Benq FP72E completely dead

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  • max-power
    Dell E6540 laptop completely dead after dssasembly
    by max-power
    Hi, I disassemble my laptop to replace the speakers, to access them, you have to remove everything including the heat sink and fan, unscrew the motherboard, lift it up a bit to access the speaker wire.
    that was not the first time I dissasemble it, i did replace the same speaker a few year ago and I repaste it last year, so I had nothing to worry about. but when I put everything back together, its completely dead.

    After a bit of investigating, i found one pin of the status led ribbon cable that was unglued from the cable and bend touching another pin, I bend it back at his place...
    03-24-2025, 08:49 AM
  • wangbreeze
    T480s random shutoff and then completely dead
    by wangbreeze
    Hello Gurus,

    I got a ThinkPad T480s. It was running fine but suddenly started random shut down. When it turned off, I had to push the reset pin to bring it back to life. But it got aggressively worse and became completely dead. No charging light, no life.

    I did some initial diagnostics with just the board (no battery, nothing attached, and no CMOS battery as well)

    Initial testing of the coil resistance seems to indicate no dead short. The only low resistance I measured was at PL701. It reads 38 ohms.
    charger gave - 20V - ok

    U101B
    ...
    02-03-2024, 04:57 PM
  • pavski
    Completely dead MSI z490 tomahawk
    by pavski
    Trying to troubleshoot MSI z490 tomahawk board and would appreciate your help. The board is completely dead and shows no activity when the power button is pressed.

    I have tried to look at the Superio, the PSIN signal seems to be correct (goes from 3.3V to 0 on button press) but the voltage on PSOUT pin is quite low. I

    t is only 0.8V which seems to be incorrect but goes to 0 when the button is pressed.

    Can you please let me know if this is indeed incorrect and what else should I look at next?

    Thanks!
    06-02-2024, 02:42 PM
  • Andreasbest
    Lenovo Thinkpad T14s completely dead.
    by Andreasbest
    Hello.
    I received a T14s Gen1 ( NM-C891 motherboard ) that is completely dead, no indication of life at all.
    I tried hard reset without RTC battery and short both pins of it for 1 minute but no luck.
    Since it's type C connector i have no idea what to measure or where to inject voltage, so any advice are welcomed
    Thank you in advance!


    Schematic & boardview -> https://www.badcaps.net/forum/troubl...cfc-nm-c891-sc...
    03-19-2024, 03:18 AM
  • armini
    18VDC PSU completely dead - ZD-915 desoldering station
    by armini
    Hi everyone!

    Three years ago I got a ZD-915 desoldering station which failed just after a few months of light use. During a short desoldering session, the station simply shut down, and since then it has been completely dead and unresponsive. The failure was silent, without any pops.

    Due to a lack of time, I set it aside and didn't look at it.

    Yesterday, I took it apart and did some basic measurements. The 18v terminal shows 0v. In addition, there is no visible damage to the board itself.

    According to replies in 18VDC PSU has dropped to...
    04-25-2023, 07:49 AM
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