screen-flicker
Troubleshooting
Screen flickering on the MEDION 138,8 cm (55 Zoll) QLED Fernseher (Smart-TV, Dolby Vision HDR, VIDAA Store, Prime Video, Disney+, DAZN, Paramount+, DTS X, Dolby Atmos, PVR, Bluetooth, MD 855600)
Source: Samsung TV support — no signal / HDMI
Confidence: 80%
Verified Aug 9, 2026
The screen flickers, often due to a refresh rate issue, a loose cable, or a failing panel.
How to fix Screen flickering
Check the refresh rate
Ensure the source device's refresh rate matches the TV's supported rate.
Source: Samsung TV support — no signal / HDMI
Confidence: 80%
Verified Aug 9, 2026
Check the cable
Reseat the HDMI cable and try a different port.
Source: Samsung TV support — no signal / HDMI
Confidence: 80%
Verified Aug 9, 2026
Replacement parts for the MEDION 138,8 cm (55 Zoll) QLED Fernseher (Smart-TV, Dolby Vision HDR, VIDAA Store, Prime Video, Disney+, DAZN, Paramount+, DTS X, Dolby Atmos, PVR, Bluetooth, MD 855600)
MEDION X8552504 Remote Control
MEDION X8552504 Stand
MEDION X8552504 Power Cable
MEDION X8552504 Wall Mount
MEDION X8552504 HDMI Cable
As an Amazon Associate we earn from qualifying purchases. Prices and availability are accurate as of the time shown and may change. We research product data independently.