IMPORTANT: These main boards can have multiple failures, in addition to the EEPROM. If EEPROM replacement does not repair your board, there are likely additional problems. Symptoms EEPROM replacement MAY fix: - On screen display is stuck on logo screen - TV won't power on with remote or buttons (LED indicator remains same color) - TV won't turn on after being off for 30+ minutes - TV shuts off by itself during channel scan or when switching inputs - TV turns on and is stuck in color test pattern mode forever - TV turns on but there is no backlight (LED indicator shows TV is on but there is no image)ShopJimmy