Acer Nitro 5 AN515-53-55G9 no back-light/screen is black fix?

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Answers

  • Remytime
    Remytime Member Posts: 19 Troubleshooter
    egydiocoelho said:
    Your motherboard is the dh53f of which revision?
    Revision 1A
  • Commodore_1995#
    Commodore_1995# ACE Posts: 98,327 Trailblazer
    Have you tried disconnecting the lithium battery and pressing the power button for thirty seconds?
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  • Remytime
    Remytime Member Posts: 19 Troubleshooter
    egydiocoelho said:
    Have you tried disconnecting the lithium battery and pressing the power button for thirty seconds?
    yep tried that and nothing happened. I just hope it's nothing motherboard related and just a bad charging port.
  • JackE
    JackE ACE Posts: 44,897 Trailblazer
    >>>no i didn't disconnect the Lithium battery before the edp cable,>>>

    Was the spring-loaded safety interlock switch still in the "on" position ( depressed) when you changed the cable? Jack E/NJ

    Jack E/NJ

  • Remytime
    Remytime Member Posts: 19 Troubleshooter
    JackE said:
    >>>no i didn't disconnect the Lithium battery before the edp cable,>>>

    Was the spring-loaded safety interlock switch still in the "on" position ( depressed) when you changed the cable? Jack E/NJ
    im not sure where that is located on the laptop.
  • JackE
    JackE ACE Posts: 44,897 Trailblazer
    The white enscribed square in @egydiocoelho 's post to you just below the RAM modules. https://community.acer.com/en/discussion/comment/781098/#Comment_781098

    If that spring-loaded switch was still pressed down to the "on" position, full battery power would've reached many points on the mainboard even though the machine was turned off. One of those points is a pin on the edp connector to the backlight inverter board at the base of the LCD screen.  

    Jack E/NJ


    Jack E/NJ

  • Remytime
    Remytime Member Posts: 19 Troubleshooter
    JackE said:
    The white enscribed square in @egydiocoelho 's post to you just below the RAM modules. https://community.acer.com/en/discussion/comment/781098/#Comment_781098

    If that spring-loaded switch was still pressed down to the "on" position, full battery power would've reached many points on the mainboard even though the machine was turned off. One of those points is a pin on the edp connector to the backlight inverter board at the base of the LCD screen.  

    Jack E/NJ


    i don't think it was pressed down always but i may have pressed it too much. And it's not stuck or anything at on.
  • JackE
    JackE ACE Posts: 44,897 Trailblazer
    Some LCDs have a built-in backlight board. Some have a separate inexpensive replaceable backlight board. The video cable from the mainboard plugs into it.  Do you see a separate board? Jack E/NJ

    Jack E/NJ

  • Remytime
    Remytime Member Posts: 19 Troubleshooter
    JackE said:
    Some LCDs have a built-in backlight board. Some have a separate inexpensive replaceable backlight board. The video cable from the mainboard plugs into it.  Do you see a separate board? Jack E/NJ
    no the LCD is connected straight to the motherboard and the backlight is built into the LCD. i can give you an example of it by plugging in my Acer Nitro 5 panel to some Portable Monitor Main board.
  • JackE
    JackE ACE Posts: 44,897 Trailblazer
    >>>i can give you an example of it by plugging in my Acer Nitro 5 panel to some Portable Monitor Main board. >>>

    You mean it still turns on with screen images but with no backlight to see them without a flashlight? Jack E/NJ

    Jack E/NJ

  • Remytime
    Remytime Member Posts: 19 Troubleshooter
    edited January 2020
    JackE said:
    >>>i can give you an example of it by plugging in my Acer Nitro 5 panel to some Portable Monitor Main board. >>>

    You mean it still turns on with screen images but with no backlight to see them without a flashlight? Jack E/NJ
    yes, it still turns on but has no backlight and i have to shine a flashlight behind it to even see what is being displayed. Well i would say that it turns on but now the computer refuses to turn on and refuses to even charge and i think either the battery died or the my laptop died completely.
  • JackE
    JackE ACE Posts: 44,897 Trailblazer
    >>>computer refuses to turn on and refuses to even charge and i think either the battery died or the my laptop died completely.>>>

    No LEDs lit? Safety switch fully depressed? Battery switch fully un-depressed.  How about unplugging the battery to see if it'll run on charger alone? Anyway, If you can get it to turn on, a non-touch FHD replacement is only about $55. Jack E/NJ







    Jack E/NJ

  • Remytime
    Remytime Member Posts: 19 Troubleshooter
    JackE said:
    >>>computer refuses to turn on and refuses to even charge and i think either the battery died or the my laptop died completely.>>>

    No LEDs lit? Safety switch fully depressed? Battery switch fully un-depressed.  How about unplugging the battery to see if it'll run on charger alone? Anyway, If you can get it to turn on, a non-touch FHD replacement is only about $55. Jack E/NJ







    No that didn't work at all so my laptop is possibly dead.
  • JackE
    JackE ACE Posts: 44,897 Trailblazer
    Sounds like the mainboard was still OK at least when you could still see images with a flashlight. That would've been a $55 fix. But now that the machine won't even turn on,. I fear that the battery safety switch might've been in the "on' position at least part of the time when the machine was opened up. Possibly some connections were hot-plugged that weren't meant to be so or a hot pin momentarily touched ground? Jack E/NJ

    Jack E/NJ

  • Remytime
    Remytime Member Posts: 19 Troubleshooter
    JackE said:
    Sounds like the mainboard was still OK at least when you could still see images with a flashlight. That would've been a $55 fix. But now that the machine won't even turn on,. I fear that the battery safety switch might've been in the "on' position at least part of the time when the machine was opened up. Possibly some connections were hot-plugged that weren't meant to be so or a hot pin momentarily touched ground? Jack E/NJ

    the only thing that was hot plugged in was the Charger and the Portable USB monitor. I went to go do something and later half an hour i see that my computer was not turning on nor was it not showing the charging or power lights on the side.
  • JackE
    JackE ACE Posts: 44,897 Trailblazer
    No, I'm talking about when you initally fussed with the video cable. A mainboard component might've been weakened but not yet failed at the time. And finally gave up the ghost later on during the time you went to go do something. It's quite possible it might've be a solder ball or connection that let loose. The last resort in cases like this is a full mainboard reflow.  This can be done by baking the board on an aluminum foil cookie sheet for about 10 mins at 425*F in a pre-heated toaster oven. Jack E/NJ

    Jack E/NJ

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