dv6000 at3 , no vcore lines enable

Collapse
X
 
  • Time
  • Show
Clear All
new posts
  • highpulse
    i hate HP
    • May 2013
    • 1489
    • portugal

    #1

    dv6000 at3 , no vcore lines enable

    hey guys , got here this dv6000 on the bench , does turn on , but got a consume of 0.34 amp , (pratically nothing for this model) , altough i notice that the core lines for cpu are 0 volts , cheked all coils for short , noticed that with cpu , i got 2.5 ohm resistance to gnd , does feel low , since it should be around 20 ohm (with cpu on ) , cheked fets for that lines and all are ok , no caps shorted to gnd as well , replaced 8770 , since i had strange values on pins 39 40 and pins 3 , also no gate values , and no PLTRST signals at all

    cheked that RSMRST been sent by KBC as normal , but no response from SB enabling PLTRST , replaced 8770 and also south but still the same issue ,
    all VCC VDD VIN as present on maxim 8770 .
    so im a bit stuck with this one , anyone have sugestions , maybe something is missing me .
    Thk in advance

    schematic and boardview attached
    Attached Files
  • highpulse
    i hate HP
    • May 2013
    • 1489
    • portugal

    #2
    Re: dv6000 at3 , no vcore lines enable

    oh another thing after south replacement , notice that cpu core line with cpu was still 2.5 , so i inserted again a new cpu , and voila with new cpu first time i got 1.5 am consume , and core lines active , i turn it off , then turn on again SAME FUC#$%# thing again . no core lines , but alltough i got now , 1.05 volts on pin 40 and pin 3 of 8770 , but still having LOW gate active with 5 volts , and does gates should be 0 , and the High gate should be more or less 1.05 (same as cpu vcore needs)
    so resuming , its like gates are working in oposite way , system should activate pq41 and pq33 but instead is activating gates for pq44 and pq42 .

    Comment

    Related Topics

    Collapse

    • Stanley1843
      Screen Display Vertical Multicolor Lines
      by Stanley1843
      Hello, I have a screen in where sometimes when I open it pop-up vertical multicolor lines (I would say the most of them are green). If I tun off and turn on the screen the lines dissapear or if I leave open the screen after approximately five minutes the lines gone. I measured the below voltages on the main PCB and on the T-CON board and the voltages are the same when it doesn’t display the vertical lines and when it displays the vertical lines. Also, I cleaned all the connectors very good with IPA. I moved back and forth the connectors and the COF tabs but the vertical lines didn't displayed...
      06-29-2024, 11:54 AM
    • jeyoung12
      Samsung QN50Q60t lines on screen
      by jeyoung12
      Hi all
      I have lines on the screen...which is an age old problem that can be remedied by watching Youtube videos and getting out the tape.
      My issue (after successfully fixing a different sammy tv with a separate tcon board and isolating the side of the panel...):

      This tv has an integrated tcon...so it is a bit more confusing when trying to isolate the clocks.
      It has a c ribbon and i have taken each end out to see if that will isolate the lines. instead, it makes it much worse ALL over the tv!

      So....i don't know what end of the C ribbon to work with...
      02-26-2024, 10:38 AM
    • Rubenlily
      Samsung QE50Q67TAU - horizontal lines
      by Rubenlily
      Hello,

      First of all I'm new here. While looking I found this amazing forum and I'm very happy I did. Now for my problem:

      I picked up a Samsung UHD QLED QE50Q67TAU from 2021 for $50 knowing it was defective. The seller said it had black lines and that it could get stuck in boot randomly.

      I've tried a new power cable, hard reset, opening up and jiggling all cables, pressing everywhere to see if I get a reaction but I've gotten nothing. I've tried the tape method but I've only managed to get the lines worse.

      I'm no expert but I've done the tape...
      08-16-2023, 01:12 PM
    • ggil44
      Sony XBR-65X750D Horizontal lines bottom of screen
      by ggil44
      Hi, I have a Sony XBR-65X750D that has horizontal lines at the bottom 6 inches of the screen. These lines appear to be every other line because the picture is still quite visible behind those lines. The lines appear all the time with a few other lines above and below the 6 inch level blinking on and off at about 2 second intervals. I'm not sure if this is a panel issue or power supply/main board problem. I did replace the T-Con board without any change in the problem. Any suggestions you might have would be greatly appreciated. Thanks,
      05-30-2023, 07:51 PM
    • randomrat
      Alienware X15 R2 LA-L611 No power
      by randomrat
      ​Not having the best of luck with my own gadgets atm - I own two identical X15 R2 laptops, both have died suddenly with no prior issues. I have time to focus on one of them and in this post. I might need some hand-holding with this so I kindly ask for some understanding

      Make: Alienware
      Model: X15 R2
      Motherboard: LA-L611
      CPU: i9-12900H
      GPU: RTX 3080Ti

      History: I was using the machine as normal when it suddenly switched off and never came back on. I've owned the machine for over a year and use a Dell Thunderbolt Dock to charge my laptop with....
      03-29-2025, 12:18 PM
    • Loading...
    • No more items.
    Working...