The Haas SM46063104 is a power‑distribution PCB that monitors the 115 VAC output of the main transformer (TB 94/95) and generates a proportional 0–5 VDC reference for the NGC controller. Common failures include degraded transformer windings, damaged voltage‑sense resistors or op‑amp failure causing erratic line‑voltage gauge readings; overheating can also burn out the reference regulator IC. First‑check steps: verify the input AC voltage and transformer secondary output with a multimeter, inspect the reference voltage rail for correct 0–5 VDC under load, and examine the board for visible scorch marks or cracked solder joints on the sense network.[oss-gpt-20b] |
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HAAS 4015H-F Servo AmplifierIndustrial Electronic Repair
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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No walk-ins accepted.