LG 27GL650F Monitor won’t power up

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Troubleshooting Tips for the LG 27GL650F Monitor Power Issue

If you’re having trouble with your LG 27GL650F monitor, you’re not alone. Many users have reported issues with the power supply, and if you find yourself in a similar situation where your monitor simply won’t turn on, you’re in the right place for guidance.

The Problem at Hand

I currently own two LG 27GL650F monitors, and unfortunately, both of them have stopped powering on completely. This is a situation that seems to be relatively shared among LG gaming monitor users, indicating a potential widespread issue. After conducting some basic troubleshooting, I confirmed that the DC input is receiving approximately 19.25 VDC, which suggests that power is reaching the monitor but it still refuses to activate.

Diving into Repairs

While I couldn’t locate a service manual specific to the LG 27GL650F model, I did come across documentation for a similar model: the LG 27GL850. However, the difference in integrated circuit (IC) labeling between the two boards has made it challenging for me to pinpoint the right testing locations for voltage measurements on the board.

As someone who is still learning the ropes of board-level repairs, I find myself at a standstill. The last thing I want is to dispose of these monitors, especially since they perform admirably when functioning.

Seeking Community Insights

If anyone has experience with these monitors or has come across useful resources for troubleshooting power issues in LG gaming monitors, I would greatly appreciate your insights. Any advice on where to start with voltage testing or links to service manuals, community forums, or instructional videos would be incredibly helpful.

Together, let’s find a way to revive these fantastic displays!

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One Comment

  1. Thank you for sharing your detailed experience with the LG 27GL650F monitor power issue. Based on your description, since the DC input is providing around 19.25 VDC, the problem might be related to the internal power distribution or a faulty component on the internal circuit board.

    Here are some steps you can consider to further diagnose the issue:

    • Check Internal Fuses and Protection Circuits: Some monitors have internal fuses or protection circuits that might be blown or malfunctioning. Carefully inspect the power supply board for any blown fuses or damaged components.
    • Verify Voltage Rails: If you have access to a multimeter and a schematic, you can measure voltage rails at various test points. These points are usually marked on the board or documented in service manuals. Since you mentioned difficulty with the IC labeling, look for common test points associated with power management sections.
    • Look for Visible Damage: Inspect the internal boards for any signs of damage, burned components, or leaking capacitors. Replacing damaged parts might restore functionality.
    • Search for Service Manuals or Repair Guides: Although official manuals for the LG 27GL650F might not be publicly available, forums like Frank’s Electronics, iFixit, or Reddit’s r/techsupport might have user-shared guides or similar troubleshooting experiences for related models like the
    Reply

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