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HP Probook 450 G5 Charging LED Issue: Orange Flash, Processor Overheat, Power Button Non-Responsive

xxl245 9429 20
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  • #1 18504534
    xxl245
    Level 16  
    Probook 450 G5
    board DA0X8CMB6E0 REV: E

    After connecting the power supply (tested on 2 original power supplies):
    -power LED flashes orange
    -does not respond to the power button
    -the processor heats up
    -voltage on pin id 19,18
    -after connecting to the board, the voltage on the ID pin is 1.3V
    -current consumption 0.66A

    After connecting a charged battery:
    -power LED flashes orange
    -does not respond to the power button
    -the processor heats up

    I am attaching photos with measurements
    Attachments:
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  • #3 18511242
    xxl245
    Level 16  
    RebellionArts wrote:
    Hello,

    I see that the enthusiasm is there, the meter is also working, but not current consumption 0.66V because the current is given in amperes :)
    The orange diode suggests that the battery is not charging (potential) (there are many theories).
    A mine of patterns
    Basics of operation
    If you really want to fix this, look here


    I corrected the error and went through the training twice. Unfortunately, I did not draw any conclusions.
  • #4 18511383
    lisek
    Service technician RTV  
    One of the 6 topics about this album gives a link to SM Link

    This is a board with 8th gen CPU
    HP ProBook 450 G5 15.6" , i5-8250U , MB: DA0X8CMB6E0

    ps
    HP PROBOOK 440 G4 MB: DA0X81MB6E0
    * Quanta Reilly 13"/Rourke 14" platform
    kbc NPCE586HA 0MX
    Flash Bios GD25B128CSIG
    charger PU1 BQ24 780S RUYR
    3/5V on PU25 RT6575AGQW

    MS similar Link_ probook-450-g3-quanta-x63-da0x63mb6h1
  • #5 18511881
    RebellionArts
    Level 23  
    Maybe from the beginning.
    Does the laptop have a fault only in the charging/power supply segment?
    Is there an image on the matrix/monitor?
  • #7 18512947
    xxl245
    Level 16  
    RebellionArts wrote:
    Maybe from the beginning.
    Does the laptop have a fault only in the charging/power supply segment?
    Is there an image on the matrix/monitor?


    After connecting the power supply or battery, only the LED blinks orange. No response to power, no image, no fan response. The processor warms up slowly.
  • #8 18513280
    RitterX
    Level 40  
    You won't achieve anything by thinking. Take the meter in your hand and first measure the product of the Vbat and +V20B outputs as well as the +3V/+5V converter and the processor converter voltage. Next comes the RAM supply voltage.
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  • #9 18513356
    xxl245
    Level 16  
    lisek wrote:
    You have a boardview attached to this board, measure it and think about it

    PU20 APW8715QBI +1.5V_GFX Volt/4A

    HP Probook 450 G5 Charging LED Issue: Orange Flash, Processor Overheat, Power Button Non-Responsive HP Probook 450 G5 Charging LED Issue: Orange Flash, Processor Overheat, Power Button Non-Responsive HP Probook 450 G5 Charging LED Issue: Orange Flash, Processor Overheat, Power Button Non-Responsive HP Probook 450 G5 Charging LED Issue: Orange Flash, Processor Overheat, Power Button Non-Responsive
    HP Probook 450 G5 Charging LED Issue: Orange Flash, Processor Overheat, Power Button Non-Responsive HP Probook 450 G5 Charging LED Issue: Orange Flash, Processor Overheat, Power Button Non-Responsive HP Probook 450 G5 Charging LED Issue: Orange Flash, Processor Overheat, Power Button Non-Responsive


    Lisek, this does not apply to this album.
    You attached DA0X81MB6E0 and here is DA0X8CMB6E0

    Added after 1 [minute]:

    RitterX wrote:
    You won't achieve anything by thinking. Take the meter in your hand and first measure the product of the Vbat and +V20B outputs as well as the +3V/+5V converter and the processor converter voltage. Next comes the RAM supply voltage.


    I don't have sms for this CD. Can you describe what I should measure based on the photos?
  • #10 18513483
    lisek
    Service technician RTV  
    It should be the same.
    The author of the topic will check the layout.
  • #11 18515083
    RitterX
    Level 40  
    xxl245 wrote:
    I don't have sms for this CD. Can you describe what I should measure based on the photos?

    From what is marked in the photo you have 3.3V/5V and 1.8V for RAM. There is no graphics converter voltage in the photo, the left photo is lower right corner. The voltages as you provided mean little because they do not concern the measurement points. Specifically on the advantages of electrolytic capacitors.
    Near the processor, all converters should have voltages higher than 0V, but this is probably not the case. KBC chip, right photo, large chip with Nuvoton written on it, is it warm, cold, hot?
  • #12 18515282
    xxl245
    Level 16  
    RitterX wrote:
    xxl245 wrote:
    I don't have sms for this CD. Can you describe what I should measure based on the photos?

    From what is marked in the photo you have 3.3V/5V and 1.8V for RAM. There is no graphics converter voltage in the photo, the left photo is lower right corner. The voltages as you provided mean little because they do not concern the measurement points. Specifically on the advantages of electrolytic capacitors.
    Near the processor, all converters should have voltages higher than 0V, but this is probably not the case. KBC chip, right photo, large chip with Nuvoton written on it, is it warm, cold, hot?


    "left photo, lower right corner" is probably battery charging and I have 12.6V there.
    I have the second disc to compare.
    The only difference in the resistance of the coils is the coil at the processor where I have 1Ω 1V (after removing the coil, the resistance is on the processor side) and on the working board it is 80Ω 1V
    KBC room temperature

    I will post the voltage measurements on the capacitors tomorrow morning.

    Added after 13 [minutes]:

    lisek wrote:
    It should be the same.
    The author of the topic will check the layout.

    Can you mark where the charger is in the photo?
    I will provide its designation.
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  • #13 18515411
    lisek
    Service technician RTV  
    If you have RT6575 for 3/5V, the charger must be, as I wrote, BQ24780S
    - HP Probook 470 G5 (DA0X8CMB6E0 Rev E) cpu e.g. SR3LC (i7-8550U)/ i5-8350U SR3LA
    * plus GeForce 930MX 2GB
    * kbc NPCE586ha2mx

    HP Probook 450 G5 Charging LED Issue: Orange Flash, Processor Overheat, Power Button Non-Responsive
    the one on the left is V_Core *code (08 xsd) i.e. ISL95808HRZ-T
    The one on the right... give a description

    ps
    It is still available in mb ISL95338 Link
    HP Probook 450 G5 Charging LED Issue: Orange Flash, Processor Overheat, Power Button Non-Responsive

    rev.F without add. graphics
    HP Probook 450 G5 Charging LED Issue: Orange Flash, Processor Overheat, Power Button Non-Responsive
  • #14 18515516
    xxl245
    Level 16  
    lisek wrote:
    If you have RT6575 for 3/5V, the charger must be, as I wrote, BQ24780S
    - HP Probook 470 G5 (DA0X8CMB6E0 Rev E) cpu e.g. SR3LC (i7-8550U)/ i5-8350U SR3LA
    * plus GeForce 930MX 2GB
    * kbc NPCE586ha2mx

    HP Probook 450 G5 Charging LED Issue: Orange Flash, Processor Overheat, Power Button Non-Responsive
    the one on the left is V_Core *code (08 xsd) i.e. ISL95808HRZ-T
    The one on the right... give a description

    ps
    It is still available in mb ISL95338 Link
    HP Probook 450 G5 Charging LED Issue: Orange Flash, Processor Overheat, Power Button Non-Responsive

    rev.F without add. graphics
    HP Probook 450 G5 Charging LED Issue: Orange Flash, Processor Overheat, Power Button Non-Responsive


    On the left, yellow arrow APW8715
    On the right, a green arrow, Intersil 9538h

    Added after 6 [hours] 55 [minutes]:

    xxl245 wrote:
    RitterX wrote:
    xxl245 wrote:
    I don't have sms for this CD. Can you describe what I should measure based on the photos?

    From what is marked in the photo you have 3.3V/5V and 1.8V for RAM. There is no graphics converter voltage in the photo, the left photo is lower right corner. The voltages as you provided mean little because they do not concern the measurement points. Specifically on the advantages of electrolytic capacitors.
    Near the processor, all converters should have voltages higher than 0V, but this is probably not the case. KBC chip, right photo, large chip with Nuvoton written on it, is it warm, cold, hot?


    "left photo, lower right corner" is probably battery charging and I have 12.6V there.
    I have the second disc to compare.
    The only difference in the resistance of the coils is the coil at the processor where I have 1Ω 1V (after removing the coil, the resistance is on the processor side) and on the working board it is 80Ω 1V
    KBC room temperature

    I will post the voltage measurements on the capacitors tomorrow morning.

    Added after 13 [minutes]:

    lisek wrote:
    It should be the same.
    The author of the topic will check the layout.

    Can you mark where the charger is in the photo?
    I will provide its designation.
    Attachments:
  • #15 18517218
    lisek
    Service technician RTV  
    Give descriptions of the remaining arrangements. integrated into QFN or WQFN objects

    In the photo I found:

    ISL95859A Multi-phase 1+2+1 Core Controller
    NCP81172 VRAM 3-phase per chip + one on memory
    APW8868B DDR3L Link
    RTD2166 DPort to VGA translator
    RT6575 WQFN-20L 3/5V
  • #16 18517264
    RitterX
    Level 40  
    If you have a significantly lower resistance value in the processor power supply branch, first check all MOSFETs of this converter. You measure both source-drain and source-gate on the diode range. You won't be able to go any further without the Hot Air station because at some stage you will have to desolder, for example, a suspicious transistor. You may have a short circuit, e.g. caused by a ceramic capacitor.
  • #17 18517316
    xxl245
    Level 16  
    RitterX wrote:
    If you have a significantly lower resistance value in the processor power supply branch, first check all MOSFETs of this converter. You measure both source-drain and source-gate on the diode range. You won't be able to go any further without the Hot Air station because at some stage you will have to desolder, for example, a suspicious transistor. You may have a short circuit, e.g. caused by a ceramic capacitor.

    However, after removing the coil, the resistance goes straight to the processor, so there is no point in checking the mosfets.
    I have hot air in stock.
  • #18 18518803
    RitterX
    Level 40  
    If you have low resistance to ground in the branch, the first thing you check, or disassemble for testing, are the MOSFETs. Even if the line is almost 0R, a damaged MOSFET may have a transition not only on the SD connector but also on the SG connector.
    You don't measure the coil resistance in series, but with respect to ground. This is a good orientation point because, unlike capacitors, it is usually one per phase and has large leads that are easy to grasp with a probe.
  • #19 18534674
    xxl245
    Level 16  
    RitterX wrote:
    If you have low resistance to ground in the branch, the first thing you check, or disassemble for testing, are the MOSFETs. Even if the line is almost 0R, a damaged MOSFET may have a transition not only on the SD connector but also on the SG connector.
    You don't measure the coil resistance in series, but with respect to ground. This is a good orientation point because, unlike capacitors, it is usually one per phase and has large leads that are easy to grasp with a probe.


    I checked the mosfets and they were not punctured.
    Finally, I replaced the disc, so the topic can be closed
  • #20 19322337
    VVoSeba
    Level 8  
    Now I also have such a laptop with the DA0X8CMB6E0 REV.E board
    The first symptom was the caps and num lock flashing 7 times, no reaction to power, even the fan did not spin. It was not very convenient because the codes on the HP website and everywhere are described for up to 6 flashes. After cleaning the ME, the symptom is the same as described here, i.e. the orange LED is flashing (tried on several power supplies) and there is no reaction to power. At the moment, after such a general inspection and measurements, including analyzing what was written here, it is not clear what to catch here.
  • #21 19322544
    lisek
    Service technician RTV  
    There is a video of 7x flashing, but HP does not describe where and what is damaged
    Link
    HP Probook 450 G5 Charging LED Issue: Orange Flash, Processor Overheat, Power Button Non-Responsive
    *from the HP forum Link
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Topic summary

The discussion revolves around an HP ProBook 450 G5 (board DA0X8CMB6E0 REV: E) experiencing a charging LED issue characterized by an orange flash, non-responsive power button, and processor overheating. Users report testing with multiple original power supplies and a charged battery, but the device remains unresponsive with the power LED flashing orange. Various troubleshooting steps are suggested, including measuring voltages at specific pins, checking the functionality of MOSFETs, and analyzing the board layout. The conversation highlights the importance of measuring voltages related to the power supply and processor, as well as the potential need for component replacement or further diagnostics. One user ultimately resolved their issue by replacing the disk, while another user reported similar symptoms with no clear solution.
Summary generated by the language model.
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