Please be sure that the BOARD Part Number and picture on your motherboard is EXACTLY as shown above. Do not match by TV Model. There are possibly several different boards for each model TV. This board has been pulled from a working cracked screen TV. All items are tested and guaranteed to work. This photo is STOCK meaning it may vary slightly from the one you received in color or removable cables. MFR Part Number 1. NO Power Troubleshooting HELP. We are here to help! We offer FREE PROFESSIONAL TECH SUPPORT. The only real way to properly troubleshoot / diagnose is by trial and error since there could be several boards that show similar symptoms and possibly more than 1 board not working. Sometimes the symptoms change. Be patient with questions from us and exchanges! For help with first timers go on YouTube and search “TV Repair Tutorial”. NOTE LG & Vizio TVs must be plugged in for 5 minutes before it will turn on. For main board replacements check firmware upgrades online – We can not pre-install them. Inspect ALL Ribbons and connectors. Any tears or bad connections between boards must be replaced FIRST. If you have any of these boards, it should be the first board to be replaced A T-Con Board – Video Problems (No Video with standby light on, audio but no video, grainy, distorted, or color problems in screen) B X or Y Buffer Board (Plasma TVs only) – Standby light is on but no power C Backlight Inverter / LED Driver – No Video with standby light on. Main Video Board – Standby light is on but no power – Either video or audio does not work if no T-Con in TV. If audio but no video it is T-Con. Power Board – No power AND standby light does NOT turn on. If standby light is on try other boards above. Panel – No power, distorted picture, lines, slow motion, half screen, faded in / out. Panel problems are usually not worth replacing the panel. We are not responsible for this. Accepted best offers are required to pay within 3 days before an unpaid item dispute is opened. Once opened, please respond to us through the resolution center as quickly as possible. A small amount of orders will require 48 hours depending on volume of incoming orders. We will contact customer with any delays or complications. FREE PRO TECH SUPPORT! ANTI-SCAM POLICY: All of our products have special stickers on them. Buyers account will be reported for fraud. We ask questions for help with troubleshooting in attempt to help you fix your TV. Please be patient with us. This item is in the category “Consumer Electronics\TV, Video & Home Audio\TV, Video & Audio Parts\TV Boards, Parts & Components”. The seller is “electroparts_warehouse” and is located in this country: US. This item can be shipped worldwide.
- Type: Main Board
- Brand: Vizio
- Model: M3D550SL
- Compatible Brand: For Vizio
- MPN: 3655-0452-0395
- UPC: 666628063645
