Larko 01008 Allister Access Control is the main motherboard assembly for the Larko Mark 1 gate operator, housing LEDs, a built‑in transformer and multiple fuses that feed the logic and power boards. Common failures on this unit include blown fuses, transformer winding loss or insulation breakdown, and solder joint fatigue on the LED driver traces. Begin diagnostics by verifying 24 V DC input to the board, inspecting all fuses for continuity, and checking transformer output voltage with a multimeter; then examine the board visually for burn marks, cracked components, or loose connections before proceeding to I/O loop checks.[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
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