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Noisy fan + won't shut down

Discussion in 'EP121 Slate' started by MindyAZ, Feb 25, 2012.

  1. MindyAZ

    MindyAZ Poodle of Doom

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    Hi all! I know there is a noisy fan thread or 2 because I read them. They most often do not address the problem and only tell people to return it. Or the problem was solved in a random way that can't be quantified for the average user.

    I bought my ep121 used from a previous owner, so I can't really take it back or send it to get fixed. It's warranty is long run out. I'm guessing the person never figured out that the fan was running unusually.

    So basically I have two issues. One is that the fans pop on full speed after 3-4mins every time ( same as having the thermal sensor out). When you click shut down, it takes you out of windows, but you can hear fan and see the light at the top on ( it'll stay on indefinitely until you hard shut it down with the button at the top). If you chose 'restart' from windows start menu, it'll shut down all the way, but won't restart ( use restart to shut down). This is all after reinstalling windows 7 home premium from the asus disks ( it was unuseable before so I don't know if it did it before the the recovery installs). I did the reinstall about 5 times or so. Same results.
    Oh and the bios is the 501( it was already on there when I checked?)

    What I did:
    • Put on Windows 7 fresh from its stock disks.
    • Tried removing the thermal sensor from bracket, but the sound was the exact same.
    • Tried put a cooling pad under the whole thing where the sensors were attached, no change
    • Used a third party program to check temperature(85c from a cold start for cpu and no fan would list so I couldn't control the fans manually).
    • Found a sensor through a website in Europe but it'll be $40usd to get it. So if someone has it through a different site in the United States I'd appreciate it because I can't find it anywhere but the Swedish or the French site. Asusparts


    I would deeply appreciate any help!
    ( Also any advice on if you might think it's the thermal sensor or the fans themself?)
     
  2. MindyAZ

    MindyAZ Poodle of Doom

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    Forgot to add that the fans do not run differently in Bios menu or safe mode or anything. They always automatically pop on high speed after 3-4 mins.
     
  3. CF77

    CF77 Love Tablet. Senior Member

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    check for cold solder joint problem along the sensor and lm78 on board.
     
  4. Agent 9

    Agent 9 Scribbler - Standard Member Senior Member

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  5. MindyAZ

    MindyAZ Poodle of Doom

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    What's the lm78? I see the thermal sensor ( the one attached to the back casing and slides into a tiny bracket on the board. We're talking about the same one right, the ribbon cable sensor? :) And also what would the problem be? Is it usually loose or something?
    Thank you so much!
     
  6. MindyAZ

    MindyAZ Poodle of Doom

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    Okay I"ll look for those programs. I was using speedfan and something else suggested in the other noisy fan thread. I did see the thermal paste fix but I wasn't sure how it related when the cpu wasn't getting hot? The temperature reading I was seeing seemed totally off since the fan turned on whether the thermal sensor was plugged in or not. And the cpu would read a weird temperature ( same all the time ) when it was coming from a cold start after being off all night and day..

    I'm going to attempt using those programs first.

    I'll check out the modded bios, I just don't want to get myself in a stick situation since I'm not so bios savy ( I can get in and do bare minimum).

    Thanks again! I hope I can fix this fan thing. I really like this slate :)
     
  7. Steve S

    Steve S Scribbler - Standard Member Super Moderator

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    <<...check for cold solder joint problem...>>

    <<...And also what would the problem be?..>>

    ...A cold solder joint is a soldered connection where the solder didn't flow between the two parts because one part wasn't adequately heated (typically). Unfortunately, it can be difficult to visually identify such a problem unless the soldering was really botched, and that's not typically the case with mass-produced electronic assemblies. More commonly, you need a multimeter, some freeze spray and (mostly) a bit of luck.

    Although it sounds like you might have a defective thermal sensor, the fan turn-on delay ("...the fans pop on full speed after 3-4mins every time...") doesn't sound typical to me. I would suggest that you contact Asus Tech Support and at least enquire about the cost of replacing the thermal sensor. As a back-up, see if you can order the part from overseas. My guess is that these are you two best options; if it does turn out to be software related, Asus probably has the best chance of figuring it out...

    Good luck...
     
  8. MindyAZ

    MindyAZ Poodle of Doom

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    I'm not sure about freeze spray, but i do have a multimeter.

    As for the part I only found 2 places online carrying it. One is a French site and the other is Swedish ( called asusparrts). It will be $40, due to shipping costs, at6 both sites. The delay also happens when I unplug the sensor -from it's bracket. Basically, (turn it on, it posts windows login comes up and fans turn on). It might be only actually 1-2 mins. But also it happens in safe mode, in bios, etc. off and then high speed.
    if you don't mind me asking, what's typical? Do they pop on as soon as a person pushes "on"button?

    Thank you again.

     
  9. MindyAZ

    MindyAZ Poodle of Doom

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    Here is info based on cpuid and speedfan
    [​IMG]

    Uploaded with ImageShack.us
     
  10. CF77

    CF77 Love Tablet. Senior Member

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    Since Ep121 started shipping around Feb last year..your unit may still be within warranty period. Just send it in to fix.
     
  11. Steve S

    Steve S Scribbler - Standard Member Super Moderator

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    <<...The delay also happens when I unplug the sensor -from it's bracket. ...turn it on, it posts windows login comes up and fans turn on...It might be only actually 1-2 mins...>>

    ...OK, we're now back in the ball park. I'd still call Asus, but I'd try buying the replacement sensor. There have been enough stories about bad sensors that it's a reasonable possibility...
     
  12. MindyAZ

    MindyAZ Poodle of Doom

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    Well from the box it was bought from an auction 9/14/11.
    I also don't have reciept from a regular store. I bought it double secondhand. I don't think I can send it at this point? I thought the warranty is 3 months right?
     
  13. MindyAZ

    MindyAZ Poodle of Doom

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    Oh I got a better reading too! I really really appreciate you working with me on this! I can't tell you how much I appreciate taking your time to check this out. I used prime95, cpu-z, and realtemp.

    [​IMG]

    Uploaded with ImageShack.us

    [​IMG]
     
  14. Steve S

    Steve S Scribbler - Standard Member Super Moderator

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    In absolute terms, the temperatures that you are showing aren't severe at all; they are well within the permissible operating range.

    <<...I don't think I can send it at this point?..>>

    ...You can always send it in for service; it's just that you may not be able to get warranty coverage. But the thing is, it costs you nothing to just ask. And even if you can't get warranty coverage, the repair estimate may not be outrageous... but you have to ask...
     
  15. MindyAZ

    MindyAZ Poodle of Doom

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    Hi Steve!
    Hope I'm not trying your patience! Thanks for continuing to indulge me so far.

    Yes the temperatures are normal ( and low, because my HP tx2000 runs at burning hot when it gets going). I did another test with my cpu using full power and it hit about 58 maybe. So the fans are on for no reason at high! I did find out something, I'm having that multiplier problem!! I used those programs with stopthrottle program. I noticed my cpu was only running at 665, even when prime95 put the test at 100%! It didn't inch away except for .1 mhz! So I put on stopthrottle and BOOM the cpu began to actually do better and I had double the performance(it was having trouble with flash on webpages). So I'm having multiplier problem too! I'm wondering if I should attempt to flash to BIOS 601. I just don't want to brick my slate ( as they say). The performance is so much better. My computer actually restaurants in a reasonable amount of time.

    So I have these items to do:
    1. Call Asus!
    2. Flash to BIOS 601
    3. Buy another thermal sensor ( Really leaning toward this to see what happens).

    Wish me luck, I'll report back. For anyone else with the noisy fan, they might try the whole multiplier check, so they can see if they are having that issue. It didn't fix my fan issue, but the performance is great!
    I want to see if I take out the thermal sensor altogether if the slate will be fixed as far as multiplier. I wonder if that means it's thermal sensor. I wish I used a multimeter better.

    Anyways! I might be a little while possibly unless I come across some more interesting tidbits or after I try an attempt. :p I'll keep looking in this thread in case anyone has any suggestions.

     
  16. MindyAZ

    MindyAZ Poodle of Doom

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    Hurray!! I did Bios first and the mod fixed my throttling problem! It's running tiptop now and I don't notice any hesitations in opening programs or anything. My slate IS back to not shutting off. Now the little light on the top stays on but the fans shut off. I have to hold the power button for a little while till it shuts off, so I can turn it on again. But CPU is properly throttling. Fans still on high and noisy though.

    THe other thing I did was call Asus. Their computers are down so I have to wait for about 1.5 hours or so and call again. The representative did tell me the Warranty is 1yr. So I'm still well within the manufacture warranty unless the actual slate was bought a long time ago by the previous owner.. I truly hope it was more recently, like September. Unfortunately they don't carry parts. But I won't worry about that if I can send the unit in. So wish me luck <3 :)
     
  17. CF77

    CF77 Love Tablet. Senior Member

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    you should post your bios mod result in the mod thread, so author and others can be informed.
     
  18. MindyAZ

    MindyAZ Poodle of Doom

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    Will do.
    I wish I could of also found out why the fan was on loud and what was staying on to keep my slate on. Anyways hopefully they fix everything alright. I can't wait to really get to play with it, since I only had it for so many days :rolleyes:

    Sent out to Grapevine, tx facility yesterday 2/28/12
     
  19. MindyAZ

    MindyAZ Poodle of Doom

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    My delivery confirmation says it got there 3/1/12. No RMA update yet though.
     
  20. MindyAZ

    MindyAZ Poodle of Doom

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    Did not show recieved till 3/6/12. Now it's in repair status.
     
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