Will the Acer M3641 take a standard ATX power supply? My PSU died.

RussellAcer
RussellAcer Member Posts: 2 New User

My M3641 won't start and it seems to have died while turned off.  It was plugged in and it started sparking and making loud pops.  I can't see any signs of shorting or damage inside the case, but I haven't removed or opened the power supply.  I'm thinking about replacing it, but I can't find any information on Acer sites that would clarify whether a standard ATX PSU would work or whether there are specific installation instructions that I need.  Does anyone out there know about this?  Thanks.

Best Answer

  • RussellAcer
    RussellAcer Member Posts: 2 New User
    Answer ✓

    OK, no answer here yet, so I had to make a decision.  I bought a ThermalTake TR2 430W ATX PSU (also shown on their website as W0070) and replaced the PSU in my M3641.  It cost me $25 (after rebate) at a local TigerDirect store (was CompUSA.)  I was shocked (no pun intended) at how simple it was to install.  I was also shocked that it seems to have worked immediately. 

     

    First I unplugged all power from the unit and held down the power on button on the front of the PC (per Acer instructions) to release any remaining electrical charge (or so they state.)  I removed the 4 screws from the old PSU and slid the box assembly out of the chassis while keeping all the wires connected.  I found the best orientation for the new PSU (the fan was not located in the same place, so the new PSU heat might be vented into the chassis, but the chassis is fairly open and if the fan is drawing from inside the PSU the air is coming from the back of the unit (reasonably cool air.)  This is the only way it would fit since the power cord attachment was on the draw side.  The old PSU had the fan and the power cord attachment on the same side aimed to the rear of the chassis.)  Note that it is possible that the fan is venting into the PSU and out the back.  I just don't know.  In any case, I had no choice as to the orientation.

     

    I unplugged one connector from the old PSU and replaced it by connecting the matching connector from the new PSU.  I did this step by step, one connector at a time, checking first to make sure that I knew exactly where the connector was attached and what the orientation was.  In each case I checked to make sure that the color coding of the wires matched.  In a couple of cases there was an extra wire on the new connector, but all the others were matching in color and orientation.  I had a 4 pin square connection that didn't match the shape of any new connector, but the new PSU had an 8 pin rectangle connector that split into two 4 pins and I attached one of those.  The main connector was 24 pins and the new PSU gave me a 20 or 24 pin option.  Again, no problem.  I noticed that one of the connections of the old PSU was actually two separate connections on one cable, so I simply repeated that with the new PSU which included two multi-connector cables just for such a purpose.  I used one of those for the two connections (to the hard drive, I think) and the other one for a single connection, probably for the optical drive.

     

    The old PSU was now completely detached.

     

    After checking that all the screws and connectors were secure, replacing the chassis panel and making sure that the PC was properly put back together, I plugged in the PC end of the power cable that came with the new PSU with the power supply switch off.  Then I plugged the other end of the power cable into my APC backup PS.  No explosions yet, so I switched the new PC power supply on/off button to on.  Still no sparks, so I pressed the on button on the front of the PC and voila, it lit up and booted.  All appears to be well.  It seems to be working normally.  If I run into any problems, such as overheating, I will update this post.

     

     

Answers

  • RussellAcer
    RussellAcer Member Posts: 2 New User
    Answer ✓

    OK, no answer here yet, so I had to make a decision.  I bought a ThermalTake TR2 430W ATX PSU (also shown on their website as W0070) and replaced the PSU in my M3641.  It cost me $25 (after rebate) at a local TigerDirect store (was CompUSA.)  I was shocked (no pun intended) at how simple it was to install.  I was also shocked that it seems to have worked immediately. 

     

    First I unplugged all power from the unit and held down the power on button on the front of the PC (per Acer instructions) to release any remaining electrical charge (or so they state.)  I removed the 4 screws from the old PSU and slid the box assembly out of the chassis while keeping all the wires connected.  I found the best orientation for the new PSU (the fan was not located in the same place, so the new PSU heat might be vented into the chassis, but the chassis is fairly open and if the fan is drawing from inside the PSU the air is coming from the back of the unit (reasonably cool air.)  This is the only way it would fit since the power cord attachment was on the draw side.  The old PSU had the fan and the power cord attachment on the same side aimed to the rear of the chassis.)  Note that it is possible that the fan is venting into the PSU and out the back.  I just don't know.  In any case, I had no choice as to the orientation.

     

    I unplugged one connector from the old PSU and replaced it by connecting the matching connector from the new PSU.  I did this step by step, one connector at a time, checking first to make sure that I knew exactly where the connector was attached and what the orientation was.  In each case I checked to make sure that the color coding of the wires matched.  In a couple of cases there was an extra wire on the new connector, but all the others were matching in color and orientation.  I had a 4 pin square connection that didn't match the shape of any new connector, but the new PSU had an 8 pin rectangle connector that split into two 4 pins and I attached one of those.  The main connector was 24 pins and the new PSU gave me a 20 or 24 pin option.  Again, no problem.  I noticed that one of the connections of the old PSU was actually two separate connections on one cable, so I simply repeated that with the new PSU which included two multi-connector cables just for such a purpose.  I used one of those for the two connections (to the hard drive, I think) and the other one for a single connection, probably for the optical drive.

     

    The old PSU was now completely detached.

     

    After checking that all the screws and connectors were secure, replacing the chassis panel and making sure that the PC was properly put back together, I plugged in the PC end of the power cable that came with the new PSU with the power supply switch off.  Then I plugged the other end of the power cable into my APC backup PS.  No explosions yet, so I switched the new PC power supply on/off button to on.  Still no sparks, so I pressed the on button on the front of the PC and voila, it lit up and booted.  All appears to be well.  It seems to be working normally.  If I run into any problems, such as overheating, I will update this post.

     

     

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