Roku Device Features, Settings & Updates

Help configuring Roku device settings, using Roku OS features such as screen mirroring, adjusting display type and audio settings, using Guest Mode, and assistance with software updates.
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Level 8

TCL 65R615 Backlight Problem.

Hi Everyone, I want to see if I’m the only one having this issue, when I'm watching video through any HDMI input, (I have a PC in one, and Xbox 360 in another one) if I exit to the home menu, when the video is still playing, the backlight system get messed up and suddenly rows of back lights stop working, the only way to reset the problem is to restart the TV. Are you guys aware of this problem? Is it a TCL issue? Can it be resolved with firmware update?
The first time it happened I though my TV was busted, thankfully it recovers after powering down.

This is my set up.

TCL 65 R615 with CEC/ARC enabled (Dolby Digital/DTS pass-through)

Model 7121X – Software Version 9.4.0 build 4200-30

Yamaha RX-V671 – CEC/ARC enabled

Thanks for your attention on this.

My ROKU Information:
TCL Roku TV 65 R615
Model 7121X
Software Version 9.4.0 | Build 4200-30
Roku Ultra
Model 4640X
Software Version 9.4.0 | Build 4200-29
0 Kudos