Power supply diagnosis and possible compatibility

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Diagnosing Power Supply Issues: A Guide for Desktop Users

Hello everyone,

Recently, I’ve encountered an issue with my desktop that has left me feeling a bit perplexed. About a week ago, after powering down my computer, it unexpectedly started back up on its own. While the fans were operational, there was no signal to the monitor. Fast forward to today, and my computer has completely refused to power on.

Now, I should mention that I’m more accustomed to repairing bicycles than troubleshooting computer hardware, so I’m reaching out for some guidance.

From my observations, I suspect that the power supply unit (PSU) is the culprit. Does anyone have suggestions on how I can verify this theory? Currently, I’m using an SS-350ET power supply, which I know isn’t top-of-the-line for gaming setups.

If it turns out that the power supply is indeed faulty, I’d like to know what to consider when looking for a suitable replacement. My thinking is that selecting a slightly higher-capacity PSU could enhance efficiency since I wouldn’t be running it at full load. What are your thoughts on this?

I genuinely appreciate any insights or advice you might have. If I’ve overlooked any critical information, please let me know. Thank you for your time!

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One Comment

  1. Hi there,

    Diagnosing power supply issues can sometimes be straightforward but may also require a systematic approach to confirm the fault. Here are some steps you can take:

    • Perform a Basic Check: Ensure your power socket is working by plugging in another device. Also, verify that all power cables are securely connected to your PSU and motherboard.
    • Test the Power Supply: If possible, use a known working power supply to see if your system powers on. Alternatively, you can perform a paperclip test outside of the case, but please exercise caution.
    • Check for Signs of Damage: Look for swollen capacitors or burnt smells. These are indications of PSU failure.
    • Use a PSU Tester or Multimeter: A dedicated PSU tester or multimeter can help verify if your PSU is delivering the correct voltages (e.g., +12V, +5V, +3.3V).

    Regarding your considerations for replacement:

    • Capacity: Choosing a power supply with a higher wattage rating than your current one can provide headroom for future upgrades and improve efficiency. For example
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