BougeRV Acoustic Noise from Contactor or Power Electronics

The charger makes loud buzzing or humming noises during operation.

Safety Warning

This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.

If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.

Possible Causes

Loose mounting of the output contactor, vibrating transformer or inductor in the power module, AC line harmonics causing coil buzz, worn contactor armature.

How to Fix / Troubleshooting

Note: Some low-level hum is normal, but loud or new noises should be investigated.

Step 1 – Identify source: Remove the front cover (with power off) and then power on while carefully listening to locate the noise source (contactor vs. power module).
Step 2 – Tighten mounts: With the power off, tighten mounting screws for the BougeRV output contactor and any large inductors or transformers.
Step 3 – Inspect contactor: Look for signs of wear or misalignment in the contactor armature. Replace the BougeRV output contactor if buzzing is excessive or intermittent.
Step 4 – Check line voltage: Verify that the supply voltage is within spec; undervoltage can increase coil buzz.

Repair Difficulty

Medium 3/5

Required Part

BougeRV Output Contactor

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