Question 1

the picture looks really dark and washed out in hdr mode on netflix and disney+, standard mode is fine.

Accepted Answer

DIAGNOSIS Incorrect picture settings for HDR content. The Select Series uses a basic HDR processor that needs manual tuning. FIX While playing HDR content, press the Star (*) button on your remote. Go to Picture Settings. Set Picture Mode to "Bright HDR" or "Vivid HDR." Turn off "Auto Brightness" and "Content Refresh Rate." Set Backlight to 100. IF THAT DIDN'T WORK The HDMI cable or port may not support the bandwidth. Ensure you're using a High-Speed HDMI cable (often labeled with "HDMI" on the cable). Plug into HDMI port 1 on the TV. HEADS UP This model does not have high peak brightness or local dimming. HDR will always look dim compared to more expensive TVs. That's a hardware limitation.

Question 2

how do i clean the screen on this thing without damaging it? the microfiber cloth just smears it.

Accepted Answer

DIAGNOSIS Oils from hands and dust create a film. Using a dry cloth just moves it around. FIX Power off and unplug the TV. Use distilled water only. Lightly dampen a clean, lint-free microfiber cloth. Wipe the screen in straight lines, no circles. Immediately dry with a second clean, dry microfiber cloth. IF THAT DIDN'T WORK For stubborn spots, use a 50/50 mix of distilled white vinegar and distilled water. Dampen the cloth, never spray directly on the screen. Wipe and dry immediately. HEADS UP Never use window cleaner, alcohol, ammonia, or abrasive cloths. They strip the anti-glare coating. This damage is permanent and looks like cloudy patches.

Question 3

there's a weird high-pitched buzzing sound coming from the back of the tv, even when it's off.

Accepted Answer

DIAGNOSIS Coil whine from the power supply board. A component is vibrating at high frequency. FIX Unplug the TV from the wall for 2 minutes. Plug it directly into the wall outlet, not a power strip or surge protector. A poor power source can excite the coils. IF THAT DIDN'T WORK The noise is coming from a specific inductor or transformer on the power board. It's not a safety hazard, but it is annoying. You can try to dampen it with a non-conductive epoxy, but this requires opening the TV and locating the exact component. HEADS UP If the buzzing changes pitch or is accompanied by a burning smell, unplug immediately. That indicates a failing capacitor, which is a fire risk.

Question 4

the wifi keeps disconnecting on my roku tv, have to reboot to get it back, my other devices are fine.

Accepted Answer

DIAGNOSIS This is a common issue with Roku TVs, often caused by a combination of factors. While a failing internal WiFi adapter is possible, it's more frequently due to signal interference, a congested WiFi channel, or a software glitch that causes the TV's network stack to freeze. The fact that your other devices are fine points to a problem localized to the TV's hardware or its interaction with your specific network. FIX Start with a full network reset on the TV. Go to Settings > System > Power > System restart. After it reboots, go to Settings > Network > Set up connection > Wireless. Re-enter your WiFi password. If the problem persists, log into your router's admin page and change the 2.4GHz band to channel 1, 6, or 11, as these have the least overlap. On the TV, also set a static DNS: in Settings > Network, select your network, then "Advanced settings," and change DNS to manual, entering 8.8.8.8 and 8.8.4.4. IF THAT DIDN'T WORK The most reliable solution is to bypass the internal WiFi. Purchase the official Roku Ethernet adapter (model A-3J-1T or compatible for your TV) and connect it to an open port on your router. For a wireless fix, try moving your router at least 3-4 feet away from the TV and any large metal objects. As a last resort, perform a factory reset on the TV (Settings > System > Advanced system settings > Factory reset), which can clear deep software corruption. HEADS UP The placement of your router is critical. Never position it directly behind the TV cabinet or immediately next to large speakers, soundbars, or surge protectors, as the TV's metal shield and electronics create a significant dead zone for WiFi signals.

Question 5

i get this 'insufficient memory' error when trying to add a new channel, how do i clear space?

Accepted Answer

DIAGNOSIS The TV's internal storage is full of cached app data. Roku OS and channels share a small partition. FIX Go to Settings > System > Power > System restart. This clears temporary cache. Then go to Settings > System > Storage and check space. Remove any channels you don't use. IF THAT DIDN'T WORK You need to clear the cache for large streaming apps. Go to the Home screen. Highlight the problematic app, press the Star (*) button on the remote, and select "Remove channel." Then add it back fresh from the channel store. HEADS UP Never "force stop" apps from the settings menu. It can cause system instability. Always use the Remove/Re-add method.

Question 6

tv keeps restarting on its own every 10-15 minutes, stuck in a loop.

Accepted Answer

DIAGNOSIS This restart loop is typically caused by a software corruption from a recent update, a hardware overheating issue due to blocked ventilation, or a failing power supply. Less commonly, it can indicate a deeper hardware fault like a failing eMMC storage chip on the main board. FIX Start with a full power cycle and cooling period. Unplug the TV's power cord from the wall outlet for at least 2 minutes. This fully resets the hardware. While unplugged, inspect and clear any dust from the ventilation slots on the back and sides of the TV. Ensure the TV is not in an enclosed cabinet. Plug the power cord directly into a known-good wall outlet, avoiding power strips or surge protectors for this test. Turn the TV on and observe. If the issue persists, proceed to a software reset: Go to Settings > System > Power and perform a System restart. IF THAT DIDN'T WORK If the restart loop continues, you need to reinstall the TV's operating software. Perform a factory reset. Navigate to Settings > System > Advanced system settings > Factory reset and follow the prompts. This erases all accounts, apps, and settings. If you cannot access the menu, try a hardware factory reset: With the TV unplugged, press and hold the physical reset button (if present, often a pinhole on the back) or the mute button on the TV itself. While holding it, plug the TV back in and continue holding for about 20 seconds until the reset screen appears. After the reset, set up the TV minimally without logging into all your apps immediately to test stability. HEADS UP If the TV consistently restarts during the factory reset process or immediately after, the eMMC flash memory chip on the main board has likely failed. This is a component-level repair requiring a main board replacement, which should be done by a qualified technician.

Question 7

the roku remote just stopped working, no lights when i press buttons, fresh batteries didn't fix it.

Accepted Answer

DIAGNOSIS Since fresh batteries did not resolve the issue and there are no indicator lights, the remote is likely suffering from a power delivery failure, a crashed internal processor, or a complete loss of pairing synchronization with the TV's Bluetooth/IR receiver. FIX Perform a hard power cycle and a forced re-pairing sequence to reset the connection: Unplug the Roku TV from the wall outlet and wait a full 60 seconds to clear the system cache. While the TV is unplugged, remove the batteries from the remote. Plug the TV back into the power source and wait for the home screen to appear. Reinsert the batteries into the remote. If your remote has a pairing button (located inside the battery compartment or on the back), press and hold it for 5 seconds until the status light flashes. Point the remote directly at the TV's IR receiver (bottom bezel) and press the Home button repeatedly. IF THAT DIDN'T WORK If the remote remains unresponsive with no lights, try these alternatives: Check Battery Terminals: Inspect the metal contact tabs inside the remote. If they look flat or compressed, use a small screwdriver or toothpick to gently bend them upward to ensure a tight connection with the batteries. Use the Roku Mobile App: Download the official Roku app on your smartphone. Ensure your phone is on the same Wi-Fi network as the TV to use the app as a fully functional remote. Hardware Replacement: If the remote shows no lights even after terminal adjustment, the internal circuit has failed. Purchase an official Roku Voice Remote. Avoid generic "universal" remotes, as they often lack the specific 4K Select Series shortcuts and voice functionality. HEADS UP Be careful not to over-bend the battery contacts, as snapping the metal tabs will permanently disable the remote and require a full replacement.

Question 8

my roku tv screen is just black but i can hear the sound from the show playing, what's going on?

Accepted Answer

DIAGNOSIS The TV has a picture processing issue, most commonly a failed backlight system. The sound plays because the main board and streaming components are working, but the LEDs that illuminate the LCD panel are not turning on. Less often, the issue can be a fault on the T-Con (Timing Control) board or a loose internal cable. FIX First, perform a power cycle to reset the hardware. Unplug the TV from the wall outlet. Find and press the physical power button on the TV itself (often on the bottom or rear) and hold it for 20 seconds while it's unplugged. Release the button, plug the TV back in, and turn it on with the remote. If the screen remains dark, shine a bright flashlight at an angle on the screen in a dark room. If you can faintly see a menu or image, the backlights are definitively dead. IF THAT DIDN'T WORK If no faint image is visible even with a flashlight, the problem may be with the T-Con board or its connections. This requires opening the TV's back panel. Carefully check that the ribbon cables connecting the T-Con board to the mainboard and the LCD panel are securely seated. A damaged T-Con board would need replacement. If the backlights are confirmed dead, the LED strips behind the LCD panel must be replaced, which is an advanced repair. HEADS UP Replacing the backlights involves removing the extremely fragile LCD panel and diffuser sheets. Any pressure, flexing, or a single crack will permanently ruin the screen. Diagnosing internal boards is safe, but the actual backlight repair is best left to a professional technician.

Roku TV 43 inch Select Series 4K Smart TV

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