Order by part number is highly recommended to avoid ordering an incorrect part. CONDITION OF ACTUAL PARTS. All parts were properly inspected and tested to be R2 ready for reuse therefore, consider them as used. If for any reason you have received a non-working or defective part, you are more than welcome to return them. Your satisfaction is always our top priority and we are working hard to provide the very best customer service to better serve the industry but, we’re not perfect and sometimes we will make a mistake. TIPS FOR TROUBLE SHOOTING. Before jumping into any conclusion please, inspect all of the wires and cables for good connection at all of the connecting points. All of the bad connection must be resolved before moving to troubleshoot other area. Standby light on but, no power for plasma TV only. CHECK THE X & Y BUFFER BOARD. No image with standby light on. Have audio but, no image. Image grainy, distorted and or color problem. Standby light on but, no power. CHECK THE POWER SUPPLY BOARD. No sound, loud noise then TV shuts down, HDMI inputs non-functional, TV will not tune channels, No internet. Connection, Internet apps open and TV locks up. CHECK THE MAIN BOARD. Distorted image, vertical and or horizontal lines, slow motion image, half screen, faded Image. IT IS THE PANEL PROBLEM USUALLY, IT. IS NOT FIXABLE AND NOT WORTH TO REPLACE PANEL THEREFORE, DON’T. IMPORTANT NOTE: Horizontal lines on the screen are very unlikely caused by a bad T-con board. Most likely it indicates a defective LCD panel (screen). SINCERELY THANK YOU VERY MUCH FOR YOUR BUSINESS.