In need help of finding schematic for PSU

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  • cheeky2
    Samsung BN44-00262A H37F1-9SS power supply help finding blown value components!
    by cheeky2
    This Samsung combined power supply and inverter was replaced a while ago from a Samsung 37inch LE37B530P7W TV. However I would like to repair this one.
    I have replaced the Mosfets Q1820 and Q1821 ( FDPF7N50U) which were both blown and the fuse FM802S. The schematic for this power supply that is attached doesn't relate to this power supply as the driving transistors and diodes are D1830, D1831, D1832, D1833, Q1811 & Q1810 are nowhere on the schematic!
    Does anyone know what the components for D1830, D1831, D1832, D1833, Q1811 & Q1810 should be? I ask as I did change the Mosfets...
    06-15-2025, 05:12 AM
  • TinkerTron
    Schematic vs. Reality: Where Are the Resistors on My Sharp Clock Radio? Model FY-70CH
    by TinkerTron
    Hey everyone,

    I'm currently working on a mid-70s Sharp Electronic Digital Clock Radio, Model FY-70CH. I found the service manual online, printed it out, and have been studying it for a while. My main reasons for tackling this are: (1) I want to learn electronics and figured I'd start with something I had on hand, and (2) I want to fix its issues. Right now, the radio sounds awful, has about 5V DC at the speaker terminals, and the alarm time setting doesn't work. But I'm not asking how to fix these problems.

    Instead, here's what's been bugging me so far:
    The schematic...
    3 Photos
    03-06-2025, 02:03 PM
  • atunguyd
    Acer x163w Monitor PSU schematic
    by atunguyd
    Ii wonder if anyone can help me. I have a Acer x163w monitor which is not powering up. The PSU main capacitor's one leg had completly come off - I replaced it but the PSU is still not outputting DC. I found the monitor in questions service manual here on manuals lib but the schematic in there is a completely different - the schematic shows no mosfet to drive the transformer while the one I have does use a mosfet - also the schematic shows only one optocoupler but mine has two.
    The PSU board is labelled FM-20A02-AAA made by APD as per the image below. I am trying to find a schematic for this...
    03-05-2025, 02:08 PM
  • Much Bugs
    MSI Z390 A-PRO Schematic and BoardView
    by Much Bugs
    The Schematic and BoardView( *.cad ) of MSI Z390 A-PRO , the board model no is MS-7B98 Rev1.0-1.1 ....
    06-24-2025, 10:13 AM
  • Adv10119
    Need help please! schematic for LA-9982P rev 3.0 (A02)
    by Adv10119
    Please help, i need schematic diagram for Dell inspiron 3537 board LA-9982P rev 3.0 (A02). Specific for A02.

    I have a one beep with no display problem. Did reprogrammed the bios but no luck. i tried to troubleshoot using rev 3.0 (A08) version schematic and boardview but there's components/rails in the schematic that is none in my actual board, this is why I'm having problem checking every power rail needed if ok. attached is the photo of my actual board.

    I'm not sure if A02 and A08 is really different schematic version from each other, but I have to try....
    01-31-2024, 01:18 AM
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