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I need to disassemble a dv9653cl to repair or service a fan assembly, any idea where i can find the schematics?

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Cooling fan for a presario cq5621wm dont work


Central Processing Unit chips have a tendency to overheat when used for long periods of time. This is why virtually all desktop processors come installed with cooling systems that include a cooling fan. However, cooling fans are not invincible. They can burn out if they are not cleaned often and properly. To clean the fan in a Compaq Presario desktop, there is some light disassembling involved to gain access to your computer's CPU fan.

Turn off your Presario desktop and disconnect the power cord from its socket. Wait 10 to 15 minutes before you begin disassembling your computer. Attach an electro-static discharge wrist strap to your wrist and attach the wire clip to the outer casing of the desktop. This helps prevent damage to your computer caused by static electricity. Rotate the desktop so the back panel is facing you. Place the desktop on its left side. Remove the two Phillips-head thumb screws from the right side of the computer's back panel. Grasp the molded grip on the side access panel and slide the panel away from the desktop. This will reveal the interior components of your computer. Locate the cooling fan assembly attached to the back panel of your computer. Grasp the power cable extending from the fan, follow the cable to its connector on the motherboard and disconnect it from the motherboard. Locate the locking tabs on either side of the air duct assembly. Insert a small flat-head screwdriver into the notches on each tab and disengage each tab. Remove the air duct once the air duct assembly comes loose. Repeat this procedure in reverse to install the new cooling fan assembly.
This might not be your specific desktop computer it might give some insight into repair or removal

How to Properly Clean Your Desktop Cooling System & Fan http://www.youtube.com/watch?v=GgOaIJ82gFM&playnext=1&list=PLu_9NJ3Eiy2XGhZxa5wlnkxdPbrJG5hjw&feature=results_main

Feb 22, 2013 | Compaq Computers & Internet

2 Answers

HP PAVILION SLIMLINE S3300N MY COMPUTER IS RUNNING HOT. THE FAN ISN'T WORKING


The fan is either burned out, not plugged in correctly, or only runs when the system needs better cooling and is under stress. If you are comfortable with the idea, turn the system off, remove all connections from the rear panel, and remove the side panel of the computer. Locate the fan that is not functional and find the power cable attached to it. Ensure that it is properly connected. If it is, the fan may be burned out. Replacing it is simple, and a replacement can be found at a store such as Best Buy or Office Depot for a low price.
If you are not comfortable with disassembling your computer, you may have to bring the tower to a local computer repair store. The disadvantage to this is that the price will probably be higher.

Jun 19, 2011 | HP Hewlett Packard Pavilion Slimline...

3 Answers

I use PC with mother P4M800PRO-M , the fan it have a loud sound what can i do to solve this problem , thanx


just disassemble the fan and heat sink from the motherboard clean it and assemble it again sometimes processor fan cable also mesh with fan makes the sound checks that too

Feb 28, 2011 | Computers & Internet

1 Answer

Dell Optiplex GX520 has flashing amber power light. Ordered another power supply & replaced, still flashing. No fans going. I disconnected USB cables and all other connections to MOB & removed...


MAIN BOARD is deffective .....approach service engineer to check whether mainboard can be repaired or not ......iam service engineer (computers, laptops, printers, etc...) - bangalore - domlur- 09986222774 - sathyavijayasarathibabu@ymail.com

Feb 15, 2011 | Dell OptiPlex GX520 PC Desktop

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I have a 3 yar old laptop that runs loud......i have sprayed compressed air in it, and still noise. it shuts down at times. i won't try to remove the fan. i have a heat cloth under it, but its still loud....


Perhaps you should reconsider removing the fan. You may find your particular Model/Brand of laptop's fan, not that hard to access.

The pathway that leads air to the Cooling Fan, may be of a design where it has a filter. A piece of foam-like material, essentially. The pathway I'm describing is the Cooling Duct.

Using a can of compressed air for computers was/is an excellent idea.
However if I may,

1) It needs to be sprayed only in the Intake Cooling Duct, not the Exhaust Duct.
Where air is drawn in is the Intake Cooling Duct.

2) The filter I lightly described is at the end of the Intake Cooling Duct.
Dust, dirt, hair, (Animal and people), carpet deodorizer, you name it, can build up over time, and compressed air alone cannot remove it.

The area needs to be accessed, and the foreign debris physically removed.
Q-tips, a small brush, and compressed air are used.

To show some examples:

1) Moderately easy:
http://www.irisvista.com/tech/laptops/Toshiba1805/sat1805_CPU.htm
(You can click on the photos to enlarge)

The Cooling Fan assembly is near the top.

Moderately difficult:
2) http://www.insidemylaptop.com/take-apart-asus-eee-pc-1201n-netbook/

The laptop is disassembled down to the middle section, to access the Cooling Fan.

More difficult:
3) http://www.insidemylaptop.com/take-apart-hp-pavilion-dv5-laptop/

The laptop has to be completely disassembled, (Motherboard removed), in order to access the fan.

If you wish I could do my level best to guide you step by step, and if available be able to post diagrams, photos, and a Service Manual.
(Free)

Just post in a Comment.
(Want to know more about my expertise? Left-click on my avatar)

Oct 01, 2010 | Computers & Internet

1 Answer

I need schematics for Sony Vaio VGN-NR21z


I don't have the schematics for the Sony Vaio VGN-N series laptops, but I can provide a link to the disassembly instructions,

http://www.tim.id.au/blog/tims-laptop-service-manuals/#toc-sony

I'm hoping this is more inline, with what you really are after.
Scroll down with your eyes to the bottom line of listings in blue.
The line that starts with VGN-A
Scroll over to - VGN-N, and Left-click on it.

This is a PDF file.
You may have to wait up to 30 seconds, before you see the first page come up.

Jun 04, 2010 | Computers & Internet

1 Answer

DEll E310 fan make strange noises at various times. How can I replace the fan?


You didn't state which version you have, Slimline, Mid-Tower, or Desktop.

I'll give you the link to the Dell Dimension E310 Service Manual, and we'll go from there,

http://support.dell.com/support/edocs/systems/dim3100/en/sm/index.htm

FIRST:
Computer off, unplug the power cord from the surge protector, FIRST, then unplug the power cord from the back of the power supply. (Back of computer)

Unplug all cables connected to the computer. If you are not 100 percent sure where they plug into, now is the time to make yourself a chart, and add notes.

Work on a table, open the computer case.

(Cover Release Latch button on the rear of the computer, top side. The Right side cover opens.

Tilt it out, lift it up to remove. Or on the Service Manual main page, scroll down to Removing the Computer Cover, and left-click on it)

With the computer cover open TOUCH the metal frame of the computer case, to relieve your body of Static electricity.
(Static can fry out your computer's hardware components, and you probably won't see it, or feel it)

1) The Floppy Disk cable has to be partially removed.

2) The Processor's Heatsink Assembly has to be removed.

3) The SATA harddrive cables, need to be slipped out of the top of the Fan assembly cage's, squeeze connectors.
(This will make more sense, once you view the SATA harddrive's cables, and where they go across the Fan Assembly)

4) Then you can access the Fan Assembly, to get to the Fan.

A) With this Dell Dimension model, you have to remove the Floppy Disk flat ribbon cable, to access the Heatsink assembly, that sits on top of the Processor.

Remove it from the Floppy Drive ONLY. (Not shouting) Leave the cable connected to the motherboard.

You also have to slip the Floppy Disk's flat ribbon cable, out of the connector tang, that is on top of the Processor's Heatsink assembly.

(Flat steel tang, that is part of the Heatsink Assembly's frame, or cage. Pull up on the side that faces the rear of the computer, slip the Floppy Drive cable out)

This information is more easily seen, if you view the illustrations for - Removing a Floppy Drive.

On the main page of the Service Manual, scroll down to Removing and Installing Parts, and left-click on it.

On this page scroll down the left column, and left-click on - Floppy Drive

B) Removing the Processor Heatsink Assembly:

The Processor Heatsink Assembly is essentially a U shaped metal cage, that has a Heatsink attached to it.
There are 2 screws that hold the front of this metal cage down, and when removed, the cage itself tilts towards the Back of the computer.

(You may have to remove the Power Supply, to access the top screw of the Heatsink cage, or use an Offset screwdriver)

The tangs are triangular shaped, and are on the bottom of the metal cage, towards the Front of the metal cage.

The metal rectangular cage tilts back on two pivot pins, then it can be lifted up, and off.

In Removing and Installing Parts, left-click on Removing the Processor, for illustrations. (Or scroll down the page to this heading)

C) Removing the SATA harddrive cables, out of the connectors on top of the Fan Assembly:

This can be more readily seen by clicking on -
Installing a Harddrive, in Replacing and Installing Parts.

D) Now you can access the Fan.
The Fan is inside a shroud. The shroud is held to the Fan Assembly cage by plastic tangs, that are part of the shroud.

The tangs go through slots on the plastic Fan Assembly's cage.

The tangs are squeezed in, so that the hook end of the tang is able to slide out of the slot.

(It may be that the tang is pried towards the outside, so that it will clear the slot)

It's a lot of fun(?) trying to keep to tangs squeezed, so that you can slip one side of the Fan shroud, out of the slots.

This should release tension so that the other side's tangs will be able to slip their corresponding slots.

Buying a replacement fan will require a little homework, and searching various websites that offer a compatible sized fan. (Or peruse your local Mom and Pop computer repair shops)

You need to know the diameter of the Fan, as well as the thickness, (Or depth), of the shroud that surrounds the fan.

Also what type of connector it uses. 2 pin, 3 pin, or 4 pin.

The size of a fan, and the thickness of a Fan shroud, are usually stated in Millimeters. If you use the Inch system, go online, and use a free Millimeter to Inch Converter.

Here is one example, of a website that offers computer case fans,

http://www.directron.com/casefans.html

BEFORE you reinstall that Processor Heatsink Assembly! (Not shouting)

You MUST clean the top of the Processor's case, and the bottom of the Heatsink that sits on the Processor.

You will either see Thermal Paste, or a Thermal Pad.

If it is a Thermal pad, remove it, throw it away.
They are Junk, and cannot be reused!

I use an old credit card to scrape the top of the Processor's case, and the bottom of the Heatsink.
Stiff plastic, and is anti-Static.

I use Isopropyl Alcohol with Q-tips to clean the remaining thermal paste residue off.
(Rubbing Alcohol. 91 percent alcohol, or better is best)
Usually takes quite a few Q-tips, dipped in alcohol to do this.
Both surfaces must be CLEAN!

CAUTION!
Isopropyl Alcohol is EXTREMELY FLAMMABLE, and burns clean. The flame is virtually colorless. Use in a well ventilated environment, and with no sparks, or flames present.

The top of a Processor's case, and the bottom of a Heatsink are not perfectly smooth. To the human eye they may seem so.

There are microscopic pits, and valleys. These create Air Pockets.
Air is an Insulator, not a Conductor.

Thermal paste fills these voids. Thermal paste is an excellent Conductor, and transfers heat well.

The heat Must be transferred from the Processor to the Heatsink, so that the fan will transfer the heat away, from the fins of the Heatsink.

When a Processor becomes too hot, it turns off. (BIOS turns it off)
This is a Fail Safe feature that is built-in, to keep the processor from burning up.

Jan 31, 2010 | Dell Dimension E310 PC Desktop

3 Answers

I am looking for a schematic circuit for the Toshiba Satellite P25-S526/P25-S5261. I need to replace all of the USB ports on the laptop - lets just say my kids tend to pull out cords by "accident". I...


Below is the link to the service and repair manual. The schematic of the main bosrd is in the "B" appendix. Open the file, it is a pdf file and scroll down past the disassembly guide, When you get to the appendixes, it will be on B-1 and B-2, that will show the top and bottom of the board.


http://tim.id.au/laptops/toshiba/satellite%20p20-25.pdf

Jan 20, 2010 | Computers & Internet

2 Answers

I have an HP touchsmart IQ790uk, error message: cpu fan failed


The fan is attached to the heat-sink and can be removed/unscrewed off the heatsink. Take the fan to the computer or elecronics hobby shop for a replacement fan.
The are after-market CPU heat-sink fan assemblies available (these usually provide better cooling than the original units), just remove the existing assembly and take it to your friendly computer shop for a suitable replacement.

Nov 17, 2009 | HP Computers & Internet

1 Answer

I need to repair a noisy fan on nvidia graphics card... any ideas?


Remove the Fan assembly only and replace the entire plastic casing along with the fan preferably by the some manufacturer of the MB....sodeep

Mar 20, 2009 | HP Hewlett Packard Pavilion S3530F Phenom...

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