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XPS 13 9380 Display Backlight Not working
I got a new XPS 13, and as I was setting up my new laptop, my old XPS 13 9380 display failed. External screens work with no issues so it can't be the graphics card. I can see barely see the screen. Most things are too dark to make out
I ended up buying a new display assuming the issue was with the display but no change.
Has anyone else had this issue? When I called an unofficial tech support they said it could cost £250 which was the price I paid for the spare screen.
I found this but I did no update to the firmware when it happened: https://www.dell.com/community/XPS/XPS-9380-doesn-t-turn-on-after-update/m-p/7561842
I've always had some screen flickering issue but I guess it's not related: https://www.dell.com/community/XPS/XPS-9380-screen-flicker/m-p/8037048
Any help is appreciated.
ejn63
10 Elder
10 Elder
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24.5K Posts
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November 11th, 2021 12:00
Chances are the power supply to the backlight is the issue - which isn't a repairable part. The only solution is to replace the system board.
If they're quoting an all-in price (which I doubt), that's a bargain -- the board alone goes for $500-600+.
https://www.parts-people.com/index.php?action=category&id=143&subid=1306&refine=motherboard
U2CAMEB4ME
4 Operator
4 Operator
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6.2K Posts
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November 11th, 2021 12:00
Welcome to the Dell Community @oradwell
Hold down the "D" key, push the power button, release the power button, wait 2-3 seconds and release the "D" key
The laptop should go through an LCD test of solid White, Red, Green, Blue and Black 2 or 3 times.
After completion it should try to automatically boot 2 or 3 times.
Post any results.
Best regards,
U2
oradwell
3 Posts
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November 11th, 2021 14:00
@ejn63yeah it doesn't sound like an easy fix
@U2CAMEB4MEself test has the same issue. no backlight. is it supposed to show anything after?
U2CAMEB4ME
4 Operator
4 Operator
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6.2K Posts
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November 11th, 2021 15:00
@oradwell
It should just go through the full screen color test, then try to boot like normal.
Did you notice any change in the background during the test???
It could be ever so slight.
That would tell you that the "Video" signal is reaching the LCD.
But as you say there was no change.
That would then indicate that the LCD power circutry on the system board is bad or the cable from the system board going to the LCD???
Have you tried the cable yet???
Regards,
U2
oradwell
3 Posts
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November 15th, 2021 00:00
@U2CAMEB4MEthanks for trying to help. I know that video signal reaches the LCD because I am able to see the BIOS (because it's very bright compared to other screens) when I go into it. It's very dark but because the BIOS screens are very bright normally I can make out the options.
I ended up giving it to a repair shop. They replaced a tiny chip and it was good again. The cost was £340 though.
https://www.creativeit.tv/
JSobreira
1 Message
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October 4th, 2022 02:00
Hi brother, I have the same problem. Do you remember the chip reference?
thks