's running vertical either way. It is a tower after all.
    6r39 7r199



  4. #14
    Past Administrator
    Fire$torm's Avatar
    Join Date
    October 13th, 2010
    Location
    In the Big City
    Posts
    7,938

    Re: Re-applied thermal paste - computer won't start

    Quote Originally Posted by trigggl View Post
    Technically, it's running vertical either way. It is a tower after all.
    NM...


    Future Maker? Teensy 3.6

  5. #15
    Silver Member
    kmanley57's Avatar
    Join Date
    May 1st, 2012
    Location
    Colorado
    Posts
    193

    Re: Re-applied thermal paste - computer won't start

    On turning the fan over. You then are pulling some of the warm air the upper case fan would have been trying to exhaust and blowing it back into the case past the CPU heatsink. While right now it blows downward where the case fan will try to exhaust it right out of the case instead.

    So it depends on what the side of the case has where the CPU fan is blowing if turned over. Like another case fan blowing out/in or side louvers.
    BOINC Sees it - BOINC DOES it!



  6. #16
    Gold Member
    trigggl's Avatar
    Join Date
    November 6th, 2010
    Location
    Arkansas
    Posts
    2,077

    Re: Re-applied thermal paste - computer won't start

    Now I'm getting random restarts.

    What's odd is that it has nothing to do with whether I'm running the boinc client or not. I shut it down to talk to my daughter on Skype and after a couple minutes of talking the computer just died. It took a couple restarts for it to get going again. I tried the Skype call again and after a minute, dead. I came home last night, screen was blank, mouse and keyboard unresponsive and couldn't get it to return a ping. It had the hard drive access light constantly on, but no other signs of hard drive activity. I disconnected the PATA hard drive just in case that was going out and causing it. It started up, but had the same symptom of lights on nobody home. I should mention all fans (CPU) were full tilt.

    I left the side open and looked in. It looked like the motherboard power cord was getting close to the rear exhaust fan. I reached in to pull it away a little bit. That must have changed something because the computer instantly died and then started up normally with the CPU fan coming on at a low setting. So, I took the computer back to the bench (ironing board) and did my best to readjust the cables to be looser and not pushing against anything.

    I hooked the computer back up and it started normally. I started running boinc and after a bit, it restarted. It's currently running since last night and I'm typing from it with boinc going full tilt.

    Anybody got any ideas of what part could be causing this? Could it be a loose SATA connection, something pressing against a GPU? I'm not getting any S.M.A.R.T. errors. I'm not sure if something is shorting out or if something has a bad connection. I hate intermittent problems. Break or don't. It doesn't turn off and stay off. It dies and then starts back up sometimes working sometimes not.
    6r39 7r199



  7. #17
    Past Administrator
    Fire$torm's Avatar
    Join Date
    October 13th, 2010
    Location
    In the Big City
    Posts
    7,938

    Re: Re-applied thermal paste - computer won't start

    Based on what you just stated, it sounds like there is a connector problem. Take a close look at both of the 24-pin (Main Power) connectors, male (motherboard) & female (PSU Cable). Check for signs of arcing/scorching/oxidation & misshaped pins. Also inspect the individual wires of the PSU cable, near/around were they enter the 24-pin connector. Look for melted/damaged/missing insulation or other signs of wear.

    Edit: Repeat for the 4/8-pin Aux. power connectors.
    Last edited by Fire$torm; 03-02-13 at 02:11 PM.


    Future Maker? Teensy 3.6

  8. #18
    Friend of SETI.USA
    Join Date
    November 15th, 2010
    Posts
    2,452

    Re: Re-applied thermal paste - computer won't start

    It took a couple restarts for it to get going again. I tried the Skype call again and after a minute, dead. I came home last night, screen was blank, mouse and keyboard unresponsive and couldn't get it to return a ping
    That leads me to believe it could be the Power Supply it's self ... When ever I'm getting a lot of shut down and then hard to restart I change the Power supple to either confirm it's the PSU or or it's not the PSU that's causing the problem ...

  9. #19
    Gold Member
    trigggl's Avatar
    Join Date
    November 6th, 2010
    Location
    Arkansas
    Posts
    2,077

    Re: Re-applied thermal paste - computer won't start

    Quote Originally Posted by Fire$torm View Post
    Based on what you just stated, it sounds like there is a connector problem. Take a close look at both of the 24-pin (Main Power) connectors, male (motherboard) & female (PSU Cable). Check for signs of arcing/scorching/oxidation & misshaped pins. Also inspect the individual wires of the PSU cable, near/around were they enter the 24-pin connector. Look for melted/damaged/missing insulation or other signs of wear.

    Edit: Repeat for the 4/8-pin Aux. power connectors.
    I finally got around to this. The 8 pin connector has a lot of heat damage and 3 of the pins are blackened. Basically, the power side has been getting hot enough to melt the connector. That's apparently why moving the connector around caused it to start and not start. The pins are blackened, so it wouldn't have had a good connection. Question is, why was it getting so hot? I tested the power supply before installing the board. I even checked for AC where should only be DC.

    I used this PSU with the AMD X6, so I'm pretty sure it should be able to handle this. I'm going to re-configure where some connectors are going to and see if things can get more stable. It's actually been running pretty stable for the past week. There's an extra connector on the board that I didn't think I needed to connect to, since the PSU connects directly into the GPU's, but I'm going to hook it up, now. Now I just need to figure out how I'm going to clean up the 8-pin connector.
    6r39 7r199



  10. #20
    Past Administrator
    Fire$torm's Avatar
    Join Date
    October 13th, 2010
    Location
    In the Big City
    Posts
    7,938

    Re: Re-applied thermal paste - computer won't start

    Quote Originally Posted by trigggl View Post
    I finally got around to this. The 8 pin connector has a lot of heat damage and 3 of the pins are blackened. Basically, the power side has been getting hot enough to melt the connector. That's apparently why moving the connector around caused it to start and not start. The pins are blackened, so it wouldn't have had a good connection. Question is, why was it getting so hot? I tested the power supply before installing the board. I even checked for AC where should only be DC.

    I used this PSU with the AMD X6, so I'm pretty sure it should be able to handle this. I'm going to re-configure where some connectors are going to and see if things can get more stable. It's actually been running pretty stable for the past week. There's an extra connector on the board that I didn't think I needed to connect to, since the PSU connects directly into the GPU's, but I'm going to hook it up, now. Now I just need to figure out how I'm going to clean up the 8-pin connector.
    That 8-pin connector supplies power to the PCI-E slots. So most likely its your GPUs that are cooking the connector. The other possibility is a faulty connection within the PSU or MB (or both) 8-pins.


    Future Maker? Teensy 3.6

Page 2 of 3 FirstFirst 123 LastLast

Posting Permissions

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