When your TV starts acting up, knowing what’s inside and how it works can save you time, money, and frustration. From power issues to distorted images, many common problems can be fixed with the right TV replacement part — if you know what to look for. This guide breaks down everything you need to know, from part types to installation and maintenance. Let’s dive in! 📺
Would you rather watch a video? Take a look at one of our helpful YouTube videos on taking the parts out of a Samsung TV:
🔍 Understanding TV Parts and Their Functions
TVs are made up of several key components, each playing a vital role in performance. Here are some of the most common parts you’ll encounter:
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⚡ Power Supply Board – Distributes power to the entire TV
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🧠 Main Board – Processes all inputs and coordinates functions
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⏱️ T-Con Board – Manages pixel timing and image rendering
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💡 LED Driver – Controls backlighting brightness and stability
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📡 Wi-Fi Board – Enables smart TV features and internet connectivity
🔧 TVpartsToday Tip: When you're repairing any model TV, it's important to make sure the part numbers you are ordering MATCH EXACTLY to the part numbers in your set!
⚠️ Identifying Common TV Component Issues
Before you buy a part, it’s essential to diagnose the issue correctly. Here’s a quick breakdown of symptoms and likely causes:
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❌ No power? Check your power supply board and power cord.
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🖼️ No picture? The T-Con or main board may be malfunctioning.
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🌫️ Dim or distorted image? The LED driver or backlight inverter could be the issue.
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🔇 No sound? Check the audio board or built-in speakers.
🧰 TVpartsToday Tip: Not sure which part’s the problem? Use our online repair guides and videos to help you isolate the issue before you buy. Or give us a call!
930-212-1975
🧩 How to Match TV Parts with Your Model
🔢 Finding Your TV’s Model Number
Your TV’s model number is one piece of the puzzle to finding compatible parts. Here’s where to find it:
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Look on the back of the TV for a sticker with numbers like "LG55LN5400".
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Check the manual or original packaging.
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For smart TVs, navigate to Settings > About > Model Info.
🔧 TVpartsToday Tip: Always search using the exact part number to avoid buying incompatible parts. Model numbers alone are not enough!
📐 Why Model Specifications Matter
TV components vary by model. Using the wrong part can lead to:
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⚙️ Poor performance or fit
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❌ Malfunctioning features
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📦 Return delays or added costs
✅ Always match part numbers and model series when shopping.
🌟 Reading Reviews and Ratings
Before hitting "Buy Now":
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🔍 Look for consistent quality in reviews
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📦 Check if the part fixed issues for similar models
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🏆 Prioritize well-rated suppliers with great return policies (like us!)
🛡️ Warranty and Support
Good support makes all the difference. Look for:
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✅ Easy returns
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🎥 Installation videos
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☎️ Responsive customer service
🧰 TVpartsToday Tip: Don’t skimp on support — a small extra cost upfront could save you hours of troubleshooting! Luckily, we offer all of our troubleshooting advice FREE OF CHARGE!
🔧 How to Install TV Replacement Parts
🛑 Safety First
Before you begin:
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🔌 Unplug the TV
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⚡ Ground yourself to avoid static discharge
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🧹 Clear your workspace
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📸 Take photos of your setup before disassembly
🛠️ Step-by-Step Installation
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Remove the back panel (usually with a screwdriver)
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Disconnect the faulty part carefully
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Swap in the new part and secure it
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Reconnect cables, referencing your photos
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Test before reattaching the back cover
🤔 Troubleshooting Tips
Still not working?
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🔁 Recheck connections
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🔍 Look for visible damage
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📏 Confirm the part is compatible
🧰 TVpartsToday Tip: A multimeter can help test power and connectivity issues if you're unsure, but it's not required! Voltages can be misleading, so don't hesitate to give us a call.
🧼 Maintaining Your TV for the Long Haul
Prevent issues before they start:
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🧽 Clean vents and screens regularly
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🧊 Keep your TV away from extreme temperatures
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🔌 Use a surge protector
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🔄 Check for firmware updates
🔄 Repair or Replace?
Consider repairing when:
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🧾 It’s cheaper than buying new
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🔧 The fix is simple (like a power board swap)
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🕒 The TV is fairly new
Replace the TV if:
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📺 It’s outdated or repair costs are too high
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♻️ You want to upgrade to newer tech like 4K or smart features
🌱 TVpartsToday Tip: Repairing instead of replacing reduces e-waste — a win for your wallet and the planet!
👨🔧 When to Call in the Pros
If you're dealing with:
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🔥 Burned or melted components
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⚡ High-voltage circuits (like plasma TVs)
In these rare cases, it may be best to call a professional. Many repairs are affordable and may be covered by warranty, so double check with the manufacturer or place of purchase!
💡 Whether you’re repairing a Sanyo, Samsung, LG, or Vizio TV, understanding the parts and processes behind your screen makes every repair smoother. Use this guide as your go-to resource for finding and installing the right TV replacement parts, the safe way!
💬 Need Help?
If you’re still unsure about the issue or need to replace a part, reach out to TVpartsToday. We can help you identify the exact cause of the problem and provide the right replacement part!
Would you rather watch a video? Check out our helpful Troubleshooting 101 playlist over on YouTube!
Would you rather chat with a seasoned repair expert? Head on over to our TVRepairHelp subReddit!
📦 Need help finding the right board or part?
📞 Call us at 930-212-1975 or browse our inventory online.
🛠️ DIY-friendly parts, fast shipping, and expert support – only at TVpartsToday.