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LiftMaster 398LM Smart Control Panel Lights Not Working? Here's the Fix

user image 2025-05-15
By: portworld
Posted in: smart home control panel

LiftMaster 398LM Smart Control Panel Lights Not Working? Here's the Fix

  • Introduction: Panel works, but lights don’t turn on.

  • Causes: LED failure, wiring issues, firmware bug.

  • Fix Steps: Replacing LED, checking circuit, updating firmware.

  • When to Replace: Panel age, repeated failures.

  • Portworld Comparison: Higher quality LED life and power management.

  • Conclusion: Cost-benefit of replacement vs. repair.

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