Model:
XBR-55X900E
Firmware:
PKG6.2676.0070NAA
Issue Description:
About every 10-20 minutes, the screen will black out for 1 frame. This behavior is most obvious/disturbing when watching content with bright color.
Video reference:
The video is captured using a 60 fps cellphone camera. Content is static kindle book.
Link to the video: https://www.youtube.com/watch?v=UYfDfDx1W2s
While in the video, just pass the 1 second mark, only a black horizontal band at the center of the screen blinked/flashed (limitation of the 60fps camera), in real life, the whole screen goes black for about 1 frame.
This issue appears when watching:
- Content through any of the 4 HDMI inports, either 1080P or 4K inputs
- Content using built in app like Youtube
- In Standard, Game, or Graphics mode
None of the following attempts fixed the issue:
- Factory reset
- Using the firmware came with the TV and *not* update
- Update the TV's firmware (currently on PKG6.2676.0070NAA)
- Use external UPS with built in voltage stabilizer
- Adjusting Picture Adjustment settings like Brightness, Motionflow, Local Dimming and others.
- Enabling Developer mode, toggling settings in Developer mode.
Attempted hardware repair/replacement:
TV was serviced once, main board replaced, but the issue was not resolved.
A replacement was sent, but it has the same problem.
At the current stage, with both TVs having the same issue, it's very likely to be caused by a software bug instead of a hardware defect. Of course, it also could be a hardware design flaw.
I'd like to cooperate with Sony engineer/developer if additional info is needed in order to have the issue resolved.
