Comments on: How to disassemble Acer Aspire 5742

By: Ravi

Ravi — Sun, 24 May 2020 04:12:25 +0000

In reply to Tech-wannabe. Hi Tech-wannabe I ran into the same problem as you- broke the left hinge mounting boss. Could you please let me know how you resolved it?

By: IML Tech

IML Tech — Mon, 09 Sep 2019 14:20:17 +0000

In reply to ioescu. Probably you have failing wireless card. I would try replacing it first.

By: ioescu

ioescu — Mon, 09 Sep 2019 10:09:28 +0000

Buna ziua,
Am probleme cu functia F3 activeaza/dezactiveaza wireless.
Cate o data activez inainte de a intra w7, alta data nu sau uneori intra automat in wireless.
Cand functia nu este activa nu gasesc adaptorul in Device manager, iar in activitate o gasesc.
Care este problema si cum o pot remedia.
Va multumesc.
Nonu

Hello,
I have problems with the function F3 activates / deactivates wireless.
Once I activate before entering w7, another time it doesn’t or sometimes it automatically goes into wireless.
When the function is not active I do not find the adapter in Device manager, and in activity I find it.
What is the problem and how can I remedy it.
Thank you.
nonu

By: Peter Bramwell

Peter Bramwell — Fri, 29 Apr 2016 16:00:29 +0000

Thanks for a terrific guide stripped it all down and cleaned the fan and reseated the heat sink I was having overheating shutdowns now works as good as ever. I fix my desktop PCs but never a laptop, but the step by step walk through made it straight forward. Thanks again…..brilliant

By: spotify95

spotify95 — Sun, 21 Feb 2016 14:39:34 +0000

@Bruce – In order to replace the fan, it looks like you’re going to need access to the motherboard. Meaning that, basically put, you’ll have to go through all of the dis-assembly points shown.

This is why I have decided not to look into the overheating problem my laptop has – it is also an Acer Aspire 5742 series. The 5742s are prone to getting very hot. And replacing the heatsink will result in having to get access to the motherboard.

Why are modern laptops so difficult to repair? When I repaired the fan/heatsink/thermal paste on my 8 year old Packard Bell MV46, all that was required was the removal of the back cover. No motherboard access required.

By: eric

eric — Thu, 14 Jan 2016 12:59:18 +0000

I have to replace the audio jack on my 5742acer aspire, but I can’t find one to buy anywhere. I have tried Ali Express twice and both times they sent me the wrong part. The add was for a jack for a 5742 with a picture, but what they send is a piece of plastic with no jack at all. I have got 50% refunds. Anyway the problem is finding a place to buy the jack for the motherboard. Help needed.

By: Bruce

Bruce — Thu, 07 Jan 2016 11:25:24 +0000

Hi
I only need to replace the fan – is it necessary to take out the hard drive, optical drive, etc from the other side of the laptop?
many thanks

By: Tech-wannabe

Tech-wannabe — Sat, 26 Dec 2015 00:42:32 +0000

Thanks for the guide , I donated you $10. ( my paypal is tied to a different email)
My victim is Acer 5742-7120. I have on alphabet character.
THINGS YOU DID NOT TELL ME
Do not open & close the cover/screen with some of the screws removed. open it & then leave it open. I closed the lid to return to work from the bottom. When I turned it back over & opened it, the hing mounting bosses on one side broke out of the bottom of the case 🙁
I loosened the hinge nut with a 7/32 nut driver, but case is broke. I may attempt a repair with epoxy if I ever have to go back into it.
I had to remove the fan, to remove the power port from the case, and remove the motherboard as the power cable plugs into the underside of the motherboard.
After removing the power cable, I checked it for continuity with my multi-meter, all wires “good”, plugged into power supply, all contacts had correct voltage. I unplugged power, used a large safety pin as a tool & bent the contacts on the motherboard end of the power cable down a little bit. re-assembled, that problem is solved. 🙂
You might want to leave the keyboard for last in the re assemble process, you can fire up the computer & make sure the connections are all working, before snapping the keyboard back in place. ( or, just remember to push the cable retainers back “in” before you call it done, saves taking the keyboard back off when the mouse & keyboard are unresponsive 🙂
Thanks again, & good luck to others … CE
PS .. If your machine is _exactly_ the same as mine, the power cable/toroid assembly is exactly 7 inches long. I took pictures, but don’t know how to upload.

By: alisson

alisson — Fri, 04 Sep 2015 03:04:37 +0000

Thanks my friends !!!!

By: Lois Schrier

Lois Schrier — Sat, 29 Aug 2015 22:02:01 +0000

I have a Acer#5742-6674.
It is getting very hot. Am I supposed to clean out the fan from dust?
How do I go about this?
THANKS!
Lois