Thank you for viewing. This is an internal circuit board set for the SHARP LC-55U30. This product is recommended for those who have the above-mentioned TV, which has stopped displaying a picture due to a red blinking light. I was able to repair my own TV by replacing the center power supply board, and the TV was revived. (I unfortunately had to dispose of the TV a month later after physically breaking the LCD screen, lol) I originally purchased this from a TV repair shop on Mercari, so there are no issues with its operation. I welcome comments and purchases from those who think they can repair their TV by replacing the parts. No claims and no returns, please.