Disclaimer: Please keep in mind that there are way too many variations between different brands, parts, etc. to list every possible example. If, after using this guide you are still not sure which parts to order, please call in to the office or email us at info@tvpartstoday.com.
If you are preparing to replace a circuit board in your television, there is one step that determines whether your repair succeeds or fails before you even pick up a screwdriver. That step is identifying the exact part number. At TVpartsToday, known as The World's #1 Hub for DIY TV Repair, we have seen countless DIY projects delayed simply because the wrong number was used during ordering. Board numbers may look convincing, but they are not reliable for compatibility. The correct part number is the only way to ensure a proper match and a smooth repair process.
Understanding how each major brand labels its components gives you a major advantage. Once you know where to look and what to ignore, you can move forward with confidence and avoid unnecessary returns or wasted time. Below is a breakdown of the 5 most common TV brands and how to identify their most common part numbers!
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Samsung Part Number Identification
Samsung televisions are often the most straightforward when it comes to identifying replacement parts. Most boards include a clearly printed white barcode sticker that contains the correct part number.
Main boards typically begin with BN94 or BN96, while power supply boards are labeled with BN44 prefixes. T-Con boards are commonly marked with BN95 or sometimes BN96. The key detail to remember is that Samsung also prints board numbers such as BN97 directly onto the board, and these should never be used when ordering a replacement.
The safest approach is to rely on the barcode label and ignore any large printed numbers on the circuit board itself. If the number does not come from a sticker, it is likely not the correct identifier.
Vizio Part Number Identification
Vizio televisions require a bit more attention, but once you understand the pattern, they become manageable. Main boards often display a partial number on the sticker, which must be converted into a full part number by adding a prefix such as 756T.
Power supply boards are easier to recognize, typically starting with ADTV followed by a series of letters and numbers. T-Con boards, however, can vary significantly in format, which makes them one of the more challenging components to identify correctly.
Because of these variations, Vizio repairs often benefit from a second look before ordering. Matching the correct format is essential, and even a small deviation can result in an incompatible part.
LG Part Number Identification
LG televisions use consistent prefixes, but they also include multiple numbers on each board, which can create confusion. Main boards usually carry part numbers beginning with EBT, EBR, or EBU. Power supply boards are identified by EAY prefixes, while T-Con boards commonly use the 6871L format.
One of the most common mistakes with LG repairs is using EAX numbers. These are board numbers used during manufacturing and do not guarantee compatibility. They may appear prominent on the board, but they are not what you should rely on when ordering a replacement.
In some cases, especially with T-Con boards, the prefix may not be fully printed. When this happens, adding the correct prefix manually before searching is necessary to find the exact match.
Sony Part Number Identification
Sony televisions present the most unique challenge when it comes to part identification. Unlike other brands, Sony often does not print the actual part number directly on the board. Instead, you will need to rely on the white barcode sticker, which contains a number that corresponds to the correct part within a database.
These identifiers typically follow a format such as AXXXXXXXA or A-XXXX-XXX-A. Power supply boards are more straightforward, often using a 9-digit number printed clearly on a label. T-Con boards may follow patterns similar to other brands, but Sony’s internal numbering can still vary.
Because of this complexity, using a reliable lookup system or verifying the number before ordering is especially important when working with Sony televisions.
Why Part Number Accuracy Matters
Televisions that share the same model number can still contain different internal components depending on production runs, panel suppliers, or regional variations. This means that even if two TVs look identical on the outside, the boards inside may not be interchangeable.
Ordering based on anything other than the exact part number introduces risk. Incorrect voltage outputs, mismatched firmware, or incompatible connectors can prevent the TV from working or even cause additional damage. Taking the extra time to confirm the correct number eliminates that risk and keeps your repair on track.
Final Thoughts on Getting It Right the First Time
A successful DIY TV repair begins long before installation. It starts with identifying the correct component and ensuring compatibility through the exact part number. Whether you are working on a Samsung, Vizio, LG, or Sony television, understanding how each brand labels its boards gives you a clear advantage and prevents costly mistakes.
At TVpartsToday, we have built our reputation as The World's #1 Hub for DIY TV Repair by helping customers navigate these exact challenges every day. With the right knowledge and attention to detail, you can approach your repair with confidence, avoid unnecessary setbacks, and get your television back up and running the right 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!
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Would you rather explore this information via an interactive guide? Visit our Interactive TV Circuit Board Guide on our website!
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