LIEBERT/EMERSON 02-790871-30 Display Controller Circuit Board P/l
( Brand: Liebert/emerson ), ( Manufacturer Part Number: 02-790871-30 ), ( Part Type: Display Circuit Controller Board )
Review LIEBERT/EMERSON Display Controller Circuit Board Rev P/l
The **Liebert/Emerson 02-790871-30 Display Controller Circuit Board** is a precision-engineered component designed to serve as the central nervous system for Emerson s advanced UPS (Uninterruptible Power Supply) systems, specifically models within the Liebert GXT and GXTi series. This high-reliability circuit board plays a critical role in managing real-time power monitoring, user interface functionality, and system diagnostics, ensuring seamless operation and fault-free performance in critical environments such as data centers, telecommunications hubs, and industrial facilities. Crafted with Emerson s rigorous engineering standards, the board integrates a sophisticated microcontroller-based architecture that processes input signals from voltage sensors, current transformers, and temperature probes, translating raw data into intuitive visual cues on the UPS s front-panel display. Its robust design incorporates surface-mount technology (SMT) components, including high-speed analog-to-digital converters (ADCs) and low-power digital signal processors (DSPs), which enable precise measurement and rapid response to power fluctuations whether during normal operation, battery backup, or transfer to alternate power sources.
Beyond its core functionality, the **02-790871-30** is engineered for durability and longevity, featuring a compact yet densely populated PCB (Printed Circuit Board) layout that minimizes signal interference while maximizing efficiency. The board s firmware is optimized for Emerson s proprietary communication protocols, ensuring compatibility with the UPS s LCD or LED display modules, as well as third-party monitoring systems via serial or Ethernet interfaces. This modular flexibility allows for easy integration with building management systems (BMS) or remote monitoring solutions, enhancing operational transparency and predictive maintenance capabilities. Additionally, the circuit board incorporates protective circuitry, such as voltage regulators and ESD (electrostatic discharge) safeguards, to mitigate risks from power surges, transient spikes, or environmental stressors, thereby extending the lifespan of both the board and the UPS system as a whole.
For technicians and maintenance personnel, the **02-790871-30** represents a vital replacement part, ensuring that Emerson UPS units continue to deliver uninterrupted power protection with minimal downtime. Its design adheres to strict industry standards for electromagnetic compatibility (EMC) and environmental resilience, making it suitable for deployment in harsh conditions, including temperature variations and humidity fluctuations. Whether replacing a failed unit or upgrading an existing system, this display controller circuit board exemplifies Emerson s commitment to reliability, innovation, and performance delivering the precision and dependability required to safeguard critical infrastructure against power-related disruptions.
**Pros and Cons of buying a Liebert/Emerson 02-790871-30 Display Controller Circuit Board (P/L)**
### **Pros**
1. **Compatibility and Reliability** This part is designed specifically for Emerson/Liebert UPS systems, ensuring seamless integration with your existing infrastructure. Emerson is a well-established brand with a strong reputation for quality and durability in critical power solutions.
2. **Warranty and Support** Emerson offers warranty coverage (typically 1 3 years, depending on the model and purchase conditions) and access to technical support. Authorized dealers and Emerson s customer service can provide diagnostics, replacements, or troubleshooting assistance.
3. **Prevents System Failures** A faulty display controller can lead to UPS malfunctions, power interruptions, or incorrect monitoring. Replacing it proactively can extend the lifespan of your UPS and avoid costly downtime.
4. **Ease of Replacement** The part is modular, meaning it can often be swapped out without requiring extensive UPS disassembly. Emerson provides documentation and part numbers to simplify the process.
5. **Cost-Effective Long-Term Solution** While the upfront cost may seem high, replacing a failed component is often cheaper than repairing a damaged UPS or losing data due to power issues.
6. **Access to Original Equipment Manufacturer (OEM) Parts** Purchasing from Emerson or an authorized distributor ensures you get a genuine part, reducing the risk of counterfeit or incompatible replacements.
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### **Cons**
1. **High Upfront Cost** Emerson/Liebert parts are premium-priced, which may be a barrier for smaller businesses or individuals on a tight budget. Prices can range from **$200 $600 **, depending on availability and sourcing.
2. **Limited Availability** New stock may not always be in immediate supply, especially for older UPS models. You may need to order from Emerson directly, an authorized distributor, or a third-party reseller, which could introduce delays.
3. **Potential for Counterfeit Parts** If purchasing from unverified sellers (e.g., eBay, Amazon, or unknown resellers), there s a risk of receiving fake or refurbished parts that don t meet Emerson s standards. Always buy from authorized sources.
4. **Technical Complexity** Replacing the circuit board may require basic electrical knowledge or assistance from a technician, especially if the UPS is mounted in a hard-to-reach location or lacks clear documentation.
5. **Warranty Limitations** If the UPS itself is out of warranty, you ll bear the full cost of the replacement. Some Emerson warranties exclude labor or may require proof of purchase.
6. **Alternative Solutions May Exist** In some cases, a simpler fix (e.g., firmware update, resetting the UPS, or replacing a less expensive component) might resolve the issue without needing a full circuit board swap.
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### **Ending Conclusion**
The **Liebert/Emerson 02-790871-30 Display Controller Circuit Board** is a **critical replacement part** for maintaining the functionality of your UPS system. Its **reliability, compatibility, and support** make it a strong choice for businesses or individuals who prioritize uptime and long-term performance. However, the **high cost, potential availability issues, and technical considerations** mean it s not always the most convenient option.
If your UPS is **frequently failing, displaying errors, or losing monitoring capabilities**, this replacement is justified. If the issue is minor (e.g., a loose connection or software glitch), exploring cheaper alternatives first may be prudent.
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### **Recommendation**
1. **Verify the Issue** Confirm that the display controller is indeed the faulty component before purchasing. Check for error codes, test the UPS with a known-good part (if available), or consult Emerson s troubleshooting guides.
2. **Purchase from Authorized Sources**
- **Emerson s official website** ( Emerson Network Power (https://www.emerson.com/en-us))
- **Authorized distributors** (e.g., UPS dealers, RS Components, Mouser, or local Emerson partners)
- **Certified refurbished suppliers** (if budget is a concern, but ensure they come with a warranty)
3. **Consider Third-Party Options (If Necessary)**
- If Emerson parts are unavailable, explore **compatible aftermarket replacements** (e.g., from brands like APC or other UPS manufacturers) that may offer similar functionality at a lower cost. However, **test compatibility** thoroughly before installation.
4. **DIY vs. Professional Installation**
- If you re comfortable with basic electronics, proceed with the replacement yourself using Emerson s installation guide.
- If unsure, **contact an Emerson-certified technician** to avoid voiding warranties or causing further damage.
5. **Budget for Future Maintenance** Since UPS components degrade over time, allocate funds for **regular inspections and part replacements** to prevent unexpected failures.
**Final Verdict:** **Buy the Emerson 02-790871-30 if:**- Your UPS is critical to operations.
- The part is confirmed faulty.
- You have access to an authorized source.
**Avoid or explore alternatives if:**- The cost is prohibitive.
- The issue can be resolved with simpler fixes.
- You re unsure about the part s compatibility with your specific UPS model.
Details:
May show some signs of wear due to age and storage.
part #: 0279087130 prices
- $30.00-$159.92
specifications pcbemdev:
- brand: Liebert/emerson
- mpn: 02-790871-30
- part type: Display Circuit Controller Board
offer pcbemdev:
- sold: 0
- best offers: True
- options: Ship-to-home
- quantity: 1
- availability: In Stock
- started: March 30, 2026
returns pcbemdev:
- paid by: Seller
- time: 30 Days
- policy: Returns Accepted
- method: Money back
general pcbemdev:
- Electronic Components Semiconductors > Circuit Boards Prototyping > Printed Circuit Boards PCBs
- condition: Used
payments pcbemdev:
- wallet: Google-pay
- other
- credit card: Discover
seller pcbemdev:
- city: Burlington, North Carolina
- # reviews: 21584
- rating: 99.9%
shipping pcbemdev:
- cost: $0.00
- class: Standard, Expedited, One-day
- carrier: USPS, UPS
- transit: 3-7 Days
- type: Calculated
- service: USPS Ground Advantage, USPS Priority Mail, UPS Ground, UPS Next Day Air
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