Official website: http: //www.zhihengmed.com specialized ultrasound, maintenance, upgrades, maintenance-stop service provider - Guangzhou Shiko 24-hour service hotline: 400-813-989 / 138-244-50510 Machine Model: GE Voluson E8 1 . Symptom 1) GE Voluson E8 can start the machine, in the selection of the phased array probe (3SP-D), the image area is not the beginning of the wave, only the noise, ultrasound scan can not diagnose. 2.2) and then switch to a linear array probe (ML6-15-D), there is the beginning of the wave in the image area, but under normal circumstances, only about one-third, the far-field section does not echo. Increasing the gain, noise will be increased, can not be clinically diagnosed. The image on the monitor is shown in Figure 2. 2. Analysis of maintenance a) analysis to determine the presence of a fault ultrasonic transmitter part, suspect the system according to the symptoms. Generating and transmitting ultrasonic components affected include: probe, channel plate, firing board, the front control panel and high-voltage power supply, so the need to gradually checking further narrow the scope of failure. 2) First, check the probes. Unplug the probe, insert another outlet, and then look to switch the probe is normal. After examination, the probe is switched to normal, symptom persists. This shows that the probe, the channel plate this part of normal operation. 3) Next, check the transmitted pulse trigger signal, the result is normal. Upon detection of high voltage power supply, and found no +/- 80V power output. This suggests that the presence of high voltage power supply failure. 4) high-voltage power failure will result in emission of ultrasonic pulse output board can not produce, it can not have a start-wave image. 3. Troubleshooting 1) high-voltage power supply module from the chassis to remove, open the metal casing, use a multimeter testing found that there are two fuse has blown, indicating high voltage power supply internal short circuit fault. After measurement, found two transistors shorted breakdown. Replacement of the same specifications as the transistor and the fuse, short circuit troubleshooting. After the high-voltage power supply module into the machine, turn on the computer, the system returns to normal. GE Voluson e8 ultrasound probe match: Abdominal: 4C-D, C1-5-D, M6C-D, superficial: ML6-15-D; cavity: IC5-9-D; heart: 3SP-D, S1-5 , M4S-D, M5S-D, 6S-D; dimensional probe: RAB2-5-D, RAB4-8-D, RIC5-9-D 

keywords: GE, VolusonE8, GE four-dimensional ultrasound E8, four-dimensional ultrasound effect repairs,