Hello,

We are facing problem on 13.3" Wavehsare DSI Display.

We have been running 4K video playback while simultaneously monitoring the processor temperature.

During this testing, we have observed a recurring display instability issue, detailed below.

**Observations:**

1. After extended operation, the display begins to flicker, showing only a black screen, wherein Processor temperature is
around 57 °C .

2. Despite the display going black, audio playback normally continues in the background, indicating that video processing itself was not interrupted.

3. Upon restarting the Panel PC, the display becomes visible again but with a whitish discoloration appearing at the corners of the screen.

4. After some additional time, the display returns to normal and the whitish discoloration disappears on its own.


This issue has been reproduced 4–5 times.

- There is no consistent or predictable time interval between occurrences.

- The defect appears intermittently during testing.

If the problem would have been with processor then the performance would been affected.

What could be other possible reasons & how to identify.

 

try adding cooling, it could be the system is over heating, and throttling back its speed to cool itself , and dropping threads.
audio / video algorithums are time critical, they cant wait.. they prioratise audio, dropping video packets if no more time is available in a frame.

two reason.
the human eye is very tollerant of stuttering video , but the ear is not good with stuttering audio,
audio takes lot lass processing so is done when not eniught time fir the video,

 

you did not confirm if the problem is with monitor itself or with source of signal or what is the type of signal source. but whatever the signal source is, it is likely some advanced computing unit, such as raspberry pi, PC or similar. all of those generate video signal using more than just a processor - there will be bunch of ICs and they all need to stay cool. seeing one of them (CPU) getting blistering hot is a clear sign that unit is overheating. there are kits for each of the platforms. adding passive cooling is a bare minimum. if this is not enough, switch to active cooling (forced air circulation).