The following are some of the reasons why the ultrasonic cleaning machine's DC fuse DCFU blew:
Burn marks can be seen on either the rectifier bridge stack or the power tube;
After the power switch on the ultrasonic cleaning machine has been turned on, the machine will have ultrasonic output; however, the cleaning effect will not be as good as it could be. The explanation and the answer are as follows:
Incorrect concentration of cleaning solution in the storage tank;
There is a problem with the frequency coordination of the ultrasonic waves;
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is possible that the temperature of the ultrasonic cleaner will gradually rise as a result of prolonged use of the power-on state
This may result in the colloid melting, the transducer falling off, or the ceramic part of the transducer breaking
Measure the dielectric strength of the transducer by using a shaker for the detection and solution to the problem. If the dielectric strength is less than 200M, then the transducer can no longer be used and needs to be replaced with a new one.
Because of its internal ceramic, the transducer is susceptible to cracking after prolonged use, which renders it incapable of performing its intended function.
The following are some of the reasons why ultrasonic cleaners can result in insurance claims:
In the event that the device has been damaged in any way, you should first obtain insurance, then use the on-off gear of the multimeter to determine whether or not it is disconnected, and finally, you should purchase a new device.
If the ultrasonic cleaning machine is used continuously for a long time or if there is not enough cleaning liquid for a long time, the power tube on the motherboard will short-circuit. This can also happen if there is not enough cleaning liquid for a long time.
Identification and treatment:
Use a multimeter to determine the resistance of the pins on both sides of the power tube once the power tube has been connected to the main board. This resistance, which should be somewhere around 22 under normal circumstances, can be determined once the power tube has been connected. After the power tube has been removed, meaning that it has been disconnected from the motherboard, it should no longer be possible to measure the individual pins on it.
The following factors contributed to the malfunction of the voltage stabilizer tube:
Turning on the power tube after the resistance value of the power tube has decreased or after it has been short-circuited is the most common way to damage the Zener tube; however, the Zener tube itself is only rarely damaged.
Finding the problem and fixing it require knowledge of the properties of the diode, namely forward conduction and reverse cut-off. When measured with the diode gear of the multimeter, the resistance in the forward direction is approximately 70 ohms, and the resistance in the reverse direction is ohms. Change out the new Zener tube entirely if the value deviation is excessively high or if the forward resistance is similarly high.
The accident is brought on by the damage to the bridge, which is caused by the diode rectifier circuit:
Identical to the voltage regulator tube
The ability to detect and resolve:
also in accordance with the characteristics of the diodes that make up the bridge (the bridge itself is made up of diodes).
Damage to inductance and isolation transformers can be caused by the following:
Damage to the inductors and transformers was the cause of the problem, which was also the solution. In the majority of instances, burnt traces are able to be intuitively seen, and new components are able to be substituted.
The accident is caused by the malfunction of the control board, which is an adjustable ultrasonic cleaner:
Since ultrasonic cleaning machines are designed to operate nonstop for extended periods of time, the components that make them up eventually wear out, and this can sometimes lead to infiltration by cleaning fluids.
When the ultrasonic cleaning machine is not functioning properly, the problem can be diagnosed and fixed by disconnecting the connection that links the control board and the main board. Turn on the control board to see if the ultrasonic cleaner still functions; if it does, this indicates that the control board has been compromised and needs to be replaced.
