Find Sony 1-857-593-31 A Boards / Replacement Main Boards at ShopJimmy.com:
https://www.shopjimmy.com/catalogsearch/result/?q=1-857-593-31

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The Main Board shown in this video is a replacement for the following LCD TV models:

LCD TV Model Numbers:
• SONY KDL-32EX500
• SONY KDL-40EX500
• SONY KDL-40EX501
• SONY KDL-46EX500
• SONY KDL-46EX501

Top Common Sony LCD TV problems for bad A Board / Main Unit Boards:
• No Picture, No Sounds
• Blinking Standby Light
• Bad Picture
• Solarization, Inverted Picture, Contrast Issues
• Missing TV Channels or TV Inputs, Bad Tuner
• Bad HDMI

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TV Repair Made Easy™
© 2012 ShopJimmy.com, LLC.

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Disclaimer:
WARNING! Please make sure that your TV is unplugged, and that you are protected from static electricity. There are various ways to eliminate static electricity, but the most common way is to use a grounding wrist strap. Take photos and notes often to help remember the location and orientation of the parts and wires. And feel free to pause and backtrack through this tutorial as much as needed.

Materials Needed:
To be best prepared to replace the Main Board inside of your TV, you will need the following materials:
• A pair of latex gloves.
• Your ShopJimmy.com replacement Main Board.
• A pair of needle-nose pliers.
• Both a flat-head and phillips screwdriver.
• And a cup to hold all screws, clips, and any other small items. So let's get to it shall we?

Instructions:
• Locate your TVs identification label and take note of the brand name, model number, serial number, and model code if present.
• Unscrew and remove the back cover.
• The main board typically manages your accessory inputs and outputs and houses the TV tuner.
• The Main Board is connected to the T-Con Board via the LVDS cable.
• This Main Board is located on the right side of the chassis.
• Carefully unplug all wires and ribbon cables by hand.
• Unlock the wire connectors by squeezing the tab or tabs and gently remove the wires. Be sure to keep a firm grip with both hands. Please note that the LVDS cable is very fragile. Two hands may be required to release and remove the connector.
• Unscrew and remove your original Main Board from the chassis.
• The part number is not found anywhere on the board.
• Search your TV model number on http://www.shopjimmy.com to find a compatible replacement. Filter your search results by the appropriate part type.
• Click on the search results to view important product specifications.
• Some replacement boards are version or TV specific. Please be sure to look on product pages for notes regarding serial number or part number requirements.
• Verify that your original board matches all requirements noted in the product description prior to purchase.
• Insert all screws to secure your ShopJimmy New Main Board to the chassis.
• Reconnect all cable and ribbon connections.
• Return the back cover to its original position and secure all screws.
• This replacement main board requires a firmware upgrade in order to function. This requires uploading firmware to a USB flash drive. Please refer to download instructions on the product page for more information.

Thank you for watching one of many tutorials here at ShopJimmy.com! If you have any further questions regarding your repair, simply post a question in the comments section below, or call our award-winning customer service team at the number on your screen! We strive to learn and share new TV Repair Tips everyday. Subscribe to our YouTube Channel and grow with us! Share our videos with your friends, and help us spread the savings! And don't forget to hit that Like button!