42" Spectrincq no power

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  • meraklinetx
    Asus Z97-a power cycle, no boot no cpu voltage
    by meraklinetx
    Hello, I have an asus Z97-A motherboard and it doesn't start which was working properly before, the problem isn't related by ram, ram slots or psu (I changed all and nothing work), the exact problem is when you switch it on , it starts and after 1 seconds (no boot or display picture) it's off and then on cycle continuously until you power it off from psu also it's responding to the power switch for turning it off if you keep pressing it 3 or 4 seconds (power button pin has 3.3v) , also when you start it with eatx 12v socket connected this is happening (power cycle also all voltages are resetting...
    05-10-2023, 06:08 AM
  • Joe24
    2070 Super with crazy power consumption numbers
    by Joe24
    Have a Gigabyte 2070 Super with some bonkers power draw readings. Card runs fine, other than some GPU throttling because of the power numbers. But GPU power always reads too high, more than the power reading for the entire card. And VRAM power always reads way too low, along with PCIe and 6-pin power readings. The 8-pin reading seems plausible.

    Typical readout while running 720p Furmark, 8x AA:

    GPU clock: 1590 MHz
    Mem clock: 1750 MHz
    GPU temp: 58.8 °C
    Hot spot: 71.8 °C
    Fan speed: 33% / 1000 rpm
    Mem used: 454 MB
    GPU load: 97%
    ...
    02-03-2023, 02:07 AM
  • usbdevice
    Acer X223HQ (Version Bbd) on/off-power-cycling
    by usbdevice
    Hi all

    There's two other threads about this monitor with seemingly the same problem. The problem was resolved in one case by replacing the entire PSU board and in the second one by replacing an unknown IC.

    https://www.badcaps.net/forum/showthread.php?t=50657
    https://www.badcaps.net/forum/showthread.php?t=40512

    The first one has pictures of the pcbs and I noticed that there's one IC and assorted caps not populated on mine (but the PCB itself looks identical) so I thought that'd warrant a new thread.

    It's my dad's old monitor. He...
    08-05-2022, 02:21 AM
  • JimBanville
    Definitive technology SC 2000 subwoofer amp's power supply clicking and popping
    by JimBanville
    The sub developed a constant popping every couple seconds from woofer and power LED flickering with nothing but wall AC connected. Connecting an audio cable didn't change anything. It doesn't play but a second or two of audio in between the pops.
    Opened it up and discovered the power supply is making a faint clicking or ticking sound.
    I measured the amp's output to the woofer and it pulses up to 50mv DC to be driver. The pulses coincide with the power supply ticking/clicking.
    I measured the power supply output going to the amp board and it too has this pulsing. Voltage cycles...
    09-13-2023, 07:21 AM
  • MyBrainIsAStrainer
    Asrock H87-Pro4 Rev. G/A 1.04: Power cycling on reset only
    by MyBrainIsAStrainer
    Hi!

    I have a weird one for you. I have a H87-Pro4 from Asrock that power cycles. But only when you do a restart after it was already running!

    Symptoms in detail:
    1. I switch off the ATX PSU for ~15-20 seconds, then switch it back on again.
    2. I press power button. The board boots without issues.
    3. I can shut down the board any way I want (via OS* menu, or pushing the power button - either in the OS or the boot manager).
    4. Push power button again, board boots fine.
    5. This shutdown/powerup can be repeated multiple times without problems.
    6. BUT: If I do a restart instead
    ...
    06-25-2023, 02:44 PM
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