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Acer Aspire M5640 Motherboard Layout (power issue)

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August 20, 2009 6:22:17 PM

I was wondering if anyone has a motherboard schematic for and Acer Aspire M5640. I think am having some power switch problems and i want to make sure I plugged the cable back in to the right spot. Anyone a certafied Acer tech? I would love to bounce a couple questions off you if possible.

More about : acer aspire m5640 motherboard layout power issue

August 21, 2009 6:28:34 PM

I purchased the service manual. If anyone would like this SM. Shoot me a message and I can email it to you :-)
October 3, 2009 12:20:41 AM

I just emailed a batch of people the Manual. Let me know if there are others.
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Anonymous
a b V Motherboard
October 22, 2009 1:46:28 AM

my friend has the m5640 and his motherboard tool a crap and he is trying to figure out the pinouts for the case to hook up a new motherboard could you send the manual to me please thanks .
Anonymous
a b V Motherboard
November 9, 2009 9:05:42 PM

Same problem here: I've got power everywhere (power-on light and 'aspire' decoration on the casing shining bright&blue, HD blinks once at power-on, dvd-player gets juice, processor heats up, all fans blowing, both 4-pin and 24-pin power sources attached to the motherboard show appropriate voltage), but no POST beeb(s)--not fully clothed, not bare-boned, not out of the casing, not after a cosm reset.

Seems like a motherboard failure to me.

This is a 2 years old Acer Aspire m5640(-1R7E). Great setup at the time, but I expected it to last longer.
November 9, 2009 9:45:55 PM

did anyone get a copy of that manual? I'm having a heck of a time trying to get a hold of it. I need the wiring diagram for the front panel.
November 25, 2009 11:38:27 AM

Yah, I was having the same problem. I didn't even get a signal to the screen. My very first thought was, it has something to do with the video card. Ofcourse, it's integrated on my particular board. Well, i fixed the problem. I replaced the damn thing. $70.00 US. I personally think they put crap motherboards in these machines. I called Acer, who frickin sucks to talk to too becus they don't want to give out info. I called the service centers, this partially motherboard that I have, happens to be on back order. HMMM... wonder why. Anyway, I swapped the motherboard for one that matches up to the proper specs (memory, graphics, etc) and we're good to go. The wiring is the only thing I had to be careful with.

Kara

November 25, 2009 11:40:27 AM

Don't even try to buy a motherboard through Acer, $250 US.
November 25, 2009 2:09:58 PM

Thanks karaP. It reduces the number of options.
I think I'll have to change the motherboard also (still I need to be sure it is not the HD).
Which one did you choose?
Matching the exact specs is not easy, because there are 3 USB connectors, plus IEEE. The first price I found with these specs (and the other specs of ACER MB) is around 110€ (150USD).

Another question : what happens to the VIsta OEM licence sold with the computer? is it lost?
If yes, might be an opportunity to switch to Seven or Linux :bounce: 

thanks
November 25, 2009 4:45:52 PM

slave the HD to another computer. I bought a Asus motherboard and was very happy with it. Tech support is awesome. I would call the local tech repair shop and ask them what board would be compatible with your system. Luckily the board I bought matched up so well; I didn't need to reinstall the OS. I bought an ASUS P5N73-AM. The wiring for the front panel is different and it doesn't have firewire capabilities. You could probably call ASUS too and they could tell you what's a close match to your board but through them it may no be as cheap. Good Luck.
December 6, 2009 11:37:54 PM

I would like to get a copy of this manual if you can send it via a .pdf file, that would be great. Thanks.
December 7, 2009 5:32:10 PM

karaP said:
slave the HD to another computer. I bought a Asus motherboard and was very happy with it. Tech support is awesome. I would call the local tech repair shop and ask them what board would be compatible with your system. Luckily the board I bought matched up so well; I didn't need to reinstall the OS. I bought an ASUS P5N73-AM. The wiring for the front panel is different and it doesn't have firewire capabilities. You could probably call ASUS too and they could tell you what's a close match to your board but through them it may no be as cheap. Good Luck.


Hi!!
done!
I changed the motherboard by an ASUS P5Q-EM, and it works perfectly. I had to use knife and tools to "remodel" :whistle:  the front panel connector but its all ok now.
Only problem, the VIsta disk manager doesn't "see" my hard drive (although it's working properly, since it has the OS and all documents on it!).

Thanks again for your help
Stephane
December 15, 2009 1:04:06 PM

I don't have the wiring diagram. I never got an email from that guy. Sorry. Pop open the front panel. That should be the only rewiring you'll need to do.
December 20, 2009 8:58:12 PM

I just finished replacing the m5640 with a PCchips.. only thing windows 7 drivers, so beware to check availability of win7 drvrs. the manual I hve is not very technical just general stuff like the location of the mb usb blocks and panel1 and cmos reset..etc.. there was the problem with the pwer issue. came on then shutdown thru windows. then on again and nothing just a blinking power light. anybody experienced that one. Im not gving up on the mb , shopping for a cpu lga775 type.
later.
March 31, 2010 3:34:08 AM

Hey guys. Like most of you guys I am having the same problem. It turns on, fan is running everything powers up, but when it reaches the "starting windows" screen it freezes. Also it was the video card that died first. Well I'm thinking the mobo died and isn't reading the vcard. Just curious what solutions you guys came up with. I noticed the two ASUS mobos that others have gotten. Just curious if anyone else found other mobos that worked? Thanks for the help guys
a b V Motherboard
April 21, 2010 7:29:38 PM

Try booting with 1 RAM chip at a time.
April 22, 2010 4:31:29 PM

Thanks Aford10

This morning I tried with different power supply/hard drive/ram/monitor

I don's see no sign.

I have motherboard of the same brand they produce same result. when i switch them they share cpu or heat cinq. Do you think It has something to do with it.

No display on the screen!!!!!!
a b V Motherboard
April 22, 2010 4:46:30 PM

Double check and make sure the 4/8 pin CPU power is plugged in.

As long as the CPU and HSF isn't damaged, and you seated them right, they should be fine.
April 22, 2010 8:52:57 PM

Thank You...

Aford10

I knew the problem was around the CPU but couldn't figure it out. I took the CUP out again and relized they didn't put the chip under the fan loool wow. Although I wasted a day on this issue but was glad everything is over.

now i have to put back all the parts i took out from the computers. hmmmm

Thank again AFORD10
a b V Motherboard
April 22, 2010 8:55:11 PM

Glad to hear it's working.
April 29, 2010 8:21:26 PM

I know this thread should totally be archived right now, but I'm having the same issue with my Acer Aspire m5640 (as a lot of people seem to be).


I turn the machine on, the front panel lights up, the fan kicks on, and the dvd drive will open, but there's no signal to the monitor, keyboard, or mouse. Blah blah blah, no POST, you've heard it all before.


It's not the monitor. I've hooked the Acer up to an old monitor with the same result. I've hooked my lcd up to an old pc, and everything works fine. Same goes for the mouse and keyboard.


At first, I thought it was the power supply, but that's not the case. It tested fine for me. I even took it to a repair shop (because I was really really hoping it was just the power supply) and they said it was fine.


I switched the CMOS jumper around and took out the battery, neither of which changed a thing. I played Musical RAM Chips, to no avail. I reseated everything in the case. Still nothing.


I'm fairly certain at this point that the motherboard has gone rogue. There are no signs of anything being burned out on it, as someone on another thread suggested there would have to be if the mobo was the problem.


*sigh* Thus, I've been relegated to the ancient realm where RAM is measured in MB and solitaire is a strain on the CPU. Did I miss the news about Acer being absolute crap?


Anyway, that leads me to a three-part question:

1) Is this machine worth saving (considering all the problems this model is prone to) or am I better off moving on with my life?

2) If it is worth saving, should I go against my will and order a replacement board from Acer, or get a 'compatible' board?

3) That was probably a dumb question. If I get a new board, how can I find out what type of board will work, ideally without the use of a soldering iron on my part?

a b V Motherboard
April 29, 2010 10:13:18 PM

How was the power supply tested? Just because it's functional, doesn't mean it's enough to power your system.

Here's where I'd start. Unplug everything except the CPU/HSF, PSU, power switch, and 1 RAM chip. Try booting, and listen for the normal beep.

Onboard video, video card, or both?
April 30, 2010 9:39:31 PM

PSU was tested at the computer repair shop with a power supply tester. The owner was the first to suggest that was a board problem. I've never dealt with him before, so I'm not going to say his word is gospel. However, from what I can tell, he knows his stuff.

Tried your suggestion. Not even a beep.

Video is onboard.
a b V Motherboard
May 1, 2010 12:17:00 AM

Do you have a motherboard speaker?

If you've got the motherboard speaker, and still no beeps with that above setup, they're probably right. It's likely a bad board.

It's probably best sold for parts/repair. I wouldn't order a replacement board. If you want to keep it, you could order a better board, CPU, and RAM. It'd be a relatively cheap upgrade/project PC.
May 1, 2010 12:37:08 AM

ncupery said:
I purchased the service manual. If anyone would like this SM. Shoot me a message and I can email it to you :-)

I could use this info front panle terminal prblem
Anonymous
a b V Motherboard
May 10, 2010 5:15:01 PM

ncupery said:
I purchased the service manual. If anyone would like this SM. Shoot me a message and I can email it to you :-)



would love to have a copy for mu acer also am having video problems.

Thanks
May 17, 2010 3:09:14 AM

ncupery said:
I purchased the service manual. If anyone would like this SM. Shoot me a message and I can email it to you :-)


Thank you! I'd appreciate a copy emailed to me at scott728@hotmail.com I have an Acer Aspire M5640 U5401 that's only 2 years old and it suddenly wouldn't boot up. Geek Squad at Best Buy reseated the RAM, etc. and did a diagnostic test and told me the motherboard was bad. I'd like to try to tackle the replacement myself if I can find the replacement board. Anyone know where to start looking for a good source online? Thanks, again! Jim
May 23, 2010 5:46:48 PM

I am having the same problem with an Acer Aspire M5640. Took the motherboard out of the case to ensure there were no shorts caused by bad mounting. Removed PSU and tested with voltmeter, all OK.

Hooked PSU to mobo on the bench and plugged in monitor and speakers. Using POSTCODEMASTER diagnostic card plugged into PCI slot. Started machine, no POST, no beep. PCI diagnostic card says "RESET", indicated by code -- (two dashes on display).

Does anybody know what that means? It sounds as if the reset button is permanently pressed, except there is no reset button on the case, and the mobo is out of the case.

I am now considering replacing the motherboard with a refurbished GIGABYTE G31M-ES2L.

Thanks in advance for any advice or suggestions.
dancro
Anonymous
a b V Motherboard
May 28, 2010 8:50:55 PM

ncupery said:
I purchased the service manual. If anyone would like this SM. Shoot me a message and I can email it to you :-)



would love to have a copy of the service manual as my acer is doing the same thing as the others are.

Thanks in advance. L. Rivers
May 29, 2010 3:16:55 AM

I do not know if this is the problem anyone is talking about, but here is my experience:


About two years after i bought the Acer Aspire M5640 Desktop PC for $200, i started to notice that once in a while it would randomly start, then stop then start again. After further investigations, i realized that the power switch was not connected fully to the cable that ran from the motherboard. To fix this, i removed both sides of the PC (unscrewing all screws and pressing firmly on the side plate then sliding it off. On the access side, you have to release a black lock towards the bottom. I then carefully removed the front plate of the PC, being careful not to yank to hard and permanently break the PC. (The power should be off before you do anything to the PC.) I then slowly pushed the PWR SWITCH back onto the two metal strips that came out of the power button. (If your PC is not turning on at all, then i would check to make sure that this is secured, also make sure that all your big cords and power wires are connected correctly to the motherboard. If not it is either a faulty connection issue or a bad power supply.) I then placed the front panel back on and the two side panels, (very simple) and then wala! It now has no power problems at all!

Acer Aspire AM5640-U5403A Specifications:
http://support.acer.com/acerpanam/desktop/0000/Acer/Asp...

Acer Aspire AM5640-U5403A Driver & Downloads:
http://support.acer.com/us/en/drivers_download.aspx

Acer Aspire AM5640-U5403A Manuals:
User Manual:

http://global-download.acer.com/GDFiles/Document/User%2...

Generic User Guide:

http://global-download.acer.com/GDFiles/Document/Generi...


-Tristian7Fire-

Leading the Next World in Prized Innovation


Anonymous
a b V Motherboard
June 12, 2010 3:49:32 AM

ncupery said:
I purchased the service manual. If anyone would like this SM. Shoot me a message and I can email it to you :-)


Hello my name is Ruben can you e-mail me the service manual please? thanks,
June 21, 2010 5:10:42 PM

Anybody find a solution to this problem? I have a Acer M5640 that just did the same thing as everyone is saying here. It powers on but no POST screen. Looking at the motherboard I seen that the backside is discolored brown by the memory slots, specifically under Q5 and Q32 FETs. These FETs are located between the memory slots and the ATX power connector. This would point towards the FETs overheating for some reason. These FETs could be the cause of the failure or a victim of some other component failure. Does anyone have the same observation on their MB? Anybody been able to get any help fixing their boards?
June 25, 2010 2:53:54 PM

ncupery said:
I purchased the service manual. If anyone would like this SM. Shoot me a message and I can email it to you :-)


Hi,
Same damn problem everyone has here.
Would really appreciate a copy of SM.

Thanks!

Also i noticed that my original acer (AM5640-U5403A) front panel connector is 14 pin female and the new mobo I have (BIOSTAR G41-M7) has 16 pin male front panel connector. So I would think I have to get a new plastic 16 pin connector part and wire it correctly.
I have never changed mobos before and ANY HELP IS GREATLY APPRECIATED!
THANKS!!!
Marius
July 17, 2010 1:55:58 PM

ncupery:
I have some problem in writing a reply,sorry.

Would you please send me a copy of manual?
a b V Motherboard
September 25, 2010 3:32:03 AM

This topic has been closed by Mousemonkey
!