My Acer N50-620 won't power on. The power switch does nothing. No Lights no fan.

williep
williep Member Posts: 13

Tinkerer

I turned it off with shut down app on screen and it will not power up.

Best Answer

  • JackE
    JackE ACE Posts: 44,473 Trailblazer
    edited March 1 Answer ✓

    Without further disassembly, can you see the upper right front power button wires and connector to the mainboard?

    Jack E/NJ

Answers

  • JackE
    JackE ACE Posts: 44,473 Trailblazer

    Unplug power cable from wall socket. Then unplug other end of power cable from desktop, then push it firmly back in. The plug power cable back into the wall socket. Try to turn it on again.

    Jack E/NJ

  • williep
    williep Member Posts: 13

    Tinkerer

    Thanks, I already tried that .

  • JackE
    JackE ACE Posts: 44,473 Trailblazer

    Did plug something else into wall socket to make sure it's live? Check to see if your power supply has a red reset button.

    Jack E/NJ

  • williep
    williep Member Posts: 13

    Tinkerer

    Thanks Jack. The sockets read 120vac . I looked at the PS module and didn't see any buttons or fuses. I would like to get a schematic of the power supply to see how it actually turns on and off ( you can turn it off on the display as well as the switch). I would like to see how the on / off switch works.

  • JackE
    JackE ACE Posts: 44,473 Trailblazer

    Check again especially if you can see the entire backside of the power supply. Also with the power cable unplugged, move the 120/240 voltage slider switch back & forth a few times to help its contacts.

    Jack E/NJ

  • William_mk2
    William_mk2 Ally Posts: 4,084

    @williep

    Try these basic steps as you are using a Acer PC. 

    Turn off the computer.
    Unplug all the devices and cables including power cable. 
    Press and hold the power button for 45 seconds. 
    Connect all the cables back.    Please connect the power cable as the last one.  

    Turn on the computer
    Tap del 
    Go to bios
    press f9 - Load defaults - press yes
    press f10 - save the changes - press yes

    Computer should load the windows .. 

    If it is still not working try the computer in a different room on a different power outlet.

    Try to bypass the surge protector and connect it directly to the power outlet

    If it is still not working you might have to open the computer, reseat all the cables and components and connect it back. Please unplug the cables to turn off the computer and then reseat the cables and components.

    Click on "Like" if you find my answer useful 

    Click on "Yes" if it answers your question.


    Please click YES if I answered your question

    I am not an ACER employee
    B  Thank you and have a BLESSED AND HAPPY DAY  B


                                         ★★ WILLIAM - MRK ★★

  • williep
    williep Member Posts: 13

    Tinkerer

    edited February 29

    Hi Jack, These are photos of back side +model tags. No buttons or sliders, Thanks Bill

    [Edited the thread to hide sensitive content]

  • JackE
    JackE ACE Posts: 44,473 Trailblazer

    Sorry, no, I meant the backside of the power supply, not the case back. The side panel would have to be removed. Remove 2 screws and slide panel back to remove.

    Jack E/NJ

  • williep
    williep Member Posts: 13

    Tinkerer

    Thanks Jack, I'll give it a try this afternoon. I have to go out this AM. I'll tell you how I make out.

  • JackE
    JackE ACE Posts: 44,473 Trailblazer

    OK. Jack E/NJ

    Jack E/NJ

  • williep
    williep Member Posts: 13

    Tinkerer

    Hi Jack, I did get to open the computer and remove the power supply module. I opened it up and didn't find any buttons or switches but I did find a fuse (8amp 250volt) that measured OK. (short). I tightened the connector on cable from the on off switch which was no help. I bought this computer from Sams in Dec 22 and had to send it back to Acer after a month this because it would shut down if it was idle for 3 minutes. They replaced the mother board. Now after a year this happens. I don't think it qualifies for a warranty repair but it doesn't build confidence in their quality. Thanks for your help. I open to any suggestions, Bill

  • JackE
    JackE ACE Posts: 44,473 Trailblazer
    edited March 1 Answer ✓

    Without further disassembly, can you see the upper right front power button wires and connector to the mainboard?

    Jack E/NJ

  • williep
    williep Member Posts: 13

    Tinkerer

    I did see the cable that goes from the switch to the mother board. 4 wires (not sure why they need 4 wires ) but I did remove and replace it to make sure the connections are made. ( It's the cable on the upper left of the photo) Thanks, Bill

  • JackE
    JackE ACE Posts: 44,473 Trailblazer

    OK. Two LED wires. A power-on signal wire. A power-off signal wire. Are those the only 4 wires from the power button?

    Jack E/NJ

  • williep
    williep Member Posts: 13

    Tinkerer

    So that means that the on-off circuitry is on the mother board. It has to be turned on by the switch, but it can be turned off by the shut down circuitry or the power switch. So the power supply is turned on via the logic circuitry on the mother board. It would be nice if there was an override. I think that I may have to return it to Acer and pay the price for not buying the extended warranty. Can the Geeks repair Acers? Thanks, Bill

  • JackE
    JackE ACE Posts: 44,473 Trailblazer

    Try re-seating the other mainboard connectors from the power supply if you haven't done so already.

    Since BB sells Acer products, the squad might do more than just software troubleshooting. Depends on the squad near you. You'll just have to ask them.

    Jack E/NJ

  • williep
    williep Member Posts: 13

    Tinkerer

    Actually, the PC was working ok until we got a knock on the door from a guy from the Power Company who said that he had to change our power meter so the power would be off for a few seconds. I clicked the shut down button on the screen and shut down the computer. After that, it never turned on again. My son said that it was properly caused by the power surge when he put the power back on. I said that the PC power supply was surge protected and the supply was made to operate in unsteady line regulation. I repaired test equipment for Raytheon for 40 years and never saw a piece of test equipment taken out due to a line surge. But he is a Colonel in the Army and I was the Engineer. But, I had to admit that the timing was too coincidental. A voltage spike could have wiped out some logic circuitry and left the fuse and the surge protection intact. Not very likely, but I am very suspicious of coincidences. Besides, if he is right, I will never hear end of it.☺️

  • JackE
    JackE ACE Posts: 44,473 Trailblazer

    > >shut down the computer. After that, it never turned on again.> >

    Agreed. Surge unlikely. Without access to the proprietary mainboard schematics, I'd be tempted to play around with the 4 wires from the power button with a multimeter to see what happens to resistance between them when button is pushed. Could be the switch itself.

    Jack E/NJ

  • williep
    williep Member Posts: 13

    Tinkerer

    I played around with the 4 wires on the switch. wire 1+2 get continuity when the switch is pressed however wires 3+4 have no continuity to each other or 1+2 when the switch is pressed or open. I have no idea what their function is. But I assume the switch is working because 1+2 are connecting when the switch is pressed. I guess I'll have to return the unit to Acer or BB ( if they troubleshoot hardware) but it will have to wait until the last week of March because I am in FL for the winter but I have to go back to MA for 3 weeks starting next week. I let you know what happens when I get back. It will properly wind up being cheaper to buy a new unit. Thanks, Bill

  • JackE
    JackE ACE Posts: 44,473 Trailblazer

    > > I let you know what happens when I get back. > >

    OK. Good luck with the BB geeks.

    Jack E/NJ