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

Diagnosis

The "smearing" effect you are experiencing on your Roku TV 43" Select Series is caused by the accumulation of skin oils (sebum), airborne grease, and static-charged dust particles that have bonded to the screen's anti-reflective coating. When you use a dry microfiber cloth, you aren't removing these oils; you are simply redistributing them across the surface, creating streaks that are highly visible when the backlight is on. Because the Select Series uses a plastic-based polarizer and a specific chemical coating to reduce glare, using a dry cloth on a heavily soiled screen can actually cause "micro-marring." These are tiny scratches created when dust particles are pressed and dragged across the surface. To confirm the cause, look at the screen under a bright flashlight while the TV is off; if you see iridescent "rainbow" swirls, you are dealing with an oil buildup that requires a solvent—specifically a mild polar solvent like distilled water—to break the surface tension and lift the grime.

How to Fix It

To clean the display without stripping the protective coating or causing permanent streaks, follow this precise sequence:

1. Power down the TV and unplug it from the wall outlet. Cleaning a warm screen can cause the liquid to evaporate too quickly, leaving behind mineral streaks.
2. Obtain two high-density, lint-free microfiber cloths (preferably the "flat weave" type used for eyeglasses). Avoid terry-cloth or paper towels, as these contain abrasive fibers.
3. Use distilled water. Tap water contains calcium and magnesium that leave white "spotting" on the 4K panel once dry.
4. Lightly dampen the first cloth. The cloth should be moist to the touch, but not dripping. If you squeeze it and water drops fall, it is too wet. Never spray liquid directly onto the screen, as gravity pulls the fluid into the bottom bezel (the "bezel leak"), which can short out the LED driver board.
5. Wipe the screen using long, slow, horizontal or vertical strokes. Do not use circular motions, as this concentrates the oils in the center of the screen. Apply almost zero pressure; let the moisture do the work.
6. Immediately follow the damp pass with the second, completely dry microfiber cloth. Buff the area gently to remove any remaining moisture before it air-dries.

If That Didn't Work

• For stubborn grease or fingerprints: Create a solution of 50% distilled water and 50% white distilled vinegar. Dampen the cloth with this mixture. The acetic acid in the vinegar breaks down lipids (oils) that water alone cannot move. Use the same "damp then dry" technique described above.
• For "sticky" residue: If there is a sticky substance (like food or adhesive) on the panel, do not scrub. Apply a tiny amount of the vinegar solution to a cotton swab and hold it against the spot for 30 seconds to soften the residue, then gently lift it away with a clean microfiber cloth.
• For deep-seated dust in the bezel: Use a can of compressed air or a soft-bristled makeup brush to clear the gap between the screen and the plastic frame. If dust settles in this crevice, it often migrates back onto the screen during the cleaning process, causing new streaks.

Heads Up

• NEVER use Windex, glass cleaner, or anything containing ammonia or alcohol. These chemicals will permanently dissolve the anti-reflective layer of the Roku Select Series screen, leaving "cloudy" patches that cannot be repaired.
• Avoid "Screen Cleaning Wipes" from big-box stores. Many of these contain undisclosed detergents or alcohols that can cause the plastic screen to yellow or crack over time.
• Check your pressure. The 4K panel is a "sandwich" of layers. Pressing too hard on a single spot can cause "pixel bruising" or permanent dark spots where the liquid crystals have been crushed.
• Maintenance: To prevent buildup, dust the TV weekly with a dry, clean microfiber cloth while the TV is off to prevent dust from bonding with oils.