Acer Swift 3 (SF314-52G-56AL) No Display

TanChor
TanChor Member Posts: 8 New User
edited November 2023 in 2020 Archives
I have an Acer Swift 3 (SF314-52G-56AL) No Display.  When I open the laptop and notice that the motherboard IC is burnt.  Please refer to the image.  This IC is near the connector connecting to the display.  The burnt IC was caused by corrosion due to water entering the motherboard.  This IC is 5-pin.  Anyone knows what is the specification of this IC?

Answers

  • JackE
    JackE ACE Posts: 45,213 Trailblazer
    edited May 2020
    That chip & its connectors look OK. Just some evaporated spill residue on top. If the screen didn't immediately or shortly thereafter quit when the spill happened,  I would guess the video cable connector either needs to be reseated a few times to clean its contacts or, if you have a habit of opening & closing the lid too much, the cable probably needs to be replaced due to wear and tear on its conductor traces which can crack in the hinge area. Jack E/NJ  PS: You might want to dab the chip and connectors with a q-tip soaked in rubbing alcohol to try to clean up the residue.


    Jack E/NJ

  • TanChor
    TanChor Member Posts: 8 New User
    The top of the 5-pin chip is already stripped off.  What you see on the top is the internal metallic part of the chip.  I think it's probably an overload that cause the chip top plastic to be blown off.  Still hoping to find out what is the part number of the chip.
  • JackE
    JackE ACE Posts: 45,213 Trailblazer
    Those motherboard details are usually unavailable on these users forums. If you can find any ID numbers imprinted on the motherboard, we can sometimes identify the component. Several mainboards were used in this particular model as shown below. Perhaps you can identify which one you have and do a google search by the part number or description to find a schematic of the component. However, if the component has failed catastrophically, it is likely other mainboard components have been compromised as well. That is, if you replace it, it may still require more damaged components to be replaced. It might be more practical to replace the entire mainboard perhaps with a more powerful one. Jack E/NJ 


    Jack E/NJ

  • TanChor
    TanChor Member Posts: 8 New User
    I do not see any number on the motherboard.  Yes, you are right about the fault if it is still there will cause the chip to fail if reinstalled.  What is done is, the corrosion has cause some deposit and bridging of the connector at top of the chip.  The corrosion deposit are scratched at the connector pins and clean with isopropyl (alcohol).  Hopefully, that remove the cause of the failure.  So, I still need to install the right chip to see if the failure is still there. My suspicion, it that it is a switching (driver or load switch) that turns on the LED backlight that has failed, so there is no longer backlight control.  FYI, I am an experience electronic engineer, so I am familiar with hardware.  So, if you see similar circuit in other ACER models, it is likely applicable.  This model that I am using is a i5 model with MX150 display accelerator, with 8GB ram on the motherboard. 
  • JackE
    JackE ACE Posts: 45,213 Trailblazer
    >>>I am an experience electronic engineer, so I am familiar with hardware.>>>This model that I am using is a i5 model with MX150 display accelerator, with 8GB ram on the motherboard.>>>

    That looks like the part # "NB.GQ911.004" as shown below. Unless some forum user here is willing to inspect their own mainboard component, I suggest a google search via 'he4ea motherboard' might be more productive in getting an insight to that particular component.

    You can apparently order a PDF board schematic from a third party such as http://www.laptop-schematics.com/view/10463/
      Sorry, I don't have any special access to such PDFs

    Jack E/NJ




    Jack E/NJ

  • TanChor
    TanChor Member Posts: 8 New User
    The SF314-52G is different from SF314-52.  SF314-52G comes with a MX150 graphic accelerator while the SF314-52 only has a intel graphic display, so the PCBA layout is quite different.
  • TanChor
    TanChor Member Posts: 8 New User
    Hi Jack E, Thanks for the reference to the motherboard schematic.  I may need to go that route but I am not sure if the schematic is accurate, so I am reluctant to spent the money.  Have you used them before?
  • JackE
    JackE ACE Posts: 45,213 Trailblazer
    You should confirm with them first via this email link http://laptop-schematics.com/contact/ that it is in fact the discrete board schematic. Jack E/NJ

    Jack E/NJ