Spring Orchid Air Conditioner Repair Tip: Air conditioner not cooling (C7 filter capacitor leakage)
Analysis and Detection: After testing, it was found that the C7 filter capacitor on the circuit board was leaking.
Repair Method: Replace the C7 filter capacitor to eliminate the fault.
Warm Reminder: 220V AC power is converted by the transformer TRANS1 into 13V AC power, then rectified by IC7 bridge rectifier and filtered by C6 and C10, outputting about +12V DC power. After passing through the three-terminal regulator IC5 (7812), and being filtered by C11 and C7, a 12V DC voltage is output. The C7 filter capacitor is used to enhance the controller's ability to resist interference.
Source of Information: Beijing Chunlan Air Conditioning Repair Center http://blog.tianya.cn/blogger/blog_main.asp?BlogID=3480078.