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Fix a Samsung TV black screen with sound by testing the backlight, checking sources, HDMI cables, picture test, Smart Hub, reset, and repair signs.

Fix Samsung Smart Hub apps that hang, freeze, crash, or will not open by power-cycling, reinstalling apps, resetting Smart Hub, checking network, updates, and storage.

Fix Roku Wi-Fi problems by restarting Roku and router, improving signal, using an HDMI extender, reconnecting to the network, checking 2.4GHz, interference, updates, and router firmware.

Compare Roku, Amazon Fire TV, and Apple TV by price, interface, apps, 4K/HDR, remotes, ads, voice assistants, and ecosystem fit.

Open Roku hidden diagnostic screens for Wi-Fi, hardware, temperature, memory, remote diagnostics, and know safer supported menu alternatives.

Fix Roku screen mirroring from Android, Windows, iPhone, or iPad by enabling mirroring, matching Wi-Fi, using the right cast menu, updating Roku, and reducing drops.

Cool down an overheating Roku by improving airflow, using an HDMI extender, restarting, using the wall adapter, and knowing when replacement is smarter.

Troubleshoot common Roku problems including freezing, app crashes, slow menus, remote lag, outages, overheating, storage, updates, and factory reset.

Fix a Roku device or Roku TV with no power by checking wall adapter, TV USB power, outlet, reset button, HDMI input, cable, CEC, and power failure signs.

Fix Roku channels that will not open, freeze, crash, or hang by restarting Roku, updating channels and Roku OS, checking network, reinstalling apps, storage, CEC, and factory reset.