SONY A-5056-949-A Board 703190879813 XR-65A75L XR-55A75L A5056900A/A5066852A

( Brand: Sony ), ( Manufacturer Part Number: A-5056-949-A ), ( Type: Television Main Board ), ( Compatible Model: Xr-65a75l Xr-55a75l ), ( UPC: 703190879813 )

Review SONY Main Board A5056900a/a5066852a

The **Sony A-5056-949-A XR-65A75L/XR-55A75L Board (A5056900A/A5066852A)** is a high-performance, precision-engineered motherboard designed specifically for Sony s premium **X900H/X950H** and **X90J/X95J** series 4K HDR televisions, as well as select **XR-65A75L/XR-55A75L** models. This board serves as the central nervous system of the television, integrating advanced processing, connectivity, and display technologies to deliver an unparalleled viewing experience. Built with Sony s proprietary **A5056** chipset architecture, it integrates a **Quad-Core CPU** and a **PowerVR GPU**, ensuring seamless 4K upscaling, real-time processing of HDR content, and fluid motion handling for cinematic clarity. The board features a **12G-SDI interface**, enabling high-bandwidth data transfer for professional-grade video inputs, while its **HDMI 2.1 ports** support 4K/120Hz and eARC for immersive audio formats like Dolby Vision and Atmos. A dedicated **Dolby Vision processor** ensures vibrant, high-dynamic-range color reproduction, while the **AI-powered upscaling engine** enhances lower-resolution sources to near-native 4K quality. The board also incorporates **Sony s X-Reality Pro** technology, which dynamically adjusts image processing based on content type whether it s sports, movies, or gaming to optimize contrast, sharpness, and color accuracy. For connectivity, it includes **Wi-Fi 6 and Bluetooth 5.0** for fast, stable wireless performance, along with **Gigabit Ethernet** for wired networking. The **Dolby Atmos processing unit** and **acoustic surface audio** integration further elevate the audio experience, while the **backlight dimming and LED driver circuitry** ensure precise control over brightness and energy efficiency. This board is a testament to Sony s commitment to innovation, blending cutting-edge processing with refined aesthetics to create a television platform that excels in both performance and visual fidelity. Whether used in a home theater, gaming setup, or professional environment, the **A-5056-949-A** board delivers the foundation for a next-generation viewing experience.

### **Pros and Cons of buying a Sony A-5056-949-A (XR-65A75L/XR-55A75L) TV Board (A5056900A/A5066852A)**

#### **Overview**

The **Sony A-5056-949-A** is a mainboard used in the **XR-65A75L** (65-inch) and **XR-55A75L** (55-inch) models, which are part of Sony s **X950H/X950G** series. These TVs feature **4K HDR, Android TV, and Dolby Vision**, making them popular for their performance and smart features. The **A5056900A** (for 65-inch) and **A5066852A** (for 55-inch) are the primary control boards that manage processing, connectivity, and software functionality.

---

### **Pros**

1. **High-Quality 4K HDR Performance**

- The board supports **4K resolution with HDR10 and Dolby Vision**, delivering vibrant colors and deep contrast for movies and gaming.

- Uses **X-Reality PRO** for upscaling lower-resolution content to near-4K quality.

2. **Android TV with Google Assistant & Netflix Integration**

- Runs **Android TV 9.0 (or later)**, providing access to **Netflix, YouTube, Prime Video, and other streaming apps**.

- **Google Assistant** and **voice search** enhance usability.

- **4K streaming** is supported for most major services.

3. **Strong Gaming Capabilities**

- **HDMI 2.0b** supports **4K 60Hz** and **HDR**, making it compatible with **PS4 Pro, Xbox One X, and some PC setups**.

- **Game Mode** reduces input lag for smoother gameplay.

4. **Good Connectivity Options**

- **4 HDMI 2.0b ports** (one with ARC/eARC for soundbar compatibility).

- **2 USB 2.0 ports** (for media playback).

- **Wi-Fi 5 (802.11ac)** and **Bluetooth 4.2** for wireless audio and internet.

- **Ethernet port** for stable wired internet.

5. **Reliable Sony Build Quality**

- Sony TVs are known for **durability and long-term reliability** compared to some budget brands.

- The **X950H/X950G** series has a **good track record** for fewer firmware issues than older Sony models.

6. **Easy Repairability (If Needed)**

- The board is **modular**, meaning if one component fails (e.g., power section, tuner, or processor), it can sometimes be replaced rather than the entire TV.

- **Common issues** (like power supply or backlight failure) are often fixable with parts from eBay or repair shops.

7. **Good Resale Value**

- Since these models are still in demand, a well-maintained unit can fetch a **decent resale price** (especially if it s a **65-inch**).

8. **Minimal Firmware Bloat (Compared to Some Competitors)**

- Unlike some Android TVs, Sony s interface is **cleaner and less intrusive**, with fewer forced ads or unnecessary bloatware.

---

### **Cons**

1. **Potential Firmware & Software Issues**

- Some users report **slowdowns, app crashes, or lag** in Android TV, especially on older firmware versions.

- **Google Play Store restrictions** may prevent some apps from installing (though this is improving).

- **Frequent firmware updates** can sometimes introduce bugs before they re fully fixed.

2. **Limited Upgrade Path for Android TV**

- Unlike some smart TVs, **Sony does not push major Android TV updates** as aggressively, meaning you may miss newer features (e.g., Android 11/12 optimizations).

- **Google Assistant may not work as smoothly** as on newer Android TVs.

3. **Power Supply & Backlight Failures (Common in Older Sony Models)**

- The **X950H/X950G** series has had reports of **power supply failures** (leading to no power or random shutdowns).

- **Backlight bleeding** (common in LED TVs) can occur over time, though it s not unique to Sony.

- If buying a **used/refurbished unit**, **test the power section** before purchasing.

4. **No HDMI 2.1 or VRR/G-Sync Support**

- **No HDMI 2.1**, meaning **no 4K 120Hz** for next-gen consoles (PS5/Xbox Series X).

- **No VRR (Variable Refresh Rate) or ALLM (Auto Low Latency Mode)**, which can be a downside for gamers.

5. **Limited Local Dimming (Compared to Higher-End Sony Models)**

- The **X950H/X950G** uses **edge-lit LED backlighting with local dimming**, but it s **not as precise** as **Full Array Local Dimming (FALD)** found in higher-end Sony models (e.g., A80L, Z9G).

- **Ghosting and blooming** can occur in dark scenes.

6. **Potential Tuner & Input Lag Issues**

- Some users report **tuner problems** (weak signal reception, especially in rural areas).

- **Input lag is higher than some gaming-focused TVs** (around **15-20ms**), which may not be ideal for competitive gaming.

7. **No Built-in Antenna Tuner in Some Regions**

- Depending on the **region code**, the tuner may be **disabled** (common in North America), requiring an external antenna or streaming service.

8. **Refurbished/Used Market Risks**

- If buying **used**, there s a risk of **previously damaged boards** (e.g., fried capacitors, power supply issues).

- **No warranty** on second-hand units, so **testing is crucial** before purchase.

---

### **Common Issues & Fixes (If Buying Used)**

**Issue** **Possible Cause** **Solution**

----------- ------------------- -------------

**No Power** Faulty power supply, loose connections Check capacitors, test power section, replace if needed

**Black Screen / No Signal** Bad HDMI input, processor failure Test HDMI ports, check for loose connections

**Android TV Freezing/Crashing** Overheating, corrupted cache Clean vents, factory reset (if possible)

**Weak/No Sound** Faulty speakers, audio board issue Test HDMI ARC, check speaker connections

**Tuner Not Working** Region lock, weak signal Use an external antenna or streaming

**Backlight Flickering** Power supply issue, LED driver failure Replace power board or LED driver

---

### **Conclusion**

The **Sony A-5056-949-A (XR-65A75L/XR-55A75L) board** is a **solid choice** for those looking for a **4K HDR Android TV** with **good streaming and gaming performance**. It excels in **image quality, smart features, and reliability** compared to many budget alternatives. However, it has **some limitations** in **gaming (no HDMI 2.1), potential firmware quirks, and common hardware failures** (especially in used units).

**Movie lovers** (Dolby Vision, HDR)

**Streaming users** (Netflix, YouTube, Prime Video)

**Budget-conscious buyers** (good value for 4K Android TV)

**Repair enthusiasts** (modular board, replaceable components)

**Gamers needing HDMI 2.1 or VRR** (consider a **Sony XR-75X95K** or **LG C2** instead)

**Those who want the latest Android TV features** (may miss updates)

**People who prioritize ultra-local dimming** (better options in **A80L, Z9G**)

---

### **Final Recommendation**

- **If buying new/official:** The **XR-65A75L/XR-55A75L** is a **great mid-range 4K Android TV** with strong performance for its price. It s a **reliable choice** if you prioritize **picture quality and smart features** over the latest gaming tech.

- **Test thoroughly** (power, HDMI inputs, Android TV responsiveness).

- **Avoid units with power supply or backlight issues** these are the most common failures.

- **Check for firmware updates** some used TVs may run outdated software.

- **Consider a warranty or return policy** if possible.

- **For better gaming

Details:

Compatible model's: Sony XR-65A75L and XR-55A75L 55 65 OLED units. Part Details. A Sony Television Main Board compatible with several high-end OLED model's. Alternative/Board Numbers: A5056900A, A5066852A, or 101227071.

Part Number: A-5056-949-A.

part #: a5056949 prices

• $175.00-$189.89

specifications tvboardgo:

• brand: Sony
• mpn: A-5056-949-a
• type: Television Main Board
• compatible model: Xr-65a75l Xr-55a75l
• upc: 703190879813

general tvboardgo:

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

offer tvboardgo:

• availability: In Stock
• started: April 20, 2026
• quantity: 1
• sold: 0
• options: Ship-to-home

seller tvboardgo:

• rating: 99.2%
• city: Menard, Texas
• # reviews: 1053

payments tvboardgo:

• credit card: Diners-club
• other
• wallet: Google-pay

returns tvboardgo:

• policy: No Returns

shipping tvboardgo:

• class: Expedited
• type: Calculated
• service: USPS Priority Mail
• carrier: USPS
• cost: $12.58
• transit: 2-5 Days

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