Elonex Lumina 32" SMPS Problem

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  • 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
  • Zeonalbasta
    Thinkpad X1 Carbon "LMQ-1MB 12298-2 48.4LY26.021" VCC3M problem
    by Zeonalbasta
    i have a problem with thinkpad X1 carbon gen 2 "LMQ-1MB 12298-2 48.4LY26.021"
    The laptop was turned off because the MOSFET was not transmitting voltage. After checking it turned out that the gate pin on the MOSFET was the problem, because it was producing an inappropriate voltage. and it was discovered that the problem was with the Think engine, so I decided to reprint each pin, and finally the mosfet could work properly. However, there is another problem, even though the voltage has been supplied to the laptop, it still won't turn on, there isn't even an LED indicator. After double...
    09-13-2024, 01:17 PM
  • Zender
    Power good problem in PSU all voltages seems to be OK
    by Zender
    Hi there I just got some Cooler Master mpx-7001-acabw-eu PSU. There is sticker on it so it is not been open ever.

    It have some power good problem, all voltages seems to be ok, but that PG is 0 and blinking on this simple PSU tester, also when on this tester a PSU let out some strange sound inside it ( I can't record it since PSU tester is whistle and covering that sound from PSU ).
    When I try to connect a green and black wire on 24 pin connector a fan on PSU just little move and nothing.

    Here is a video of problem : https://www.youtube.com/watch?v=3cmO8x05...
    08-08-2020, 11:02 AM
  • beetle1303
    Wine Chiller - SMPS issue - fluctuating voltages
    by beetle1303
    My wine chiller, TECNO SW-126LCD, is semi-functional - it powers up, can set temperature, and chilled to the set temperature, and cuts off compressor, etc. It however runs very hot.

    Upon taken out the PSU and did some basic check - 5V output to LCD panel buttons and display is stable, but there is no 12V output to LED lights, and fans.

    Further checks found the secondary side voltage is fluctuating around 8-15V range, but the 7805 regulator seems ok and producing the stable 5V output.

    Checking further on the primary side: Incoming line input to bridge...
    09-04-2023, 10:33 AM
  • Gibon378
    Problem with stopping audio and video for no reason
    by Gibon378
    PC Specs:
    • CPU: Ryzen 5 1600
    • GPU: GTX 1080 Palit JetStream
    • MOBO: ASRock ab350 PRO4
    • RAM: Crucial Ballistix Sport 2x8GB 3000MHz (XMP 2.0)
    • PSU: XFX 650W (don't remember what model)
    • OS SSD: ADATA SP920
    • OS: Windows 10 21H2


    Problem description:
    Hi. I have a problem that has been going on for some time (2-3 years). It's hard to explain what it really is. Sometimes, my computer stops playing music, stops videos (starts buffering on youtube), there is no sound in games and when I minimize the game window and return to the game there is a black screen with window borders...
    11-19-2022, 09:41 AM
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