Simplex 0565-771 Adressable NAC System
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The Simplex 0565‑771 is a 4009 IDNet Notification Appliance Circuit (NAC) extender board that hosts four NACs, an IDNet slave interface and the power/charger circuitry for a Simplex fire alarm control panel. Common failure points include the CPU board (often replaced when the panel stops communicating), the AC/DC power supply or rectifier, and connector pins on the base assembly; these can cause loss of signal or intermittent operation. First‑check diagnostics: verify 120 VAC input to the extender, inspect all connectors for corrosion or loose contacts, and review any error codes displayed on the control panel’s status LEDs.[oss-gpt-20b] |
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We specialize in the repair and refurbishment of high-end industrial control electronics and power systems like this unit.
- ⚙️ Fast Diagnostics – Same-day evaluation available
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- 🔧 Board-level diagnostics (shorts, VRM, memory, fan, thermals)
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Free Estimates • Industrial-grade testing • 1-Year Warranty • Nationwide Service
Other Repaired Units by Simplex
Simplex 565-488B power supply boardSimplex 565-488B power supply boardSimplex 4001 boardSimplex 4001 motherboardSimplex 4009 IDNet NAC ExtenderSimplex 0565-771 Adressable NAC SystemSimplex 4001 4 zone mother boardContact Us
🚑Shop Location🛠️
Industrial Electronic Repair
145 Rockwell Place Ct
Tobaccoville, NC 27050
🚑 Rush repair shipments only — no walk-ins.
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Industrial Electronic Repair
931-E S. Main St #204
Kernersville, NC 27284
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