Solutions for Electrolytic Capacitors in Home Appliance Repair and Industrial Applications
I. Practical Examples of Electrolytic Capacitors in Home Appliance Repair
1. Air Conditioner Repair: Failure of a CBB65 Series 100μF Electrolytic Capacitor Causes Compressor Startup
Solution: Replace with a 105°C Long-Life Electrolytic Capacitor and Install Anti-Vibration Tape
Repair Key Points: Inspect the 16V 1000μF and 35V 2200μF Supporting Capacitors
2. LCD TV Repair: Bulging of a 6.3V 10000μF Electrolytic Capacitor Causes Screen Flickering
Diagnostic Procedure: First check the 50V 1000μF main filter capacitor, then the 30V electrolytic capacitor bank
Alternative Solution: Use Teapo or Hitachi capacitors of the same grade
II. Typical Industrial Equipment Troubleshooting
1. Inverter Repair Case:
Failure Symptom: Failure of a 6800μF 350V electrolytic capacitor causes equipment overheating
Troubleshooting Steps:
1) Inspect the supporting 150V electrolytic capacitor bank
2) Replace with 18000μF 400V industrial-grade capacitors.
3) Install a heat sink.
2. Welding Machine Repair Solution:
Common Fault: Aging of 12000μF 400V electrolytic capacitors causes unstable output.
Upgrade Solution: Replace with 22000μF 450V screw-type electrolytic capacitors.
Note: Also check the condition of the 600V aluminum electrolytic capacitors.
III. Solutions for Special Application Scenarios
1. Solar Inverter:
Key Component: 47000μF 16V Energy Storage Capacitor Bank
Maintenance Recommendation: Inspect the 10000μF 250V Main Capacitor every two years.
Upgrade Option: Extend Lifespan with Polymer Solid-State Electrolytic Capacitors.
2. Servo Drive:
Core Capacitor: 80V 5600μF Energy Buffer Capacitor
Maintenance Interval: Inspect the 3-terminal electrolytic capacitor every 5000 hours.
Spare Part Selection: SZSSJW Brand Industrial-Grade Capacitors.
IV. Purchasing and Replacement Guide
1. E-commerce Purchasing Tips:
Key Points for Screening Lorida Electrolytic Capacitors on Alibaba International
How to Select High-Quality Lorida Electrolytic Capacitors
Procurement Channels for Special Specifications (e.g., 1mF, 600V)
2. Alternative Solution Database:
Five Alternative Models for CD135 Capacitors
Cross-Brand Alternatives for 33μF, 450V Capacitors
Precautions for Replacing Traditional Electrolytic Capacitors with Solid Tantalum Capacitors
V. Preventive Maintenance Strategies
1. Recommended Testing Tools:
Specialized Electrolytic Capacitor Tester
Tips for Using an ESR Meter
Infrared Thermal Imager for Testing Hot Capacitors
2. Maintenance Cycle Schedule:
Low-Voltage Capacitors (16V, 1500μF): 2-Year Inspection
High-Voltage Capacitors (400V, 15000μF): 1-Year Inspection
High-Temperature Capacitors (105°C): 3-Year Replacement
VI. Troubleshooting Tips
1. Repeated Capacitor Burnout:
Check Small Capacitors (4μF, 50V)
Verify the Feedback Circuit Capacitor of a 47μF, 50V Capacitor
Check the Insulation of a 1000V Electrolytic Capacitor
2. Unexplained interference:
Focus on testing the 3-terminal electrolytic capacitor.
Replace medium-voltage capacitors such as 63V, 1000μF.
Upgrade to low-ESR capacitors.
