In case of failure of small injection molding machine, the following steps can be taken for troubleshooting:

1. Understand the fault condition: first, you need to understand the performance and occurrence conditions of the fault, such as machine failure to start, unstable injection, mold damage, etc. Understanding the fault can help narrow the scope of troubleshooting and quickly locate the problem.

2. Check the electrical part: check whether the electrical components are normal, such as power plug, fuse, electrical box, etc. If the electrical components are damaged or abnormal, they need to be replaced or repaired.

3. Check the hydraulic part: check whether all components of the hydraulic system are normal, such as oil pump, oil cylinder, solenoid valve, etc. If the hydraulic components are damaged or abnormal, they need to be replaced or repaired.

4. Check the mechanical part: check whether the mechanical part is normal, such as screw, barrel, mold, etc. If the mechanical parts are damaged or abnormal, they need to be replaced or repaired.

5. Check the temperature and pressure: check whether the temperature and pressure of the small injection molding machine are normal. If abnormal temperature and pressure are found, adjustment and repair are required.

6. Check the fault code: if the small injection molding machine has the fault code display function, it can be checked and solved according to the fault code. If there is no fault code display function, you can consult the user manual or contact the manufacturer or professional maintenance personnel for troubleshooting.

7. Replace damaged parts: If the failure of a small injection molding machine is due to the damage or abnormality of a part, the part needs to be replaced or repaired. If the component cannot be found or still fails after replacement, contact the manufacturer or professional maintenance personnel for further troubleshooting and solution.

8. Avoid overload operation: in the production process, avoid overload operation of small injection molding machines to avoid unnecessary wear and damage to the machine. If the machine is found to be overloaded, it needs to be adjusted and repaired in time.

9. Regular maintenance: regular maintenance of small injection molding machines can extend the service life of machines and improve production efficiency. If the machine is not maintained for a long time, hidden trouble may accumulate, which may lead to machine failure. Therefore, it is necessary to maintain the machine regularly to find and solve the hidden trouble in time.

In conclusion, to solve the problems of small injection molding machines, it is necessary to understand the fault conditions, check the electrical, hydraulic, mechanical parts, temperature and pressure, check the fault code, replace damaged parts, avoid overload operation, and perform regular maintenance and repair. If the fault cannot be solved, it is recommended to contact the manufacturer or professional maintenance personnel for further troubleshooting and solution.