Is the PCH BD82HM65 defective ?

Collapse
X
Collapse
 
  • Page of 1
  • Time
  • Show
Clear All
new posts
Previous template Next
  • pecrie
    Senior Member
    • Nov 2011
    • 182
    #1

    Is the PCH BD82HM65 defective ?

    So , I have this MB - DAOR13MB6EO - Rev E from a HP G7

    I do measure any shorts - when I plug the adapter I have the DC jack white led and the power led is also on.
    The MB starts up but I have no picture on screen and also not on VGA connected monitor.

    Also the leds on KB do not lit.The fan is spinning at normal speed.

    Almost all voltages seem to be there.Here is what I found :

    PL 20 = 5.1 V = +5.1V_ALWP = +5VS5
    PL 23 = 3.3 V = +3.3V_ALWP = +3.3VS5
    PL 19 = 0.587V

    PL 16 = 1.5V = DDR3 = PU4 RT8207
    PL 15 = 1.8V = PCH > PU13 TPS54319

    PL 21 = 1.16V = +VCC Core
    PL 22 = 1.16V = +VCC Core

    PL 18 = 0.918V = PCH /+1.1 VTT > PU1 RT8241A

    PL 24 = 1.2V = VGA Core > PU8 RT8208A
    PL 26 = 0.459V = CPU Core 2 > PU10 NCP5911

    PL 25 = 1.05V = PCH /+1.1VTT > PU11 RT8248A

    What I noticed is that the HM65 is getting hot (sometimes burning the backside of my hand)

    Also PL 21 22 25 26 and caps PC 246 248 254 get (very) hot /warm.
    When HM65 is burning my skin the fan starts to spin very fast (for a short moment)

    So I think that the HM65 is gone .. yes ?

    I have this schematic :
    Attached Files
    Tags: None
    • pecrie
      Senior Member
      • Nov 2011
      • 182
      #2
      Re: Is the PCH BD82HM65 defective ?

      Can anyone tell if the voltage of PL19 = 0.587V and PL26 = 0.459V is the correct value ??
      I'm not really sure what value they must have .

      But should they not be higher ?

        Comment

        • piernov
          Super Moderator
          • Jan 2016
          • 4435
          • France
          #3
          Re: Is the PCH BD82HM65 defective ?

          PL19 is battery charging rail. Without battery it'll have a random voltage on it.
          PL26 is iGPU VCore, almost never relevant.
          You can try to flash the BIOS, but there's a chance the GPU is dead.
          OpenBoardView — https://github.com/OpenBoardView/OpenBoardView

            Comment

            • pecrie
              Senior Member
              • Nov 2011
              • 182
              #4
              Re: Is the PCH BD82HM65 defective ?

              Piernov ,

              Thank you.Ok so I have no shorts and no lights on keyboard (caplock and num lock off)
              So , will try to flash the bios.

                Comment

                • pecrie
                  Senior Member
                  • Nov 2011
                  • 182
                  #5
                  Re: Is the PCH BD82HM65 defective ?

                  So , I flashed the bios with a later version F.65 .Both the main and the EC.
                  And now the cap- and numlock and wifi led are on on the KB.
                  Also I have the led screen coming on with a picture.

                  So it looks like the bios was not oke.

                  I did notice however that I cannot get a picture on a monitor via VGA.Maybe the KB is not ok ??

                    Comment

                    Previous template Next

                    Related Topics

                    Collapse
                    • pabloroggeri
                      BD82HM65 Intel SLJ8C Vs SLJ4P
                      by pabloroggeri
                      Hello friends:

                      ThinkPad S230
                      Mother: LA-8671P REV 1A​

                      Does anyone know the difference between these chipsets and if they can be replaced with each other? Does anyone have experience swapping one for the other.

                      I have doubts about my PCH BD82HM65 (SLJ8C), the 32.768Khz crystal does not work.

                      In its place I put a BD82HM65 (SLJ4P). With this new PCH the RTC crystal does oscillate but the equipment in general does not start.

                      Comparing diagrams, the SLJ4P and SLJ8C use the same pins, but I don't know what the difference would...
                      03-22-2024, 02:15 PM
                    • stormanimal83
                      Gigabyte B450 Aorus Pro stuck at VGA LED, burning hot LED Controller MCU 1 under PCI slot...
                      by stormanimal83
                      Hey....

                      Board as written in description was stuck at VGA LED. common Problem wit these type of bords.... tried all the "standard stuff" like resettin... reseatin.... found out the LED Controller MCU1 = IT8295FN-56A geting burning hot under the last PCI Slot.. now i desoldered it cause there were only 18 ohms at the caps arround.... another aorus x470 in working condition with similar part and nearly same layout had arround 280 ohms...

                      my question is: why doesnt the board start know without this chip.... worked myself through the boardview but i can´t understand...
                      01-18-2024, 02:15 PM
                    • ignacio.ino27
                      Vaio DA0HK1MB6E0 MBX-247 Burning any EC
                      by ignacio.ino27
                      Hello to all.

                      I have this Sony Vaio QUANTA HK1 DA0HK1MB6E0 MBX-247 that is burning the NUVOTON EC when you connect it to power supply.

                      1) The +3vpcu line is going to a direct short after connecting the motherboard to power supply.
                      2) I discovered the EC NUVOTON was shorted. After removing it the short gone out on that line (+3vpcu) but... (If i quit the EC the 3.3v are pressent on +3vpcu because the shorted component was quited)
                      3) There were no shorts after soldering the new EC NUVOTON. But after connecting the board to power supply the EC keeps burning...
                      05-07-2022, 05:24 PM
                    • piernov
                      NVidia bumpgate
                      by piernov
                      Just archiving everything related to bumpgate since most stuff has disappeared from Google. Maybe people will finally take the time to read some of it and stop shouting "reflow gpu" at every occasion but rather try to understand what the real issue is…
                      Interesting parts about the failure analysis are "Why Nvidia's chips are defective" and "Why Nvidia's duff chips are due to shoddy engineering"


                      May complete this post at a later date with more details.
                      Basically issue is a combination of thermal dissipation of the chip with hotspot,...
                      03-27-2021, 10:34 AM
                    • howardc64
                      LG 65UQ8000AUB no backlight burning smell
                      by howardc64
                      Only 3 years old. Owner said backlight went out and burning smell. Didn't bother plugging in to check if had power LED. Just opened the TV rear and found shorted bridge rectifier diode on the backlight circuit on the PSU. SF26G (400V 2A super fast recovery rectifier link ) diode replace with SF26 (what I had on hand) Google AI said G = Green Components.

                      Burn looked pretty bad on the board but just was blackened carbon coating material. Scraped and cleaned off quite well and clean solder pad for the new diode.


                      ...
                      06-07-2025, 10:38 PM
                    • Loading...
                    • No more items.
                    Working...