HP G6 Series - Quanta R13 - NO DISPLAY, NO RUN VOLTAGES, VRON Missing...

Collapse
X
Collapse
+ More Options
Posts
 
  • Page of 2
  • Time
  • Show
Clear All
new posts
Previous 1 2 template Next
  • loser18
    Badcaps Veteran
    • Nov 2013
    • 274
    • UK
    #1

    HP G6 Series - Quanta R13 - NO DISPLAY, NO RUN VOLTAGES, VRON Missing...

    Hi...

    I've received a Quanta DA0R13MB6E1...
    Checked it under microscope & found some missing (literally ripped off) caps & resistors around PU13...
    So fixed that & mobo turns on, fan spins, but doesn't post (no display)...

    NOW the weird thing is I've tried 2 different CPU's and with one it will cut off after 0.5 sec(all voltages also jump up, but is so quick)...
    The other one starts, fan spins as crazy and that's it...The only voltage I've got is 1.8V from PU13...
    Checked all other coils & got NO voltage whatsoever...

    ANOTHER weird thing is that when I've been checking resistance@ coils PL25 showed 20ohms before, but now getting 0.2ohms so it's obviously shorted...Short is on +1.05V side & checked PC255, PC253 but they're OK...

    Also checked SIO signals (before +1.05V short)...

    -SUSON, MAINON are OK, however NOT getting VRON...

    When tracing MAINON noticed that getting on 1 side 3.3V and the other only 2.8V @ PD14...

    THIS MOBO CONFUSED ME SO MUCH I DON'T KNOW WHERE TO START!!!

    Schematics:
    Attached Files
    Last edited by loser18; 06-09-2014, 05:05 PM.
    Tags: None
    • loser18
      Badcaps Veteran
      • Nov 2013
      • 274
      • UK
      #2
      Re: HP G6 Series - Quanta R13 - NO DISPLAY, NO RUN VOLTAGES, VRON Missing...

      Also would it post without AD_ID signal?

        Comment

        • loser18
          Badcaps Veteran
          • Nov 2013
          • 274
          • UK
          #3
          Re: HP G6 Series - Quanta R13 - NO DISPLAY, NO RUN VOLTAGES, VRON Missing...

          Really...no one?

          The short is gone (at least jumped up to 20 ohms) & think it's all right as it's 1.05v rail & it's related to gmch...

          Think the problem would be one or more regulators...
          SIO is not getting HWPG signal & therefore not executing VRON...
          But how to check regulators when it's powering up only for a sec...even without CPU...
          how do you guys dealin with this?
          also this is more complex mobo...looks like one regulator depends on the other...

            Comment

            • dj_ricoh
              Badcaps Legend
              • Jan 2013
              • 2073
              • uk
              #4
              Re: HP G6 Series - Quanta R13 - NO DISPLAY, NO RUN VOLTAGES, VRON Missing...

              solder a wire on the board where is short.
              and start to bend the board. see if its going. maybe its from the chipset
              lets face it its a G6
              Just cook it! It's already broken.

                Comment

                • atsio
                  Badcaps Veteran
                  • Oct 2013
                  • 819
                  • Greece
                  #5
                  Re: HP G6 Series - Quanta R13 - NO DISPLAY, NO RUN VOLTAGES, VRON Missing...

                  Oscilloscope and I am afraid it's GMCH problem. Try a reflow.

                    Comment

                    • dj_ricoh
                      Badcaps Legend
                      • Jan 2013
                      • 2073
                      • uk
                      #6
                      Re: HP G6 Series - Quanta R13 - NO DISPLAY, NO RUN VOLTAGES, VRON Missing...

                      same method with the wire when you want to see a V with power on
                      Just cook it! It's already broken.

                        Comment

                        • dj_ricoh
                          Badcaps Legend
                          • Jan 2013
                          • 2073
                          • uk
                          #7
                          Re: HP G6 Series - Quanta R13 - NO DISPLAY, NO RUN VOLTAGES, VRON Missing...

                          i will have introduce that board to my friend OVEN at the last screw
                          Just cook it! It's already broken.

                            Comment

                            • loser18
                              Badcaps Veteran
                              • Nov 2013
                              • 274
                              • UK
                              #8
                              Re: HP G6 Series - Quanta R13 - NO DISPLAY, NO RUN VOLTAGES, VRON Missing...

                              21ohms...And it's intel...I've got several of these boards as spares and all read around 20ohms at that coil...

                              Still don't understand that PU13...With the other CPU it has all voltages OK but not sending HWPG...

                                Comment

                                • atsio
                                  Badcaps Veteran
                                  • Oct 2013
                                  • 819
                                  • Greece
                                  #9
                                  Re: HP G6 Series - Quanta R13 - NO DISPLAY, NO RUN VOLTAGES, VRON Missing...

                                  Check resistance of capacitors on GMCH.

                                    Comment

                                    • loser18
                                      Badcaps Veteran
                                      • Nov 2013
                                      • 274
                                      • UK
                                      #10
                                      Re: HP G6 Series - Quanta R13 - NO DISPLAY, NO RUN VOLTAGES, VRON Missing...

                                      There's only one cap... ( think it's HM65, so actually it's PCH)
                                      One side reads 0.5 something & the other 10.5 on 20K scale (across the same on 20K scale)...

                                        Comment

                                        • atsio
                                          Badcaps Veteran
                                          • Oct 2013
                                          • 819
                                          • Greece
                                          #11
                                          Re: HP G6 Series - Quanta R13 - NO DISPLAY, NO RUN VOLTAGES, VRON Missing...

                                          Check resistance on all pins of PU13

                                            Comment

                                            • loser18
                                              Badcaps Veteran
                                              • Nov 2013
                                              • 274
                                              • UK
                                              #12
                                              Re: HP G6 Series - Quanta R13 - NO DISPLAY, NO RUN VOLTAGES, VRON Missing...

                                              NO short except 3,4,5 (GND)...

                                                Comment

                                                • loser18
                                                  Badcaps Veteran
                                                  • Nov 2013
                                                  • 274
                                                  • UK
                                                  #13
                                                  Re: HP G6 Series - Quanta R13 - NO DISPLAY, NO RUN VOLTAGES, VRON Missing...

                                                  I've checked datasheet & it should send HWPG when PIN6 VSNS is 0.8V (according to schematics)

                                                    Comment

                                                    • dj_ricoh
                                                      Badcaps Legend
                                                      • Jan 2013
                                                      • 2073
                                                      • uk
                                                      #14
                                                      Re: HP G6 Series - Quanta R13 - NO DISPLAY, NO RUN VOLTAGES, VRON Missing...

                                                      did you power the board naked? cpu fan and power button?
                                                      no screen, nothing
                                                      Just cook it! It's already broken.

                                                        Comment

                                                        • loser18
                                                          Badcaps Veteran
                                                          • Nov 2013
                                                          • 274
                                                          • UK
                                                          #15
                                                          Re: HP G6 Series - Quanta R13 - NO DISPLAY, NO RUN VOLTAGES, VRON Missing...

                                                          Originally posted by dj_ricoh
                                                          did you power the board naked? cpu fan and power button?
                                                          no screen, nothing
                                                          Yep...It wont post,cause it's stuck in S3 i think...
                                                          It's getting SUS, MAINON but no VRON...
                                                          VRON is executed only after all regulators are OK & send HWPG signal to SIO...That's why I think it's not PCH problem...
                                                          Without CPU all voltages jump up, but it cuts off so quickly I can't measure them...

                                                            Comment

                                                            • atsio
                                                              Badcaps Veteran
                                                              • Oct 2013
                                                              • 819
                                                              • Greece
                                                              #16
                                                              Re: HP G6 Series - Quanta R13 - NO DISPLAY, NO RUN VOLTAGES, VRON Missing...

                                                              It's the UMA or discrete version?

                                                                Comment

                                                                • loser18
                                                                  Badcaps Veteran
                                                                  • Nov 2013
                                                                  • 274
                                                                  • UK
                                                                  #17
                                                                  Re: HP G6 Series - Quanta R13 - NO DISPLAY, NO RUN VOLTAGES, VRON Missing...

                                                                  It's UMA...
                                                                  There's only HM65 on board and NO VRAM...

                                                                    Comment

                                                                    • atsio
                                                                      Badcaps Veteran
                                                                      • Oct 2013
                                                                      • 819
                                                                      • Greece
                                                                      #18
                                                                      Re: HP G6 Series - Quanta R13 - NO DISPLAY, NO RUN VOLTAGES, VRON Missing...

                                                                      With an dmm in these situations probably you will not see the signals. You need an oscilloscope to confirm that the signals are not there.

                                                                        Comment

                                                                        • dj_ricoh
                                                                          Badcaps Legend
                                                                          • Jan 2013
                                                                          • 2073
                                                                          • uk
                                                                          #19
                                                                          Re: HP G6 Series - Quanta R13 - NO DISPLAY, NO RUN VOLTAGES, VRON Missing...

                                                                          so you got 2 cpu one fan goes crazy, second shuts off. right?
                                                                          without it shut down to?
                                                                          Just cook it! It's already broken.

                                                                            Comment

                                                                            • loser18
                                                                              Badcaps Veteran
                                                                              • Nov 2013
                                                                              • 274
                                                                              • UK
                                                                              #20
                                                                              Re: HP G6 Series - Quanta R13 - NO DISPLAY, NO RUN VOLTAGES, VRON Missing...

                                                                              Originally posted by atsio
                                                                              With an dmm in these situations probably you will not see the signals. You need an oscilloscope to confirm that the signals are not there.
                                                                              But when checking PU13 for HWPG without CPU voltage jumps up...
                                                                              Originally posted by dj_ricoh
                                                                              so you got 2 cpu one fan goes crazy, second shuts off. right?
                                                                              without it shut down to?
                                                                              Yes...Exactly...

                                                                                Comment

                                                                                Previous 1 2 template Next

                                                                                Related Topics

                                                                                Collapse
                                                                                • maneatingmonkey
                                                                                  Missing LCD Panel Voltages VGH, VGL, VCOM (TCL 55P6US Sound & Backlight but NO Picture)
                                                                                  by maneatingmonkey
                                                                                  I have a TCL 55P6US with sound and backlight but no picture. This model does not have a T-CON board, and the right (rear perspective) panel board is fed from the left panel board. I have not been able to induce any change by disconnecting the secondary panel board or the tape cut-off method on the primary board.

                                                                                  There are a bunch of voltages missing on the panel boards. I can't find any shorted caps of the panel boards, and all of the missing voltage rails read in the kiloohms, which leads me to suspect the issue may lie on the circuit board, rather than a short in the panel.
                                                                                  ...
                                                                                  L Panel #1
                                                                                  11 Photos
                                                                                  03-27-2024, 07:17 AM
                                                                                • karlp028
                                                                                  MSI Z390-A PRO missing VCORE voltages
                                                                                  by karlp028
                                                                                  I've got an MSI Z390-A Pro motherboard that starts up fine, but it's missing the VCORE (and VGT) voltages. All of the other voltages are present (e.g. VCCSA, VCCIO) and I know the CPU (i7-9700k) is good. Now, the original PWM controller (UP9521P) had an internal short and I replaced it with a new one. All of the enable signals look good. The problem seems to be the PWM signals going to the MOSFET drivers. I checked them with an oscilloscope and they are all flat 1.5V with no pulses. I don't know why this would be and I'm not sure where to look next.
                                                                                  06-23-2025, 01:25 AM
                                                                                • mat2k
                                                                                  Lenovo 300-15IBR - No SYSON, no SUSP#, bunch of missing voltages
                                                                                  by mat2k
                                                                                  Hello, I've been struggling with this one today. I'm troubleshooting a Lenovo 300-15IBR (board BMWC1/BMWC2 NM-A471) that turns on the power LED and does a bit of fan spin but nothing else. 3v3sb and 5vsb present, no 1.05v, no 1.35vddr, no vcore, no 1.8vsb.
                                                                                  BIOS has been reflashed with one I found here, supposedly tested OK by someone else. I don't have an EC programmer unfortunately.
                                                                                  I looked around and SYSON is 0v, SUSP# is 0v too. Forcing them to 3v3 enables the 1.35v rail, but the 1.05v and 1.8v rails are still missing (generated by PU704). EN_1P05A signal is 3.3v, and IN_1P05A...
                                                                                  12-01-2024, 11:00 PM
                                                                                • ResoluteHawk
                                                                                  Quanta 0P5 (DA0P5HMB8E0-Rev E) Missing ACDRV
                                                                                  by ResoluteHawk
                                                                                  I have an HP 15-DY laptop in because the battery is not charging.

                                                                                  If I use a charged battery, the laptop powers on but the battery will not charge, however the orange charge light does turn on. The laptop loses power as soon as I disconnect the battery.

                                                                                  I've replaced the BQ247 chip with a known working one and I get the same issue and the same measurements.

                                                                                  Measurements are as follows:

                                                                                  BQ728 IC
                                                                                  VCC (Pin 20) => 19V
                                                                                  CMSRC (Pin 3) => 0.8V (This is a problem but I can't figure out what's causing the low voltage)
                                                                                  ACDRV (Pin...
                                                                                  04-10-2025, 11:36 AM
                                                                                • Capacitorial
                                                                                  Powersupply has all the voltages - Monitor still no power
                                                                                  by Capacitorial
                                                                                  Hello guys,

                                                                                  I have a Philips 240B7QPJEB. The monitor seems completely dead.
                                                                                  I opened it and measured the voltages of the powersupply. I found that a mosfet was dead and replaced it.
                                                                                  On the connector, that goes to the TCON board, all voltages 15-19V and 5V are present.
                                                                                  The small connector on the left of the PSU has two cables with 18V and all the other have 0.2V. It connects on this small connector on the left ontop of the panel. I guess the backlight? Seens fine I guess.
                                                                                  The weird thing is, that the Power LED is powered over the TCON board.
                                                                                  On The TCON...
                                                                                  12-28-2024, 02:12 PM
                                                                                • Loading...
                                                                                • No more items.
                                                                                Working...