FXR Power Supply/Control Board
Replacement Instructions
Purpose and Scope
These instructions detail how to replace the FXR inverter power supply/control circuit board.
These instructions extend to FXR2012A, FXR2524A, FXR3048A, VFXR2812A, VFXR3524A,
VFXR3648A, FXR2012E, FXR2024E, FXR2348E, VFXR2612E, VFXR302E, VFXR3048E and other
FXR-class inverters.
Important Safety Instructions
This procedure requires disassembly of the inverter that exposes the circuit board and electronic
components to external elements that are subject to electrostatic discharge. Be sure proper
grounding practices are performed when repairing or replacing electrical devices.
WARNING: Lethal Voltage
Review the system configuration to identify all possible sources of energy. Ensure ALL
sources of power are disconnected before performing any installation or maintenance on
this equipment. Confirm that the terminals are de-energized using a validated voltmeter
(rated for a minimum 1000 Vac and 1000 Vdc) to verify the de-energized condition.
WARNING: Burn Hazard
Internal parts can become hot during operation. Do not remove the cover during
operation or touch any internal parts. Be sure to allow them sufficient time to cool down
before attempting to perform any maintenance.
CAUTION: Equipment Damage
Sensitive electronics inside the equipment can be destroyed by static electricity. Be sure
to discharge any static electricity built up before touching the equipment and wear
appropriate protective gear.
Tools Required
#2 Phillips screwdriver
3/8” flat blade screwdriver
4mm hex wrench
Strap wrench
Long-nose pliers
10mm socket with 12” extension &
torque wrench
10mm wrench (standard and torque)
Parts Included
Power supply/Control circuit board
Power supply (9-volt batteries may be used)
Voltmeter or DVM
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