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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