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Cant work with manual SO.....
If its a SMPS there is usually a short. Often the Hoz out or a 150 V zener diode from main B+ to ground. To keep from grenading when the SMPS sees over current it drops in freq & screams or ticks. If the zener is shorted often the SMPS is running wild & putting out too much V. 73 Zeno ![]() LFOD ! |
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