Measurement of high-voltage transformer with AC voltage output, and then measuring microwave tubes FA no DC high end. Plug the component pin on all high-voltage capacitors after unplugging the components measured separately and found positive and negative resistance values ​​are high voltage diodes 150kΩ (normal block measuring with a multimeter R × 10k forward should be about 150kΩ; reverse should be infinity). V2 was originally breakdown voltage diode leakage can cause heat to troubleshoot their replacement.QCGservice manual download site