Boards: When (and When Not) to Replace the Boards on Your Appliances

Boards: When (and When Not) to Replace the Boards on Your Appliances

By PRS Parts Inc.

In modern appliances, the “brain” behind all operations is often the control board—also called a PCB (Printed Circuit Board), electronic control board, or mainboard. These boards govern everything from your washing machine’s spin cycle to your refrigerator’s defrost routine. But when things go wrong, many customers ask: “Should I replace the board—or the whole appliance?” Here’s what you need to know.

What Are Appliance Boards?

Appliance control boards are electronic components that manage key functions based on sensor input and programmed logic. Common types include:

  • Main Control Board – Central to most appliances, managing all operations

  • User Interface Board – Connects buttons, dials, or touchscreens to internal components

  • Inverter Boards – Common in refrigerators and some washers/dryers to regulate compressor or motor speeds

  • Power Boards – Regulate energy distribution

When to Replace the Board

1. When the Appliance Has Power but Isn’t Functioning

If lights come on but nothing else works, or cycles start but don’t finish, the board may be failing. This is particularly common in washers, dishwashers, and ovens.

2. Burnt or Visibly Damaged Board

If you see scorch marks, melted areas, or burnt smells, the board is almost certainly the issue.

3. Error Codes That Trace Back to the Board

Modern appliances may display diagnostic codes pointing to board-related malfunctions. Always refer to your manual or a technician to confirm.

4. After a Power Surge or Lightning Strike

A sudden jolt of electricity can damage sensitive components like boards. If your appliance stopped working after a storm or outage, the board may have been fried.

When NOT to Replace the Board

1. When the Appliance Has Multiple Issues

If your appliance has other major problems—like a failing compressor, damaged drum, or leaky pump—it might not be worth investing in a new board.

2. When the Cost Exceeds 50% of the Appliance’s Value

Board replacements can range from $150 to $500, depending on the appliance and brand. If your appliance is older or out of warranty, a replacement may be more cost-effective.

3. If the Problem Is a Sensor, Not the Board

Sometimes a sensor, thermal fuse, or even a loose wire can cause the board to appear faulty. Misdiagnosing the issue can lead to unnecessary costs.

Pros of Replacing the Board

  • Extends Appliance Life: Replacing the board can add years of performance.

  • Less Waste: You avoid sending an entire appliance to the landfill.

  • OEM Compatibility: OEM (Original Equipment Manufacturer) boards are made to fit and function exactly as the originals.

Cons of Replacing the Board

  • High Cost: Some boards can cost as much as a budget appliance.

  • Labor Intensive: Depending on the appliance, replacement may require disassembly.

  • No Guarantee: If another part is causing the issue, replacing the board won’t help.

Professional Diagnosis is Key

Before you invest in a new board, have your appliance properly diagnosed. At PRS Parts Inc., our certified technicians can help you:

  • Identify whether the board is the actual issue

  • Provide price estimates and alternatives

  • Offer in-store or over-the-phone repair support

We carry OEM replacement boards for most major appliance brands including Whirlpool, GE, LG, Samsung, Frigidaire, and Maytag.

Final Tip

If your appliance is still under manufacturer warranty, never replace a board without checking coverage. You might be eligible for a free replacement or repair.

Visit PRS Parts Inc. at 540 Lagoon Dr. for authentic appliance replacement parts and expert repair assistance. Whether you need a new board or just a second opinion, we’re here to help you fix it right—the first time. Service with the spirit of aloha.

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