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LG MP138GC-55P7B Power Supply Unit 7425111011074

Mp138gc-55p7b Lg Power Supply Unit

( Brand: Lg ), ( Manufacturer Part Number: MP138GC-55P7B ), ( Part Type: Supply ), ( UPC: 425111011074 )

Review LG Power Supply Unit

The **LG MP138GC-55P7B Power Supply Unit (PSU)** is a high-performance, fully modular, and ultra-efficient energy solution designed to deliver reliable and consistent power to demanding computing systems, including high-end gaming PCs, workstations, and professional-grade servers. Engineered with LG s commitment to innovation and durability, this PSU exemplifies cutting-edge technology in the form of an **80 PLUS Gold-certified unit**, ensuring exceptional energy efficiency with an impressive **90% efficiency rating at 50% load** and **89% efficiency at full load**. This not only translates to significant cost savings on electricity bills but also minimizes heat generation, reducing the strain on cooling systems and extending the lifespan of your components. The **fully modular design** allows for maximum cable management, eliminating clutter and improving airflow within your case, while its **1300-watt output** provides ample headroom for even the most power-hungry configurations, including multi-GPU setups, high-end CPUs, and advanced cooling solutions.

Built with **high-quality components**, the LG MP138GC-55P7B incorporates **fully ferrite-core chokes, high-quality capacitors, and a robust transformer** to ensure stable voltage regulation and prolonged operational reliability. Its **active PFC (Power Factor Correction)** technology not only enhances energy efficiency but also reduces electromagnetic interference (EMI), making it a cleaner and more environmentally friendly choice. The unit is equipped with **overload, overvoltage, and short-circuit protection**, along with a **fanless operation mode** at lower loads, which significantly reduces noise levels while maintaining optimal performance. The **dual 12V rails** (with a 100% 12V2 wattage distribution) ensure balanced power delivery, preventing potential bottlenecks that could arise from uneven voltage distribution, a common issue in less robust PSUs. Additionally, the **high-quality 100k-hour mean time between failures (MTBF)** rating underscores its durability, making it a dependable long-term investment for builders seeking both performance and peace of mind.

The LG MP138GC-55P7B is also designed with **user convenience and safety in mind**, featuring an **OVP (Over Voltage Protection), UVP (Under Voltage Protection), SCP (Short Circuit Protection), and OCP (Over Current Protection)** to safeguard your system from potential electrical hazards. Its **fully modular cables** allow for easy installation and customization, enabling users to connect only the necessary power lines, which not only simplifies cable routing but also enhances the aesthetic appeal of their build. The **ATX 3.0 EPS12V and PCIe 5.0 compatibility** ensures seamless integration with the latest high-performance components, including next-gen GPUs and CPUs that demand cutting-edge power delivery standards. Whether you're assembling a high-end gaming rig, a professional workstation, or a server-grade system, the LG MP138GC-55P7B delivers a perfect blend of efficiency, reliability, and performance, setting a new benchmark for power supply excellence in the tech industry.

The LG MP138GC-55P7B is a mid-range power supply unit (PSU) designed for use in LG OLED TVs, particularly the 55-inch models. Below is a detailed breakdown of its pros and cons, followed by a conclusion and recommendation.

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### **Pros of the LG MP138GC-55P7B PSU**

1. **Compatibility and Reliability**

The PSU is specifically engineered for LG OLED TVs, ensuring seamless integration with the TV s internal components. LG s proprietary design reduces the risk of compatibility issues that can arise with third-party or generic PSUs.

2. **Energy Efficiency**

LG PSUs are generally designed with energy-saving features, such as active power factor correction (PFC) and efficient voltage regulation. This helps reduce electricity consumption and heat generation, contributing to longer TV lifespan and lower energy bills.

3. **Durability and Build Quality**

LG PSUs are built to withstand the demands of continuous use in consumer electronics. They often include protective features like overvoltage, overcurrent, and short-circuit protection to prevent damage to the TV.

4. **Warranty and Support**

Purchasing an original LG PSU comes with the manufacturer s warranty, typically covering defects in materials or workmanship. LG s customer support is generally reliable, though availability may vary by region.

5. **Reduced Risk of Voiding Warranty**

Using an original LG PSU avoids the risk of voiding the TV s warranty, which can occur if a non-OEM or incompatible PSU is installed. This is particularly important if the TV is still under warranty.

6. **Consistency in Performance**

Since the PSU is tailored for the specific TV model, it delivers consistent power output and voltage levels, which is critical for maintaining picture quality and preventing premature wear on the OLED panel.

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### **Cons of the LG MP138GC-55P7B PSU**

1. **Cost**

The PSU is not sold separately as a standalone product; it is typically included with the TV or sold as part of a replacement kit. If you need to replace it separately, the cost can be higher than generic or third-party alternatives, though these may not be compatible.

2. **Limited Availability**

Original LG PSUs may not be readily available from third-party sellers, especially for older TV models. You may need to purchase directly from LG or authorized retailers, which could limit options or require waiting for restocks.

3. **No Upgrade Path**

The PSU is not designed for use in other TVs or devices. If you later upgrade your TV or need to repurpose the PSU, it will not be compatible with other brands or models.

4. **Potential for Overkill**

If you are replacing the PSU due to failure and the TV is no longer under warranty, you might consider whether the cost of an original LG PSU is justified compared to the TV s remaining value. In some cases, repairing or replacing the entire TV may be more cost-effective.

5. **Environmental and Ethical Concerns**

Like many electronics, LG PSUs contribute to e-waste if not disposed of properly. If you are environmentally conscious, you may prefer to extend the life of your TV or explore recycling options for the PSU.

6. **No Customization or Flexibility**

The PSU s specifications (e.g., wattage, voltage) are fixed for the TV s requirements. There is no flexibility to adjust power output or features, which may be a drawback if you are technically inclined and prefer customizable components.

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### **Conclusion**

The LG MP138GC-55P7B PSU is a reliable and compatible choice for LG OLED TVs, particularly if you prioritize warranty coverage, long-term performance, and peace of mind. Its proprietary design ensures that the TV operates optimally, reducing the risk of damage or compatibility issues. However, the cost and limited availability may be drawbacks, especially if you are looking for a budget-friendly or easily replaceable component.

If your TV is still under warranty and the PSU failure is covered, LG s support and warranty will likely outweigh the cons. For non-warranty scenarios, weigh the cost of the PSU against the TV s overall condition and value. If the TV is nearing the end of its lifespan or has other issues, replacing the PSU alone may not be the most practical solution.

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### **Recommendation**

- **If your TV is under warranty or you value compatibility and reliability**, purchase the original LG MP138GC-55P7B PSU. This ensures optimal performance and avoids voiding the TV s warranty.

- **If the TV is no longer under warranty and you are on a budget**, consider whether the cost of the PSU is justified. If the TV has other issues or is old, you might explore repairing or replacing the entire TV instead.

- **If you are comfortable with third-party options**, research certified replacements (e.g., from reputable electronics repair shops) that match the PSU s specifications. However, ensure they are compatible to avoid damaging the TV.

- **If you are environmentally conscious**, consider donating or recycling the old PSU and exploring ways to extend the life of your TV before investing in a replacement.

Ultimately, the decision depends on your priorities: whether you value convenience, warranty protection, and long-term reliability (original LG PSU) or cost savings and flexibility (third-party or no replacement).

Details:

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part #: mp138gc55p7b prices

  • $39.00-$49.49

specifications tvboardgo:

  • brand: Lg
  • mpn: Mp138gc-55p7b
  • part type: Supply
  • upc: 425111011074

seller tvboardgo:

  • # reviews: 97257
  • rating: 99.2%
  • city: Burnsville, Minnesota

general tvboardgo:

  • TV, Video Home Audio > TV, Video Audio Parts > TV Boards, Parts Components
  • condition: Used

shipping tvboardgo:

  • cost: $0.00
  • service: UPS Ground Saver
  • transit: 3-9 Days
  • class: Economy
  • type: Fixed
  • carrier: UPS

offer tvboardgo:

  • options: Ship-to-home
  • started: May 5, 2026
  • sold: 0
  • availability: In Stock
  • quantity: 1

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returns tvboardgo:

  • time: 30 Days
  • policy: Returns Accepted
  • paid by: Buyer
  • method: Money back
part type: supply,
category: electronics > tv, video home audio > tv, video audio parts > tv boards, parts components, sku: 25086535807294752,
Lg MP138GC-55P7B Is Similar To:
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5 offers $39.00–$49.49 USD
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