Urgent: AVC Fan Problem!, Fan[box]'s small black piece thing fell out (broke off actually) & so now avc fan hangs loose [computer dosen't work when it hangs looose].
Hi. Thank you for viewing this troubleshoot topic! I really need your help! Please T-T Computer Type Windows XP HP Pavilion a1630n AVC [Fan box]
^My fan box looks like that. [ABC fan box].
While I was on my computer, I heard a clinkkk! sound. After that, the fan started to whirl and whirl and whirl. After that, the computer just SHUT down. I opened up the computer, and then I saw a small black piece. Its what the metal long piece held onto! So the metal long piece would latch onto the small black piece (on both sides) to keep the fanbox in place.
I have my PC layed on its side, so the fan box stays in place. If i do that, the computer works. If I have my PC up right, (the fan box isn't held into place) and the comoputer acts funky--then shuts down immediately.
My attempts to fix it? -I tried to superglue the small black piece back onto the fanbox's "stage". It wouldn't stick.
At the moment, i have it laying on its side (the fan box is in place).
Any Solutions? Its a fairly new computer [6months or more, but its around that]. New fanbox & its stage it 'latches' onto i think would be expennnnsive~. T-T
What should i do? Is it okay if my PC thing lays on its side? its a big awkward but if it dosen't damage the computer then I guess if this is what I have to deal with then yea. OR do i have to buy a new fan box && stage thingy.
Sorry for my weird tech-Vocabulary. I call the AVC thingy FAN BOX (because its shaped like one) and the thing its supposed to stick to a STAGE THINGY. Between the two things, theres this whiteish peach substance. Its not glue. Its not sticky. But its like a creamish thing. Something between those two things work together to make the computer function.
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Re: Urgent: AVC Fan Problem!, Fan[box]'s small black...
That's your heatsink, and it's very dangerous for the computer to run for long without it... Laying the computer on its side does not harm it, but running it without properly installed cooling aides can be.
I suggest that you contact the manufacturer. Since your computer is less than a year old, hardware issues like this should be covered.. Just don't listen to them when they say reinstalling your OS can fix it, hah hah.
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the four wires will be 0V, 12V (from supply), and a sensor to sense speed (I think this is a voltage o/p proportional to the fan speed). The fourth wire with be the PWM signal to control the fan speed (input to the fan)
see Motherboard CPU 4 Pin Fan Connector Pinout AllPinouts
AVC BAKA9318B4H Blower Fan, DC24V 0.45A, Ball Bearing, 2-Wire
I can't find any details for that exact model except those above, but on this http://www.avc.com.tw/fan_search.asp?select1=DC-Blower&select3=&select2=&select4=&select5=&select6=&button=search
webpage from the AVC website, there is a spec for a fan very similar to that you list BAKA9318-24H This is a 93mm diameter 18mm thick blower operating at 24V, like the one you refer to. The H signifies that is the highest airflow model of that type . Your fan also has this designation. I suspect that AVC spec is actually a more general one that includes other bearing types (-24H), while the -B4H indicates that it is specifically a ball bearing blower. The max air flow is 18.3 cu ft per min at zero back pressure and the pressure developed at zero airflow is equivalent to 35.3 mm of water (1 atm is equivalent to about 10m = 10,000,000 mm of water). There is noise figure quoted as well.
four wire fans almost always have the same connections. There should be a black wire on the connector at one end. This the 0V The next one is called 'sense' and is a signal giving the fan speed. The third one, often with a red wire, is the +V line (?48V in this case I think). The fourth one controls the fan speed and carries a signal from the computer to the fan causes it rotate at a given speed.
ok in the pictures of this fan I have found the wires are not the same colours as I have mentioned above. I think the ordering is the same though - but I am less certain now. blue is speed sense, yellow is +48V red is speed control ??. You can check this by (carefully !) measuring the voltage between black and yellow wires; if it 48V then my pin assignments are more than likely correct. Or if you have your motherboard manual the pin assignment for the fan's connector should be in that.
The reason for this pin assignment is so that you can use a 4 pin fan (often 12V) with a three pin power connector: the speed control is simply not connected.
I have two articles on this, neither of which correspond to what I said in another answer.
Dell use or used to use a non standard pin out (so it will depend was made by AVC especially for Dells)
In the standard pin out the black wire is 0V, the next often yellow is +V (12V for your fan) the third one is speed sense, and the final one is speed control (you search the internet under 4-pin fan pin-out to be more confident.)
Two article are
http://www.formfactors.org/developer%5Cspecs%5CREV1_2_Public.pdf (section 4.1.6)
and http://www.setiusa.us/showthread.php?2480-PWM-Fan-Pinouts-Industry-Standard-amp-Dell-configurations the picture drom the second article I reproduce (without permission).
To be certain consult your m/b manual which should all the pin assignmens on your m/b, or you can try to measure the voltage between 0V and the second pin to verify that it is +12V in your case (it may be lower or as high as 13.2V)
The manufacturer's site says the processor is a Pentium 4 socket 775. You don't need to look for the exact replacement part. Just order a socket 775 CPU cooler from any of the many online vendors and replace the one currently installed.