Samsung TV Half Black Screen. To fix a Samsung TV half black screen by either replacing any failed LED backlights or re-soldering any faulty connections between LED strips, or by adding strips of tape to the ribbon cable connecting the T-Con board to the panel to block any faulty clock signals. I'm using a 24" Samsung T240HD monitor connected to the DVI port on my MacBook Pro with no issues at all. Only the 15" display on the MacBook Pro has the LED backlight problem. I'm starting to think that the problem is either the LCD screen or the left I/O board (the small board with the magsafe connector). The power cable for the LED backlight Damaged backlights can lead to dimming issues; if under warranty, contact Samsung support, or consider replacing the backlight LED strips yourself if you’re technically experienced. External devices like laptops or streaming sticks may cause a Samsung TV screen to dim, especially with HDR content; adjusting the device settings or switching My Gear:Samsung S8+: https://amzn.to/2Lsn9HZMic: http://amzn.to/2x5dcIIDJI Mavic: http://amzn.to/2v4Icex-----UK Shoppers: Camera Gear Past 24 Hours: 1. Past 7 Days: 6. Past 30 Days: 15. All Time: 1,132. I just picked up this Samsung UN65MU6290 / PS board # BN44-00873C with no back light but otherwise fully functional (passed the flashlight test). My initial assumption was the LED strips were bad but upon further research apparently the Power Supply board can also be at fault Vay Tiền Nhanh Chỉ Cần Cmnd Nợ Xấu.

samsung led tv backlight issues