• HP 14-dw1025ns Keyboard, touchpad and backlight do not respond

Danes je 9 April 2025, 14:54

HP 14-dw1025ns Keyboard, touchpad and backlight do not respond

 Pravila foruma: Klikni tukaj za prikaz pravil na forumu

  1. Naslov teme mora vsebovati: proizvajalca naprave, poln model in kratek opis okvare.
  2. Sporočilo teme mora vsebovati: oznako tiskanega vezja (v primeru popravil strojne opreme), razširjen opis okvare, kaj je bilo preverjeno, zamenjano in/ali izmerjeno, sklep in vprašanje. Če ne morete najti oznake tiskanega vezja, morate prebrati TO TEMO. Če še vedno ne najdete oznake, prosim objavite kakovostne fotografije obeh strani matične plošče - potrebno je odstraniti vse folije in module, ki bi lahko zakrivali te oznake.
  3. Pred objavo nove teme, preberite vse teme v podforumu USPOSABLJANJA, in naredite predhodno diagnostiko na podlagi vsebine teh usposabljanj.
  4. Nalaganje celotnih navodil/shem, BIOS / firmware datotek, ali objavljanje povezav, ki vodijo do drugih spletnih strani s takšnimi datotekami, je SROGO PREPOVEDANO. Lahko objavite le majhen del navodil/shem, ali povezavo na BIOS datoteko v podforumu NEVERIFICIRANE DATOTEKE BIOS/EFI. V eni temi ne smete objaviti več kot eno stran navodil/shem. Datoteka ne sme vsebovati vidnih žigov "zaupno",, e-poštnih naslovov ipd.
  5. V eni temi lahko opišete SAMO eno napravo. Za vsako drugo okvarjeno napravo morate odpreti novo temo.
  6. Zahteve za sheme, boardview, fotografije matičnih plošč, datoteke BIOS-a ali servisne priročnike za storitve NISO DOVOLJENE. Če želite vprašati za katero koli od teh, odprite novo temo v podforumu ZAHTEVA ZA DOKUMENTACIJO & DATOTEKO BIOS/EFI.

#1 HP 14-dw1025ns Keyboard, touchpad and backlight do not respond

Napisal/-a Zemog • 13 Januar 2025, 14:51
Hello everyone.
I have an HP 14-dw1025ns with motherboard 6050A3202801-MB-A02, which was working fine. After turning it off and on again, the screen backlight stopped working, and the keyboard and touchpad also stopped working.
If I connect it to an external screen, I have an image. And on the laptop screen I also have an image but without backlight.
The computer works without problems when connected to an external screen and with a mouse and keyboard via USB.
I have removed the motherboard, and I have visually inspected it but I don't see anything strange.
Through Windows, I have updated the BIOS to the latest version, but everything remains the same.
On the keyboard, the only key that responds is the power button
When the computer is working and turns off. If I try to turn it back on, it does not respond to the power button. You have to wait or hold the button down for a few seconds, release it and press it again. Or if I remove the battery and power and reconnect, then it responds immediately

Is it possible that a defective U300 is responsible for the 3 failures?

Re: HP 14-dw1025ns Keyboard, touchpad and backlight do not respond

Napisal/-a Google Adsense [BOT] • 13 Januar 2025, 14:51

#3 Re: HP 14-dw1025ns Keyboard, touchpad and backlight do not respond

Napisal/-a Zemog • 13 Januar 2025, 20:48
Pin 1 ... 3,32V
Pin 20 ... 13,20V
Pin 22 ... 3,3V
Pin 28 ... 3,3V
Pin 29 ... 3,3V
Pin 34 ... 3,3V

#4 Re: HP 14-dw1025ns Keyboard, touchpad and backlight do not respond

Napisal/-a Zemog • 16 Januar 2025, 13:57
Any other suggestions? Are the voltages correct?

#5 Re: HP 14-dw1025ns Keyboard, touchpad and backlight do not respond

Napisal/-a matic • 21 Januar 2025, 09:18
Measure the voltages to ground on pins 16, 17 of LVDS connector CN3000, when the machine is turned on with the internal screen connected.

#6 Re: HP 14-dw1025ns Keyboard, touchpad and backlight do not respond

Napisal/-a Zemog • 29 Januar 2025, 12:43
Finally, this customer decided to pick up the laptop, because he needed it urgently and couldn't wait.
:(
I'm locking the topic, as I can't make progress.

Re: HP 14-dw1025ns Keyboard, touchpad and backlight do not respond

Napisal/-a Google Adsense [BOT] • 29 Januar 2025, 12:43
Podobne Teme
EliteBook 1030 g3 (DA0Y0PMBAF0) Letter C typing without any keyboard connected...
MacBook Air M3, A3113, EMC 8611, Mobo 661-40169, Keyboard Connection Board Problem
Macbook A2289 820-01987 no backlight
  Apple MacBook 10,1 A1534 - Nie działa touchpad  [REŠENO]
ASUS A556U, płyta x556uv rev 3.1 - nie działa touchpad
  Lenovo Thinkpad P53 płyta nm-c262 Rev: 1.0 nie działa touchpad i trackpoint  [REŠENO]

Kdo je na strani

Po forumu brska: 0 registriranih uporabnikov in 2 gostov

_______________________________
Vse pravice pridržane. Nepooblaščeno kopiranje vsebine te spletne strani ali njenega dela je strogo prepovedano.
Vse blagovne znamke, izdelki ali storitve, objavljene na tej spletni strani, pripadajo njihovim zakonitim lastnikom, so avtorsko zaščitene in se uporabljajo samo v informativne namene.