CF-19 mk8 no lights no power on

Discussion in 'Panasonic' started by LeonSK, Mar 23, 2021.

  1. LeonSK

    LeonSK Newbie

    Reputations:
    0
    Messages:
    8
    Likes Received:
    0
    Trophy Points:
    5
    Hello! I bought myself cf-19 mk8 0 hours.
    Toughbook shut down randomly when in bios. No lights nothing. Tried everything cmos battery out no battery no charger removed everything from machine nothing helps. I have working mk6 with me took front button plate wirh ribbon tested on mk6 and works. With multimeter i got 0V into power button, mk6 i had 3.3V. all fuses on board are okay. Voltage is 16.06 from charger freerun and 15.87 when connected to main board.

    Can somebody help me with schematics, guide me somehow how to fix this or where to look please.
     
  2. Shawn

    Shawn Crackpot Search Ninja and Options Whore

    Reputations:
    1,536
    Messages:
    8,263
    Likes Received:
    2,021
    Trophy Points:
    331
    I don't have any schematics for anything that new.

    First thing I would check the the port that the charger plugs into.
     
  3. LeonSK

    LeonSK Newbie

    Reputations:
    0
    Messages:
    8
    Likes Received:
    0
    Trophy Points:
    5
    Maybe somebody can find mk6 schematics. Power reaches most biggest mosfets. I located I/O chip yesterday gonna test that today i think problem is there.
     
  4. LeonSK

    LeonSK Newbie

    Reputations:
    0
    Messages:
    8
    Likes Received:
    0
    Trophy Points:
    5
    I compared biggest stuff with working mk6 unit easy stuff is not problem. Main board electronics is problem. Mk6 seems mostly same inside.
     
  5. BaRRmaley

    BaRRmaley Notebook Deity

    Reputations:
    206
    Messages:
    1,379
    Likes Received:
    451
    Trophy Points:
    101
    Ok :) Test mk8 with mk6's charged battery and whether mk8's battery is charged. Easy stuff to check before disassembly :))
     
    Shawn likes this.
  6. LeonSK

    LeonSK Newbie

    Reputations:
    0
    Messages:
    8
    Likes Received:
    0
    Trophy Points:
    5
    Tried this also :) nothing helped i think some mosfet is dead.
     
  7. Shawn

    Shawn Crackpot Search Ninja and Options Whore

    Reputations:
    1,536
    Messages:
    8,263
    Likes Received:
    2,021
    Trophy Points:
    331
    Can you just return it to the seller?
     
  8. LeonSK

    LeonSK Newbie

    Reputations:
    0
    Messages:
    8
    Likes Received:
    0
    Trophy Points:
    5
    Nope i bought it this way. Seller sayd they do not attempt any repairs so i bought it like lottery maybe easy stuff helps :D. It looks cosmetic like brand new outside also inside. If nothing helps to get mobo work ill buy tough used one from ebay and swap mobo.
     
  9. Toughbook

    Toughbook Drop and Give Me 20!

    Reputations:
    1,267
    Messages:
    7,356
    Likes Received:
    364
    Trophy Points:
    251
    Have you checked the RAM? Maybe swap some sticks?
     
  10. LeonSK

    LeonSK Newbie

    Reputations:
    0
    Messages:
    8
    Likes Received:
    0
    Trophy Points:
    5
    I tried everything it get no lights on everything disconnected only front buttons plate and rear VGA/COM AC vonnected. Installed them to my mk6 and they work. Ill wash mobo with IPA today maybe it helps.

    Sent from my ONEPLUS A6003 using Tapatalk
     
Loading...

Share This Page