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Re: install 2 case fans
You can usually install them on the back of the computer case. If that space is not available then you can always drill holes on the side panel immediately above the motherboard and mount the fan there.
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There are 2 possibilities: First, your fan, air inlet and air outlet are dirty/dusty. In this case you can use canned air to clean them up. If the dust become a dust ball, then you may have to open the laptop's base or just need a tweezer to lift the dust ball. The second possibility is the fan is dying (broken). In this case, you need to replace the fan, and it is not easy (you need to disassemble your laptop) to replace the fan.
The proper installation of a CPU fan is often the subject of debate. Though there are conflicting theories as to which direction the CPU fan should face, there are methods to ascertain which CPU fan installation best suits your needs. The determining factors of your CPU fan installation direction include the manufacturer specifications, your case design and the specific design of your heat sink Horizontal Installation
The installation of a CPU fan horizontally to the plane of the motherboard is the most common installation orientation there is. Your options when installing your CPU fan are to blow cool air onto the heat sink or to pull cool air through the heat sink from the motherboard. Horizontal installations show negligible advantages in either installation direction. The differences in temperature usually vary by only 1 or 2 degrees Celsius. The main point to consider when installing a horizontal CPU fan is the location of the rear exhaust fan on the case. If the rear exhaust fan on the case is parallel to the processor, it is advantageous to have the fan pull cool air from the motherboard and push it out above the heat sink. This is because the case fan will quickly draw that hot air away from the CPU and out of the case, allowing for quick cooling.
Vertical, or tower, heat sinks rise high enough off the motherboard to allow for a fan to be installed perpendicular to the plane of the motherboard. This allows for cooling to go from the front to the back of the case, as opposed to going from the bottom to the top. Optimal installations for vertical heat sinks are blowing toward either the back or the top of the case. If there is no exhaust fan in the top face of your computer's case, it is more effective to orient your fan on your vertical heat sink so that it blows toward the rear exhaust fan of the case. If there is an exhaust fan on the top face of your computer case, it is almost always more effective to mount your CPU fan so that it blows air up toward the top of your case. The reasoning behind this is that hot air rises and will more naturally flow off the top of your case. Also, top-mounted fans are usually larger and allow for faster airflow out of the case.
It is often the case with nonstock heat sinks that the manufacturer has designed the heat sink's fan to be mounted in a limited number of orientations. This is usually evidenced by limited mounting notches on the heat sink itself. Most aftermarket heat sinks use technologies such as heat pipes that have specific cooling needs to operate appropriately. Because of this, it is important that in any CPU fan installation you follow the manufacturer's installation instructions.
Case fans tend to blow in the air out of the side of the fan which has the four plastic bars and normally the sticker. The fan may also have a set of arrows describing direction of rotation and flow of air.
The case fan should start running as soon as you turn on the computer. I would replace the fan with a higher capacity (CFM). If you have a case that can take 2 case fans, I would install the send fan. Also with the case off, check that the CPU cooler fan is functioning. With the quick shut off, I would suspect that the CPU cooler fan is not functioning. I could be impeded by dust. Vacuum and blow out any dust on the motherboard, fans and battery fan while you have the case off.
This should aleviate the shutoff problem due to overheating.
Let me know if this solves the problem.
Please rate this solutution. Thanks.
Assuming we are talking about a case fan, bring out a flashlight and possibly a magnifying glass, and start sweeping your main/motherboard, every place you see free pins or connectors there will be a tiny white text next to it on the circuitboard. Fan connector should be between 2 and 4 pins, and be labeled "CASE FAN 1/2" or similar.
Secondly secure the fan itself using either metal screws or anti vibration rubber screws, and you can mount it anywhere it fits / where the power cable allows it to go.
Bare in mind the direction of the airflow when positioning the fan, note that it is generally better to have more fans sucking air into the case than blowing out, creating a higher pressure inside the case and thus preventing dust from getting sucked in & clogging small openings like unused USB ports and most of the media ports on PC back side.
I think that particular model has the fan mounted in the back of the case just below the power supply. It has a duct that goes from the fan to the processsor. Remove case cover and remove the duct by pressing the 2 tabs on the top of the duct and rolling it back and out. Unplug the fan cable from the mainboard . Make sure you remember the connector as you will have to plug the new fan cable back in. Remove the screws that hold the fan to the case and remove the old fan. Install the new fan, plug in the cable and if your computer is dusty on the inside blow it out with some canned air . Re-install duct by sliding tab at bottom in first then pull up to lock in top tabs. Replace case cover and she's done.
The power supply comes with a fan. Therefore I guess you need to replace a bad fan. Remove the power-supply case.
Note which direction the fan spins. There is an arrow on the plastic fan case. You will note that one side of the fan is open. Be sure to put the new fan so it faces the exactly the same way. Remove the screws holding the bad fan and cut the wires leaving enough room on them to solder on to the new fan.
Your replacement is usually a normal 80mm, 12 volt case fan that provides ventilation in most PC cases.
Connect the two wires to the new fan by soldering the red wire to the red wire and black to black. Use shrink tubing or tape to insulate the connections.
A second option is to replace the entire power supply with a new one (containing a new fan). Then there is no soldering involved. If you look carefully enough, you will find them cheaply on line.