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Replacing the PSN6.5 Power Supply

Frequently Asked Questions

Written by Daniel Fabriczy

Updated at April 8th, 2026

Table of Contents

Brand: Models: Question:   Answer: Additional Information:

Brand:

  • AMX

Models:

PSN6.5 (FG423-41 / FG423-43)

PSR7 (FG423-49)

NX series

NI-X000 series

NI-x100 series

NI-x00 series


Question:  

What is the current replacement for the PSN6.5 power supply?


Answer:

The PSN6.5 is discontinued and cannot be repaired.

 It has been replaced by the PSR7 (SKU: FG423-49).

 This unit is the official replacement for powering the NX4200 and associated NetLinx devices.


Additional Information:

  • The PSR7-V provides 5.5 Amps at 12VDC and features updated protection against over-voltage and thermal damage.
  • A key consideration is the PSN power supplies provided 13.5 volts to account for long wire runs and voltage drop. The PSR series provide 12 volts so some long wire runs may be effected requiring a local power supply to that area.

Related Videos

power supply psn6.5 replacement

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