Screen flickering? Consider these aspects

Release time:

2025-03-12 09:38

1. Malfunction Phenomenon

The screen of the Philips IU22 ultrasound machine is displaying artifacts and vertical black lines, and the malfunction persists even after multiple restarts.

2. Malfunction Analysis

The artifact location covers the scanning sector of the Philips ultrasound, so image processing malfunction is ruled out. The speculated reasons include the following aspects:

First, monitor malfunction.

Second, PC graphics card malfunction.

Third, malfunction of the video converter board.

3. Malfunction Elimination

First, verify if the monitor is malfunctioning. The same malfunction was observed using a different monitor; therefore, monitor issues can be ruled out.

Second, verify if there is a problem with the video converter board. If the screen artifacts persist when using a VGA connection to the workstation, the converter board malfunction can be ruled out.

Third, determine if there is a problem with the PC graphics card. After replacing the graphics card with one from a working machine of the same model, the malfunction disappeared, confirming a graphics card problem.

The color Doppler ultrasound PC host is a dedicated custom component, and the graphics card differs from those in commonly used computers, making it difficult to find similar products in the market. After observing the surface of the graphics card, swollen capacitors were discovered. The malfunction was eliminated after replacing the capacitors.

4. Summary

The structure of the color Doppler ultrasound PC is similar to that of a computer; however, some components are custom-made, making them difficult to purchase. If the instrument malfunctions, the only option is to purchase or even replace the PC from Philips, which is quite costly. Most hardware failures are due to aging electronic components, requiring careful investigation by maintenance personnel.

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