Hangchan HENTR Brand Constant Voltage Power Amplifier No Output Special Fault Repairing Circuit

Published:2011/8/6 8:53:00 Author:Robert | Keyword: Hangchan, HENTR, Constant, Voltage, Power Amplifier, Output, Special, Fault, Repairing | From:SeekIC

When checking at starting, it finds one of the two 10000uF/100V power filter capacitors is rupturing. So it could only remove the ruptured capacitor and carefully wipe the electrolyte on the circuit board. Then checking the power tube and it is not found the sign of short circuit. At last it replaces a new 10000uF/100V filter capacitor and internal-device 15A fuse. Then trying the device it is all normal. After some days it is found that when starting the relay sometimes could be connected but sometimes it couldn't and also has the alarm sound. It also finds the following law. If firstly starting after shutting off for a long time, the relay could always be connected. And if starting after shutting off for not a long time, the relay could be sometimes connected and sometimes not connected.



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