Acer Aspire 7720Z Fan Dust Problem

**Aasha** · 23-03-2009

Hello, My Pc was Overheating and Making noises When i put the system on, the fan starts and stops after 3 seconds later. The screen remains black. none of the lights (a part Wifi sometimes) lights. To turn it off I have to remove the power cable (since I do not work on battery) So I decided to open it to clean the fan grill. But i dont know the Procedure .please tell how to clean the system Somebody would have an idea about what can be done here to solve my problem thanks in advance

**Simond** · 23-03-2009

There is probably a dust buildup on the heatsync. The heatsync is located right underneath the fan. underneath the heatsync is the proccessor. if the heatsync cannot properly distribute the heat that the prosessor is creating than the computer will overheat.The solution to this is to get a can of compressed air, unplug the computer and open it. In between every fin blow the air. put it back together and start her up should be just fine.

**Uriah** · 23-03-2009

Use the can of compressed air with the thin narrow straw attached to the nozzle to blow the dust off all the components inside your PC's case. Keep the can upright as much as possible to avoid liquid coming out of the can, but if it does, it shouldn't harm the computer's innards. Don't do this near kids or pets, and know that as you use the can, it will get cold in your hand. Be sure to get into all the cracks and crevices, and do dust the grill on the back of the machine as well. PC Stats says that compressed air should not be used to clean fan blades because it will make them turn faster than they were meant to and this could cause harm. The fan is plastic anyway and can be cleaned with a damp cloth,

**Theodore** · 23-03-2009

You should unplug your system and wait about 2 minutes and open your case. You systems capacitors will hold electricity for a bit which is why you should wait. Be sure to remove any static charge you may have by touching something metal other than you computer before touching ANYTHING inside your computer. An anti-static wristband is always a good idea.
Using an air duster (use 2 or 3 since they freeze up quickly) blow out ALL dust in your system. Don't just blow it around inside the case, really get it out of the system. Some people use a vacuum cleaner to clean the dust out. I don't recommend this practice since spinning air is flowing over a plastic tube which is a great way to generate a lot of static electricity. Use a clean (preferably unused) paintbrush to lightly brush off any stubborn dirt and dust. Also, using the paintbrush can help get the dust that settles in the bottom of the case after your air dusting. Be sure to blow the air duster through both sides of any fans you have. This will help get ALL of the dust out of them. One additional thing to remember when cleaning out your case is that most power supplies have their own fan and because they get pretty hot, tend to trap a lot of dust inside. You may need to open your power supply and clean it out too.

There are things that you can do to prevent the build-up of dust in your system. First, never smoke around your system. Smoke is sticky and doesn't simply pass through your system without issue. Smoke sticks to your components and then the dust sticks to the smoke, etc, etc, etc...
Using a filter on ALL incoming are fans and vents will trap the dust before it gets into your system. This is easier in some systems than others. If your system has a bunch of vent holes in it, you may have to wrap the entire case with filter material. Be sure to not cover any outgoing fans or vents. You don't want to trap the dust inside. Be sure that you have plenty of outgoing air fans and vents. If all of your fans are inbound then your system will have a positive pressure cooling system which is great for keeping out dust if ALL of your incoming ports are very well filtered. If they are not filtered properly, then MORE dust is trapped in a positive pressure cooling system. Alternatively, having a negative pressure system will actually suck dust into every opening in the case like a vacuum cleaner core. This is when you have to consider wrapping the entire system with filter material.
Ideally, you should have a neutral pressure cooling system where as much air is forced into the system as is forced out. For example, you may want two fans in the front blowing cool air in and two fans in the rear blowing hot air out. That would maintain proper air flow and few dead air pockets in the case where dust would settle.

Filter material is pretty easy to find. Using a universal window air conditioner foam filter is the most common method. Filter material can also be cut from heating and cooling filters. These are the 1 by 20 by 20 inch (2.54 X 50.8 X 50.8 cm) or similar sized filters. Placing a fabric softener sheet over an outgoing fan port will have your office or computer room smelling like a laundromat.

If dust is really bad, look into buying a sealed, positive pressure, filtered computer case. These are more expensive but run very cool and trap nearly all of the dust before it enters the system.

source- astahost.com

**Stefan09** · 23-03-2009

The goal is to move air through the case from front to back. Leaving your cover off is not the ideal way to run your box as this negates all your intended airflow. If it improves your temps, it probably means you could improve your fan setup in some fashion. On a "good" setup, taking the cover can actually increase temps.