Acer Aspire 5742 Cooling Fan Replacement

Geschrieben von: Claudia Torres

Kommentare: 6

Acer Aspire 5742 Cooling Fan Replacement

Schwierigkeitsgrad

Moderate

Schritte

Zeitaufwand

30 Minuten - 1 Stunde

Einleitung

One of the most common issues with laptops is overheating because the cooling fan or cooling vanes are clogged with dust or the fan is not running properly. Replacing this is moderately difficult due to the fact you have to remove so much to get to it.

Use of an anti-static wrist wrap is highly recommended. Take care not to use too much force especially for the zero insertion force ribbon cables.

Werkzeuge

Schritt 1

Move the battery catch to the "unlocked" position.
Pull back the second spring-loaded battery catch until the battery pops up.
Remove the battery.

Schritt 2

Turn the notebook around to face you.
There are two Phillips #00 screws securing the cover panel to the rest of the notebook. Remove these screws.

Schritt 3

Use a spudger to release the panel from the plastic retaining clips keeping it in place.
Do not apply too much force, or you may break the clips.
Remove the panel and set it aside.

Schritt 4

Unscrew the Phillips #00 screw which retains the hard drive in place.
Gently slide the hard drive to the left in order to disengage the SATA connectors.
It may be quite stiff, in which case you can ease the hard drive out of the SATA connectors by inserting a spudger between the hard drive and the connector block.
Lift the drive out of the notebook.

Schritt 5

The RAM is protected by a transparent cellophane cover.
Lift this cover away from the RAM. It will not come free from the RAM.
You may wish to use some Scotch tape to hold the cover in place while you work.

Schritt 6

Pull back the retaining clips either side of the RAM.
It will spring up, ready to be removed.

Schritt 7

Hold on to opposite edges of the RAM chip and gently pull it diagonally upwards to remove it from the computer.
Repeat steps 5 and 6 for the second RAM chip if necessary.

Schritt 8

When reinserting RAM, push it diagonally downwards until almost all of the gold connector strip is inside the socket.
Push gently down on the RAM until the retaining clips click back over it.

Schritt 9

The WLAN card is protected by a transparent cellophane cover.
Lift this cover away from the WLAN card. It will not come free from the WLAN card socket.
You may wish to use some Scotch tape to hold the cover in place while you work.

Schritt 10

Use the pointy end of a spudger to remove the antenna connectors from the WLAN card.

Schritt 11

You may find it useful to pull the antenna cables out from under the plastic retaining clip so you can move them out of the way while you work.

Schritt 12

There is one Phillips #00 screw keeping the WLAN card attached to the notebook.
Remove this screw.
The WLAN card will spring up from the notebook at an angle.

Schritt 13

Just like RAM, hold the WLAN card by the edges and pull it out at an angle.

Schritt 14

When you're installing the new WLAN card, you might want to hold it down with one hand while you put the screw in with the other.
You might also want to put the antenna cables back in using the flat end of a spudger.

Schritt 15

Unfold the laptop so that you are looking at the keyboard.
At the top right of the keyboard you will notice two clips above the 'Del' and 'End' keys.
Using your spudger, press these clips in to unlock the keyboard from the laptop
Be careful not to press too forcefully on these clips with the spudger as they may break
Slide the spudger along the top of the keyboard until the keyboard is able to easily be lifted up out of the laptop
Do NOT attempt to fully remove the keyboard as there is still a cable on its backside connected to the computer that can be damaged

Schritt 16

Now that the keyboard is outside of the laptop, you will see a ribbon cable coming from the back of the keyboard connected to the laptop.
To detach this cable you must use the pointed edge of the spudger to press down on the locking mechanisms on each side.
Do not use too much pressure when disconnecting the ZIF connector.
After unlocking both sides of the ZIF connector remove the keyboard for replacement.

Schritt 17

Remove the 10 Phillips #0 screws on the bottom cover.
Remove the 4 Phillips #00 screws from under the battery.

Schritt 18

Remove the 8 Phillips #0 screws from under the keyboard.

Schritt 19

Release the two ribbon cables from the ZIF connectors in the same fashion as in Step 11 with the black spudger.
Once the mechanism is released you may remove the cable by hand.
The plastic cover can now be easily lifted and removed from the rest of the laptop.

Schritt 20

Remove the two remaining ribbon cables as described in Step 11.

Schritt 21

Remove the display cable with the spudger by pushing each end of the cable out of the connector until it is loose enough to be pulled out by hand.
In a similar fashion as with the display cable use the spudger to remove the two power cables from the motherboard.

Schritt 22

Remove the 3 Phillips #0 screws from the fan bracket.
Lift the fan up and place it back down above the heatsink.
Do not fully remove the motherboard. As there is hidden cable on the underside that could be damaged.
The heatsink has a strip of adhesive on the underside securing it to the plastic body.
The motherboard can be lifted from the side and and then to the right to free the I/O port from the enclosure. Some force may be required to release the heatsink.

Can you help me out? I’m having trouble lifting up the fan. It seems to be stuck to the metal part near the vent on the side and I can’t figure out how to lift it, Any tips?

Diego Rios - 27/03/18

I broke my touch pad zip connecter .Then what can i do ?

Muhammad Ayub Zahid - 07/05/21

If it’s the locking bar that’s broken you can sometimes wedge some packing into the connector to enable it to make a good connection with the ribbon. A proper fix would be to fit a new connector, but that would require microsoldering skills which I guess you don’t have. It’s possible you could find a repair shop that could undertake it - quite easy with the right equipment and skills. Undoubtedly the easiest thing is just to forget about the touch pad and use an external mouse instead - many people prefer it anyway.

Philip Le Riche - 07/05/21

Schritt 23

Rotate the motherboard to the right and lay it down so that the copper heatsink is facing up and parallel with the bottom of the monitor.
In this position the last cable to the motherboard can be disconnected using the spudger to push each end out until loose enough to pull the cable completely out.
The motherboard can now be completely removed from the laptop enclosure.

Schritt 24

Disconect the fan power cable using the spudger to push the connector out.
Remove the fan for replacement or cleaning.

Abschluss

To reassemble your device, follow these instructions in reverse order.

Tinte & Feder

Claudia Torres

Mitglied seit: 21/10/16

818 Reputation

3 Kommentare

Super guidance…very useful for me..Thank u.

Rajesh P - 07/01/18

Fantastic guide - thanks so much!!! Mine was a little bit different than yours though:

In step 3, there’s another screw parallel to the hard drive tray screw that holds the top case to the bottom that also needs to come out

In step 13, you also need to unplug the blue and white microphone cable (near the top center screw), not in Step 16 (short wire)

Andrew - 28/04/18

Brilliant guide………….thanks so much ! My laptop kept turning its self off randomly because the fan was so clogged up with dust and fibers. Its now running so cool and problem solved. A great easy to follow idiot guide for the first timers like me. Only took about 45 mins from start to finish. Many many thanks.

Richartd Taylor - 24/01/19