When you invest in a premium television like the Samsung QN90B Neo QLED, the last thing you expect is a distracting issue such as screen flickering. Yet, as I found out one evening while watching a movie, even high-end devices can occasionally develop quirks. Below, I’ll walk through my personal experience troubleshooting the flickering problem, combined with practical tips and frequently asked questions that can help you resolve the issue quickly.
The flickering started subtly — at first, I thought it was just a streaming issue. But after switching inputs, the rapid flashes continued. That’s when I realized the TV itself was the culprit. Since this was a relatively new purchase, my first reaction was frustration. However, I also knew that most display issues could be fixed without costly repairs if I followed the right steps.
Before diving into settings, I made sure the issue wasn’t coming from connected devices. I unplugged my gaming console, streaming stick, and even my soundbar. Surprisingly, the flickering persisted even on the home menu, which confirmed it wasn’t external hardware.
If you’re facing a similar issue, here’s what you should do first:
Test the TV with no external devices connected.
Try a different HDMI cable if the flickering only happens with a certain input.
Switch to another power outlet to rule out voltage fluctuations.
Once I confirmed it wasn’t a cable or device problem, I turned to the TV’s settings. Samsung QN90B models have powerful image enhancement features, but sometimes these can cause conflicts.
Disable Eco Mode: Under General & Privacy > Power Saving, turning off energy saving helped stabilize brightness levels.
Change Picture Mode: Moving from Dynamic to Movie mode reduced strain on the panel.
Turn Off Motion Enhancements: Settings like Motion Plus can sometimes exaggerate flicker during fast scenes.
These changes noticeably improved stability, although the flicker didn’t completely disappear at first.
One trick I learned from a fellow Samsung owner was performing a full power cycle. I unplugged the QN90B from the wall, held the power button for 10 seconds, and plugged it back in. This soft reset cleared temporary glitches.
Next, I checked for firmware updates. Samsung regularly pushes fixes for display issues, and indeed, a pending update was waiting. After updating the software, the flicker reduced dramatically.
For guidance on software updates, I found resources on manymanuals.com invaluable. They provide detailed walkthroughs for various Samsung TV models, including the Neo QLED series.
Interestingly, one of my friends had a similar flickering problem with their QN90B, but only while using a cable box. In their case, the solution was to adjust the refresh rate of the external device. By matching it to the TV’s native refresh rate, the flicker disappeared. If your issue is input-specific, don’t overlook the settings of the connected device.
If none of the above works, Samsung allows you to reset picture settings to factory defaults. This was a final step I tried just to be sure nothing I had previously changed was interfering. After doing this, the TV behaved normally, and the flickering stopped.
For a quick reference on how to navigate resets, manuals.online provides step-by-step instructions that make the process straightforward. I bookmarked their Samsung manuals section for future troubleshooting.
Screen flickering can be caused by software glitches, faulty HDMI cables, conflicting image settings, or refresh rate mismatches. In rare cases, it could indicate a hardware defect.
Yes. Samsung frequently releases updates to fix known issues. A firmware update solved part of my problem almost instantly.
Absolutely. If your TV is connected to a power strip or unstable outlet, voltage changes can cause the panel to flicker. Using a surge protector or plugging directly into the wall may help.
If none of the fixes work, reaching out to Samsung support is recommended. In warranty cases, they may arrange for a replacement panel or unit.
Having gone through this troubleshooting journey, I realized how important it is to rely on reliable resources. Websites like manymanuals.de made it easy to cross-check troubleshooting steps in different languages, which was helpful when I wanted to share solutions with a friend abroad. Between that, manuals.online, and manymanuals.com, I always had clear instructions that complemented Samsung’s own support pages.
The flickering issue on my QN90B Neo QLED was eventually resolved by a mix of firmware updates, disabling unnecessary enhancements, and ensuring my setup was stable. While it was stressful at first, the experience taught me that most modern TV issues are solvable with a little patience and the right guidance.
If you’re facing the same challenge, don’t panic — try the steps above, consult reliable manuals, and you’ll likely bring your Samsung QN90B back to flawless performance.
