Dimension Schematic Reading

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  • Document Archive
    Dell Dimension 8200 Schematic
    by Document Archive
    Dell Dimension 8200 Schematic
    LA-1221...
    10-04-2024, 07:48 AM
  • mikey5791
    Tiny Tech ATX480W output power ticking
    by mikey5791
    Hi to all forum members,

    ​​​​​​This psu (Tiny Tech model ATX 480W) had been installed in a very old Windows XP PC but recently i pulled it out as the pc cannot start. To test it, i jumped the green wire and black wire on the 24 pin connector. The psu fan jerk a bit but not spinning. I used my dmm to check dc voltage on output connector wire, the 5v red wire keeps ticking a bit at around dc1v....then drops and ticking again around 1v. It is the same situation with the 12v yellow wire.

    Fyi, i desoldered the secondary side electrolytic cap those over 1000uf...
    02-20-2025, 01:11 AM
  • gjgib
    Help reading schematic voltages input/output
    by gjgib
    Hello, this might be embarassing since I consider it a dumb question but keeps me kinda stuck sometimes in my journey.

    I want to know if there is any post in this forum which explains my questions. A) When, where and how do I know when X voltage line is input or output. Example:


    I'm battling with this IC to understand it's voltages. It's from non-turning-on Lenovo Ideapad 3 15iil05 - NM-D461.

    I see some lines like +5VL / +5VALW / V9B+ / +3VALW being okay and some others like 1.8VALW / +0.6VS / +2.5V_DDR. I just know that some of them are bad or missing,...
    05-06-2024, 08:11 PM
  • 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...
    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
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