Rencheng Repair Case: Myray High-Frequency Probe 7L4A Image Shows Dark Channels

Release time:

2025-03-12 09:37

Machine Type:Mindray High-Frequency Probe

Machine Model: 7L4A

1. Malfunction Phenomenon

Image has dark channels

2. Fault Detection

(1) Observe the exterior for any damage. Complete and undamaged.

(2) On-machine detection. Detection shows that the transducer elements are generally weak, capacitance value 280~300pf, transducer is faulty.

3. Fault Determination and Analysis

Long-term use has caused transducer wear, weak elements, replacement is recommended.

4. Fault Handling

Overhaul. Replace the transducer. After reinstallation and testing, the image is normal.

5. Post-Repair Effect

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6. Probe Maintenance and Care

(1) Handle with care

Ultrasonic probes must be handled with care during use to avoid impacts that damage the internal chips. When finished using the probe, do not fold or tangle the probe connecting wires.

(2) Probe Plugging and Unplugging

In daily use, when changing ultrasonic probes, always turn off the main power. If the host is not powered off and not frozen, directly plugging and unplugging the probe may cause damage to the internal circuit board and crystals due to a momentary surge of current. It will also accelerate the oxidation of the probe plug pins, directly affecting the normal use of the probe.

(3) Probe Cleaning and Disinfection

Avoid contact between the probe socket and disinfectant. If the probe socket is contaminated with cleaning agents and disinfectants, it will directly corrode and accelerate the oxidation of the probe socket pins. In short, the maintenance and care of ultrasonic probes are important in the actual medical equipment maintenance process, because the effective accuracy of the ultrasonic probe directly affects the efficiency of ultrasonic examination. Regular maintenance should be carried out to reduce damage caused by human factors and extend the service life of the ultrasonic probe.

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