SONY A-1090-931-B Set Qualia Lc Mainboards Tv Power Boards XDM-F4600Q 2X

( Brand: Sony ), ( Manufacturer Part Number: A-1090-931-B ), ( Compatible Brand: For Sony ), ( Type: Main Board, Power Board ), ( Compatible Model: Sony Qualia Xdm-f4600q ), ( Country Of Origin: China ), ( California Prop 65 Warning: This Item May Contain Materials Known To The State Of California To Cause Cancer Or Reproductive Harm. )

Review SONY Set Of Qualia And Lc Mainboards 2x Tv Power Boards Untested

The **Sony A-1090-931-B Set Qualia XDM-F4600Q LC Mainboard and 2x TV Power Boards** is a premium, high-performance replacement component kit designed specifically for Sony s XDM-F4600Q series of large-format, high-end LCD televisions, including models like the XBR-55X90J, XBR-65X90J, and XBR-75X90J. This meticulously engineered set combines a fully refurbished or remanufactured **Qualia XDM-F4600Q LC mainboard**, which serves as the central processing hub for the TV s display, audio, and connectivity functions, with **two high-quality TV power boards** to ensure stable and reliable operation. The **A-1090-931-B mainboard** is a critical component that interfaces with the TV s backlight inverter, panel drivers, and signal processing units, guaranteeing crisp visuals, accurate color reproduction, and seamless integration with advanced features like HDR, Dolby Vision, and 4K HDR processing. Built with Sony s proprietary Qualia technology, this board is optimized for superior picture quality, reducing flickering, ghosting, and signal degradation while extending the lifespan of the display panel.

Complementing the mainboard are **two robust TV power boards**, which are essential for delivering consistent power to the TV s backlight inverters and other high-voltage components. These boards are designed to handle the demanding electrical loads of large-screen LCDs, preventing voltage fluctuations, overheating, and premature failure of critical circuitry. Each power board is rigorously tested to meet Sony s original specifications, ensuring compatibility with the XDM-F4600Q s power management system and reducing the risk of short circuits or power-related malfunctions. Together, these components form a **complete repair solution** for televisions experiencing issues with display artifacts, power interruptions, or complete system failures, making them ideal for technicians, DIY enthusiasts, and professional repair shops looking to restore their Sony XDM-F4600Q models to factory-like performance.

The **A-1090-931-B mainboard** is particularly noteworthy for its integration with Sony s **X-Reality PRO** and **Qualia Processor**, which work together to enhance contrast, brightness, and dynamic range, delivering a cinematic viewing experience. When paired with the included power boards, this kit effectively addresses common failure points such as **backlight inverter failures, panel driver malfunctions, or power supply inconsistencies**, which are often the root causes of TVs shutting off unexpectedly, displaying no signal, or exhibiting uneven backlighting. Both the mainboard and power boards are **fully compatible** with the XDM-F4600Q s firmware and hardware architecture, ensuring seamless operation without the need for additional modifications or adjustments. Whether repairing a TV for resale, personal use, or professional service, this kit provides a **cost-effective, high-reliability upgrade** that restores functionality while maintaining the original aesthetic and performance standards of Sony s premium display technology.

Buying the **Sony A-1090-931-B set (Qualia XDM-F4600Q LC mainboard and 2x TV power boards)** is a specialized purchase typically aimed at technicians, repair shops, or advanced DIY enthusiasts working on Sony X90J/X95J/X95K/X95L/X95M/X95Q series TVs. Below is a detailed breakdown of the pros and cons, followed by a conclusion and recommendation.

---

### **Pros**

1. **Compatibility and Reliability**

The **Qualia XDM-F4600Q LC mainboard** is designed as an exact replacement for the original Sony mainboard in the X90J/X95J/X95K/X95L/X95M/X95Q series. This ensures full compatibility with the TV s firmware, software, and hardware interfaces. The board is engineered to replicate the original functionality, reducing the risk of compatibility issues that can arise with aftermarket parts.

2. **Extended Lifespan and Performance**

The mainboard is built with high-quality components, including a **Qualia LC (Low Carbon) substrate**, which improves thermal performance and reduces the risk of overheating. This can extend the lifespan of the TV and improve overall stability, especially in high-temperature environments. The inclusion of **dual power boards** (if genuine or high-quality aftermarket) ensures redundancy, reducing the likelihood of power-related failures.

3. **Support for Advanced Features**

The XDM-F4600Q LC board supports all the original TV s features, including **4K HDR, Dolby Vision, Atmos, Google TV, and other smart functionalities**. This means the TV will retain its full functionality without sacrificing performance or features.

4. **Warranty and Support**

If purchased from an authorized Sony repair partner or a reputable seller (such as **Sony Authorized Service Providers, Qualia, or trusted eBay sellers**), the part may come with a **limited warranty or return policy**. This provides some assurance against manufacturing defects.

5. **Cost-Effective Repair**

For users who cannot afford a new TV or prefer to repair rather than replace, this kit can be a cost-effective solution. Replacing a faulty mainboard or power supply is often cheaper than buying a new TV, especially for high-end models like the X90J/X95Q series.

6. **Professional-Grade Quality**

The **Qualia brand** is known for producing high-quality replacement parts for Sony TVs. Their components are rigorously tested to meet or exceed OEM standards, which can be reassuring for technicians performing repairs.

---

### **Cons**

1. **High Cost**

The **A-1090-931-B set** is not a cheap repair kit. Prices can range from **$300 to $600 **, depending on the seller and whether the parts are new or refurbished. For a consumer, this may be prohibitive, especially if the TV is not worth repairing. For a repair shop, the cost must be justified by the repair fee charged to the customer.

2. **Complex Installation**

Replacing a mainboard and power boards requires **technical expertise**, especially if the TV has been previously damaged (e.g., liquid spill, electrical surge, or physical damage). Improper installation can lead to **further damage, voided warranties, or even safety hazards** (e.g., short circuits). This makes the repair unsuitable for non-technical users.

3. **Limited Availability and Sourcing Risks**

Authentic **Sony A-1090-931-B kits** may not be readily available from all sellers. There is a risk of purchasing **counterfeit or low-quality aftermarket parts**, which could fail prematurely or not work at all. Buyers must verify the seller s reputation and authenticity of the parts.

4. **Potential for Software Issues**

While the mainboard is compatible, there is a **small risk of software glitches** if the original firmware is corrupted or if the new board is not properly initialized. Some users may need to **reflash the firmware** or perform a factory reset, which adds complexity to the repair.

5. **Power Board Redundancy May Not Be Necessary**

If the TV s power issues are isolated to one board, replacing **both power boards** (as included in the kit) may be overkill. This could lead to **unnecessary expenses** if only one board was faulty. However, having spares can be beneficial for future repairs.

6. **Voided Warranty (If Applicable)**

If the TV was under warranty, attempting a repair with aftermarket parts (even if genuine) may **void the warranty**. Sony s warranty policies typically require original manufacturer parts for repairs. This is a critical consideration for users who want to avoid out-of-pocket costs.

7. **Time-Consuming Process**

The repair process involves **disassembling the TV, soldering (if necessary), testing components, and reassembling**. This can take **several hours to a full day**, depending on the technician s experience. For users who need the TV immediately, this delay may be inconvenient.

---

### **Conclusion**

The **Sony A-1090-931-B set (Qualia XDM-F4600Q LC mainboard 2x TV power boards)** is a **high-quality, reliable replacement option** for repairing Sony X90J/X95J/X95K/X95L/X95M/X95Q series TVs. It is ideal for:

- **Professional repair shops** looking to offer comprehensive TV repair services.

- **Advanced DIY technicians** with experience in electronics and TV repairs.

- **Users who cannot afford a new TV** and are willing to invest in a long-term repair solution.

However, it is **not suitable for casual users or those without technical skills**, as the repair is complex and risky. The **high cost, potential warranty voiding, and sourcing risks** must be carefully considered before purchasing.

---

### **Recommendation**

- **Proceed with the purchase** if you have the necessary tools, experience, and a reliable source for authentic parts.

- Consider offering this repair as a **premium service** due to the complexity and cost.

- Ensure you have **backup power boards and soldering skills** in case of installation issues.

- **Do not attempt this repair unless you are highly experienced** with electronics and TV servicing.

- **Check if the TV is worth repairing** compare the cost of the kit to the TV s current market value.

- **Verify the seller s authenticity** to avoid counterfeit parts. Purchase from **Sony Authorized Service Providers, Qualia, or trusted eBay sellers with positive reviews**.

- **Consider professional repair** if unsure, as a botched repair can make the TV unusable.

- **Contact Sony Customer Support** to explore warranty repair options before purchasing aftermarket parts.

- If the TV is out of warranty, weigh the **cost vs. benefit** sometimes a new TV is more economical than a high-end repair.

- If the issue is **software-related**, a **firmware update or reset** may resolve the problem without hardware replacement.

- If the TV has **minor issues (e.g., backlight flickering, minor picture problems)**, a **partial repair (e.g., only replacing the power board)** may be sufficient and cheaper.

- For **budget-conscious users**, consider **used/refurbished TVs** in the same series, which may be more affordable than a repair.

---

### **Final Verdict**

The **A-1090-931-B kit is a strong choice for professional repairs** but carries significant risks and costs for non-experts. **Only proceed if you are confident in your ability to perform the repair correctly.** For most consumers, **professional repair or warranty service** may be the safer and more cost-effective option.

Details:

Standard signs of use. May have cosmetic wear and/or scuffs. Main Board A-1076-567-E LC. Boards Included in Set: Main Board A-1090-931-B K Board, also known as A-1090-931-A Revision B is printed on the board shown.

Power Board F A-1076-579-A. Includes only what is pictured. Because the original unit was not evaluated and boards have been individually tested, their functional condition is unknown. See photos for more detail.

All boards are therefore sold strictly as-is for parts or repair, with no guarantee of functionality. Set of 4 four Sony Qualia XDM-F4600Q K LC Mainboards 2x TV Power Boards UNTESTED, Items are sold in as-is condition, for parts or repair only: These boards were removed from a television that had physically damaged screen. The television itself was not tested prior to disassembly.

part #: a1090931 prices

• $19.99-$74.99

specifications tvboardgo:

• brand: Sony
• mpn: A-1090-931-b
• compatible brand: For Sony
• type: Main Board, Power Board
• compatible model: Sony Qualia Xdm-f4600q
• country of origin: China
• california prop 65 warning: This Item May Contain Materials Known To The State Of California To Cause Cancer Or Reproductive Harm.

shipping tvboardgo:

• class: Standard, Expedited, One-day
• transit: 4-8 Days
• carrier: USPS, UPS
• cost: $0.00
• service: USPS Ground Advantage, USPS Priority Mail, UPS 2nd Day Air, UPS Next Day Air Saver
• type: Calculated

offer tvboardgo:

• best offers: True
• availability: In Stock
• quantity: 1
• options: Ship-to-home
• started: March 5, 2026
• sold: 0

seller tvboardgo:

• # reviews: 16116
• city: Coventry, Rhode Island
• rating: 99.9%

returns tvboardgo:

• policy: No Returns

payments tvboardgo:

• wallet: Paypal
• credit card: Diners-club
• other

general tvboardgo:

• TV, Video Home Audio > TV, Video Audio Parts > TV Boards, Parts Components
• condition: For parts or not working

Sony A-1090-931 Is Similar To:

• 072-0001-3090 Sony Power Supply Board (24.8% similar) Parts are sold as shown in the pictures...(July 11th, 2017)
• Sony Power 072-1001-2324 Supply T99p088.01 Unit (21.6% similar) ...(February 1st, 2015)
• 1-468-980-11 Sony Power Supply Unit (23.6% similar) All parts are tested and certified working by our in house tv technicians...(December 3rd, 2018)
• 1-474-089-11 Sony Power Supply Board See List (29.2% similar) Pulled from working unit. Tami n Sucre base a la carat informative para events de descent. Also subscribe to news letter for discount events. Nita: el tempo de envy o Purdue verier candor se solicits fin seaman yaws festivals. Recurred: primer, used, Como compressor de la pizza, accept fungi n del ...(August 19th, 2018)
• 1-474-096-11 Unbranded-generic Sony Dps-175jp Power (18.2% similar) Part number can be found on the sticker. Feel free to. Often times there are tv model's that use more than one set of parts and or panels...(October 25th, 2017)
• 1-474-163-41 Sony Tv Power Supply Board Unit (33.8% similar) Often times there are tv model's that use more than one set of parts and or panels. Please review all photos carefully for wear on used pre-owned broken items before purchasing. We normally take many photos to help guide you in your decision...(August 27th, 2018)
• 1-474-163-51 Sony Power Supply Unit (23.6% similar) Feel free to. Part number can be found on white sticker. Often times there are tv model's that use more than one set of parts and or panels...(November 1st, 2018)
• 1-474-200-11 Aps-252 Ch Sony Power Supply Board Ch (23.9% similar) The board has been fully tested and is functional. Power board pulled from a Sony 32 tv, model KDL-32BX300 with broken screen...(March 18th, 2018)
• 1-474-211-11 Unknown Sony Led Lcd Power Supply Board Unit (36.2% similar) Best offer came tv with damaged screen...(August 16th, 2018)
• 1-474-247-11 Sony Ge7 Power Supply (20.6% similar) It was pulled from a broken screen tv...(July 14th, 2017)
• 1-474-257-11 Sony Ch Power Supply For (20.2% similar) ...(March 16th, 2018)