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Part Number: 55S421LDAA-MAIN
Board Numbers: 40-MST10F-MAA2HG, 08-MST1003-MA200AA,
Part Type: Main Board
TV Models: TCL (you must match your version)
55S421LDAA, 55S421, 55S421TDAA, 55S425LFBA,
Note: YOU MUST MATCH THE SERIAL NUMBER OR VERSION IN OUR LISTING TO THE ONE FOUND ON THE STICKER ON THE BACK OF YOUR TV, IF WE PROVIDE THE SERIAL OR VERSION IN OUR LISTING!
PLEASE MATCH YOUR TV’s PART NUMBERS, TV MODEL AND TV VERSION BEFORE ORDERING! ALL OF OUR TV PARTS ARE STAMPED/WATERMARKED. ANY TV PARTS RETURNED WITHOUT THE DIRECT TV PARTS STAMP OR WATERMARK WILL NOT BE ACCEPTED. WE WILL DISPUTE RETURNS WITHOUT THE DIRECT TV PARTS STAMP/WATERMARK ON THE PLATFORM THAT YOUR PURCHASE WAS MADE FROM.
This is a STOCK photo. The TV board that you receive may vary in color, markings and removable cables. Please read details before ordering.
Please check board numbers to confirm you are ordering the correct part. Please refer to product description to ensure that this part will work with your brand model and version before purchasing. Sometimes parts will work for multiple brands and sizes. There can be multiple different parts that are substitutes and will work in place of the part you are looking for.
Please match your board numbers and TV model and version (if applicable) before ordering. Sending a picture to email@example.com will help us confirm that you are ordering the correct part before placing your order. Please provide the TV model and version, main board number, and also attach a clear, close-up photo of the label on the back of your TV, and a clear, close-up photo of any white stickers on your original board, along with the original problem with your TV. This will help us ensure that you order the correct part for your TV.
All of our parts come from cracked screen tvs or tvs that were repaired and never picked up. They can not be considered new. They have been tested or refurbished and are in good working condition. Older parts come from working repaired televisions that were never picked up or from repair shops that went out of business and we purchased their inventory.
Circuit Boards for smart TV's may require a software update if the circuit board does not work properly after you install it. Please visit the manufacturer's support website for the latest software update instructions. Sometimes you must complete the software installation update multiple times before it is successfully uploaded.Click here to view our Software Updates page