Brother 14LG549A is the logic control board used in LiftMaster/Chamberlain garage‑door openers. Common failures include burned or cracked surface‑mount components (especially the main microcontroller and power ICs), degraded electrolytic capacitors, and stuck relays that prevent motor drive signals. The board may also exhibit intermittent operation due to loose solder joints or a failing voltage regulator. First‑check diagnostics: verify 12 V input at the board’s power connector, inspect for visible burn marks or corrosion on key components, and test relay contacts and output driver pins with a multimeter before proceeding to component replacement.[oss-gpt-20b] |
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145 Rockwell Place Ct
Tobaccoville, NC 27050
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Industrial Electronic Repair
931-E S. Main St #204
Kernersville, NC 27284
📦 Mailing Address (for invoices or shipped repairs)
No walk-ins accepted.