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Troubleshooting a Faulty Hisense TV Power Board

Troubleshooting a Faulty Hisense TV Power Board

Tv Parts Today |

⚠️ Common HiSense Power Board Problems

A faulty power board can lead to several frustrating issues with your Hisense TV. Be on the lookout for these common symptoms:

  • 🚫 TV won’t power on or turns off randomly.

  • 🔴 Standby light is off or blinking continuously.

  • 📢 Clicking or buzzing sounds when powering on.

  • 📺 TV turns on but the screen stays black or flickers before shutting down.

⚠️ Safety First: Always unplug your TV before inspecting or working on it. Power boards carry high voltage—even when the TV is turned off.

✅ TVpartsToday Tip:

If your TV intermittently turns off and back on, it could be a sign of capacitor failure - a common issue with aging power boards.

Rather watch a video? Check out a video detailing a similar HiSense repair below:

 


👁️🗨️ Visual Inspection: Spotting Damage Early

Before opening the back panel of your Hisense TV, unplug the power cord and place the TV on a soft, flat surface. Once opened, look for:

  • 🔥 Burn marks or bulging capacitors (cylinder-shaped components).

  • 🎨 Areas of discoloration that may suggest overheating.

  • 🔌 Loose or corroded connectors, especially where power enters the board.

If you notice any of these signs, the power board is likely the issue and may need replacing.

✅ TVpartsToday Tip:

A swollen capacitor looks like a puffed-up top or leaking bottom. These can be replaced individually - but swapping the entire board is often safer and more reliable.


🔧 How to Test the Power Board with a Multimeter

Using a multimeter is a precise way to determine if the power board is still functioning correctly. Here’s how:

  1. ✅ Unplug the TV and remove the back cover.

  2. 🧪 Set the multimeter to the appropriate DC voltage range.

  3. ➕➖ Locate the output terminals on the board labeled V+ and GND (or V-).

  4. 🔌 Place the red probe on V+ and the black on GND.

  5. 📊 Check the voltage reading. It should match what's listed on the power board (usually labeled near the connector).

If the voltage is significantly off or unstable, it may indicate a failing power supply.

✅ TVpartsToday Tip:

If you're replacing a power board, take a photo of the wiring connections before removal. It'll make reinstallation faster and error-free! Voltages can also be misleading, so if you're struggling with this, give us a call!


🖐️ Proper Handling and Setup

  • Always lift the TV from the bottom corners, not the screen.

  • Place it in a cool, dry location with good ventilation.

  • Avoid tight cabinets that restrict airflow.


⚡ Use Surge Protection

  • Plug the TV into a UL-certified surge protector with a high joule rating.

  • Unplug during thunderstorms or extended vacations.

  • Replace surge protectors every 3–5 years, especially after a major surge.


🧽 Routine Cleaning & Maintenance

  • Dust the vents and rear panel with a soft microfiber cloth.

  • Keep the TV on standby mode or unplug when not in use for extended periods.

  • Avoid spraying cleaners directly on the screen or housing.

✅ TVpartsToday Tip:

Place your surge protector where you can easily access and inspect it. Many have indicator lights that show whether they’re still protecting your devices.


📋 Warranty & Repair Services

📃 Know What Your Warranty Covers

  • 🕐 Most Hisense TVs come with a 1-year warranty (check your model's terms).

  • 🧾 Keep the receipt and original box if possible—it helps with claims.

  • ✅ Covers manufacturer defects, but not damage from drops, spills, or power surges.


📨 Filing a Service Request

  1. Gather your model number, serial number, and a description of the issue.

  2. Visit the Hisense Support Portal or call customer service.

  3. Fill in your contact info and service address.

  4. Choose a time slot and confirm the request.


💸 Dealing With Out-of-Warranty Repairs

  • Request a diagnostic report before approving repairs.

  • If the repair cost is over 60% the price of a new TV, consider replacing it!

  • Check out Right to Repair resources if you're comfortable doing repairs yourself.

✅ TVpartsToday Tip:

We stock OEM-compatible Hisense power boards at affordable prices. Check out our catalog if you're planning a DIY repair or want a backup part ready!

💬 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.

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