Need help with HP15-fxxxxx Quanta U99/U92 LVDS <> eDP conversion.

Collapse
X
Collapse
 
  • Page of 1
  • Time
  • Show
Clear All
new posts
Previous template Next
  • lpraderi
    Member
    • Dec 2017
    • 30
    • Uruguay
    #1

    Need help with HP15-fxxxxx Quanta U99/U92 LVDS <> eDP conversion.

    Hello , for some time I was studying Quanta U9x/8x schematics and the option to use both type of screen (LVDS 40 pin / eDP 30 pin).
    In some cases to use LVDS screen PCB use converter IC RTD2132/6
    Now I found an HP 15 F series U99 mainboard with RTD chip not populated and LVDS 40 pin lcd touch screen
    at the same time I have another HP 15 N series with Quanta U92 mainboard and RTD2136 with eDP 30 pin lcd screen (no touch).
    Maybe someone more experienced in the subject can clarify if is posible to change type of screen used with some resistors / bios options change.
    Attached both schematics

    [MOD EDIT]
    Link to Quanta U99 Schematic - https://www.badcaps.net/forum/troubl...-u99-schematic
    Link to Quanta U92 Schematic - https://www.badcaps.net/forum/troubl...atic-needed​
    Last edited by SMDFlea; 11-25-2023, 09:52 AM.
    Tags: None
    Previous template Next

    Related Topics

    Collapse
    • Ryan.man
      Macbook 2017 with touchbar (A1706) won't turn on after removing the screen
      by Ryan.man
      Hello everybody! Posting this in hopes somebody has some expertise that leads to a clear path of troubleshooting that saves me a lot of time!

      My macbook has the flex cable problem, the one that prevents the screen turning on. Ive been dealing with this for the last 3 years. Last year it went dead and I managed to fix it following youtube tutorials. But my fix wasnt the best, the problem returned a month later. This week, it went dead again. I again tried to fix it.

      This time the original cable broke too close to the screen, it can't be fixed without tearing the screen...
      02-04-2025, 12:23 PM
    • smic717394
      iphone XS turns off when press on screen.
      by smic717394
      Hi,

      I have a iphone XS that came in for a screen replacement, the screen was badly cracked, and inside missing scues, on the back of the screen still the blue protector, the screen was a LCD. So we replaced the screen and all good, installed the screen and we noticed that pressing the screen with a bit of force but not excessive, the phone dies. After plugging the charger it turns back on, but again if you press it it dies. I open the phone again, and I can't see anything major, with the phone open, if I press on the logic board, battery, charging board, or even putting pressure on...
      07-25-2024, 10:16 AM
    • ferah831208
      HP gaming 15-0013dx quanta G3HA no video, screen polarize on and off loop
      by ferah831208
      I have an HP gaming 15-0013dx laptop , motherboard quanta G3HA with AMD Ryzen 5 cpu and Nvidia discrete grsphics card. The laptop turns on and u can see the screen polarizing on and off in a loop but no video signal. All voltages are ok measured and stable (I checked all with oscilloscope). This schematics don't have power sequence but I'm using a similar sequence from another laptop with AMD CPU and I get all to the point CPU must release apu_pwrok and apu_rst#, this signal comes valid only for the period of time the screen is polarized and they disappear and same loop behaviour (active/inactive)....
      12-07-2024, 04:02 PM
    • Chrissygizmo
      Samsung UE55JU6800K half screen dark
      by Chrissygizmo
      Hello everyone, I’ve just been given a Samsung UE55JU6800K smart tv as it had white spots on the screen due to the led lenses falling off. After refitting them & putting the tv back together I thought it was a nice easy fix for a free bedroom tv , then I tried it before screwing the back into place. I realised that the right side of the screen was darker than the other side, I removed the screen again as I thought the backlights had failed but they are fine.
      I put the screen back in place & turned it back on . The screen seemed to be ok again but different screens on the same...
      02-10-2025, 12:33 AM
    • triplefour
      TCL 65S403 Blank Backlit Screen w/ sound ... voltage besides 12v missing at LVDS
      by triplefour
      Blank Backlit Screen w/ sound verified via DVD on HDMi 3
      no change to display when disconnect tcon
      no change to display when disconnect panel cables (both sides, one at a time, etc-)
      can faintly see a vertical dividing line splitting the panel even in half. super faint tho.
      also can faintly see a black cloud in the center of the screen. a darker area.
      color of screen is backlit black screen which basically looks gray
      12v present at TCON fuse
      other voltages on LVDS cable (TCON side) are missing. only see 2 pins with voltage .69v and .60v
      ...
      10-28-2021, 01:00 AM
    • Loading...
    • No more items.
    Working...