We'll admit, it's much easier starting your TV repair journey by looking at the back of your TV and searching by your TV model number. While that's not the worst place to start, once you know which part you need to replace, it's much better to find its part number and search our website with that information. You'll significantly increase your chances of a successful repair and save time and money. Is that enough convincing to open up your TV and get started? We hope so!
If you landed on this page and made it this far, you're probably thinking that your main board might be failing in your TV. Let's first review the main board's purpose in a TV and common main board symptoms.
What is a main board in a TV?
The main board is basically the “brains” of your TV and controls everything, from the audio to video streams. All of the user data and settings are also stored on the main board.
Which symptoms does replacing your main board fix in a TV?
A faulty main board might present several, generic symptoms and it's important to note that these symptoms could be caused by other issues.
- If your TV doesn’t turn on, it could be the main board.
- If your TV turns on but has no video and/or no audio, it could also be the main board.
- If one HDMI input works but others don’t work, it could be the main board.
If you're still unsure if the main board is the culprit, we suggest purchasing one of our complete TV repair kits. These kits have all of the parts for your specific TV.
Main Board Part Number Examples
Let's walk through some major TV brands and where you can find the part number on their main boards. One thing to note is that most circuit boards will have multiple numbers. We do our best to list them on product pages, and we typically highlight the part number on our product images. Generally, you want to look for a part number a sticker. This will be the PCA (Printed Circuit Assembly) number.
The number printed on the board is the PCB (Printed Circuit Board) number. Multiple PCAs can have the same PCB number.