You just got your Steam Deck. Before you load up your first game — or before your return window closes — take five minutes to check the screen for dead and stuck pixels. It's quick, free, and could save you a lot of frustration down the road.
This guide covers both the Steam Deck LCD (the original 7-inch 800p model) and the Steam Deck OLED (7.4-inch, released late 2023), since dead pixels look and behave differently on each panel type.
Step 1: How to Get to the Browser on Your Steam Deck
The pixel test runs in a web browser, so you need to get there first. There are two ways depending on your model.
Gaming Mode (Both Models)
Press the Steam button → scroll down to Power → select Switch to Desktop. Your Steam Deck will briefly restart into Desktop Mode. From there, open the browser application — it's in the taskbar at the bottom of the screen.
Desktop Mode Browser
In Desktop Mode, you can use Firefox (pre-installed) or Chromium. Either works. Navigate to deadpixelcheck.com and tap the full-screen button to fill the entire Steam Deck display. That's what you want — no borders, no toolbars, just solid color.
Pro tip
If you're testing a brand-new Steam Deck, run the pixel test before you set up your Steam account or install any games. That way if you need to return it, you haven't loaded it up yet.
Step 2: Run the Pixel Test
Once you're in full-screen mode, cycle through these colors one at a time. Spend 10–15 seconds on each, scanning the entire screen slowly:
- White — Look for small black or very dark dots. On the LCD model, dead pixels usually show up here as dark spots because they're not receiving light through the backlight.
- Black — Look for bright-colored dots (red, green, blue, or white). These are stuck pixels — sub-pixels that are stuck in the "on" position.
- Red, Green, Blue — These catch sub-pixel faults that only appear on specific color backgrounds. A pixel that looks fine on white might show a green tint defect on a red background.
Work systematically. Mentally divide the screen into quadrants and scan each one before moving on. Pixel defects are tiny — about the size of a pinhead — and easy to miss if you're just glancing at the screen.
LCD vs. OLED: How Dead Pixels Look Different
This matters because the two Steam Deck models use completely different panel technologies.
Steam Deck LCD (Original)
The original Steam Deck uses an LCD (liquid crystal display) panel with a backlight. A dead pixel on LCD appears as a small black dot on a white background — the crystals in that pixel aren't rotating to let light through. On a black background, you won't see LCD dead pixels at all because the backlight is blocked anyway.
Stuck pixels on LCD appear as a single bright-colored dot (usually red, green, or blue) on a black background. The sub-pixel is stuck in the fully-open position and lets light through regardless of what the image should be.
Steam Deck OLED (Newer Model)
The OLED Steam Deck has self-emitting pixels — each pixel creates its own light, so there's no backlight. A dead OLED pixel doesn't emit any light at all: it appears as a black dot on every background color, including black (where it blends in). This makes OLED dead pixels slightly harder to spot: test primarily on white and bright color backgrounds.
The good news about OLED: stuck pixels are rarer than on LCD, because OLED pixels don't get "stuck" the same way — they either work or they don't. What you're more likely to see on OLED is very early burn-in, which looks different (a faint ghost image, not a dot).
What to Do If You Find a Pixel Defect
Within the Return Window (14 Days)
Steam purchases come with a 14-day return window for hardware. If you're within that window and your Steam Deck has a clear pixel defect, the simplest path is initiating a return through help.steampowered.com. Document the defect — take a photo or screenshot showing the defect clearly on a solid color background — before you return it.
Outside the Return Window (Warranty Claim)
Valve's 1-year limited warranty covers manufacturing defects, which includes pixel defects caused by faulty manufacturing. Submit a support ticket through help.steampowered.com → Steam Deck → Hardware Issues → Screen / Display. Include the photos you took during the test.
Important
Valve hasn't published a specific "minimum dead pixel count" threshold the way some monitor manufacturers do. A single dead pixel in the center of your screen is more likely to be covered than a single dead pixel in the corner. Document everything and let support make the call.
Try Fixing a Stuck Pixel First
If what you found is a stuck pixel (bright dot on a dark background, not a black dot on a bright background), it may be fixable before you escalate to Valve support. Our stuck pixel fix guide covers the pencil eraser method and color-cycling tools that can unstick a pixel without any risk to the rest of the display.
Steam Deck Screen Specs (For Reference)
| Model | Panel Type | Resolution | Total Pixels | Screen Size |
|---|---|---|---|---|
| Steam Deck (Original) | LCD (IPS) | 1280 × 800 | ~1 million | 7.0 inch |
| Steam Deck OLED | OLED | 1280 × 800 | ~1 million | 7.4 inch |
One million pixels sounds like a lot, but at that density and screen size, a single dead pixel is small enough that many users never notice it in normal gaming. The test helps you find defects that are there but invisible in typical content — before you've decided to keep the device.
Once you've verified your screen is clean, a tempered glass screen protector keeps it that way. The best Steam Deck screen protectors are designed for the exact panel dimensions of each model — make sure you buy the right one for LCD or OLED.