Changhong color TV H2535K line pushes the power supply filter to cause interference and fault repair phenomenon: see picture (image has interference).
Repair process: The interference of the test machine image changes with the brightness change, and the interference position is also different. When the acceleration pole voltage is lowered, the fault disappears, the acceleration pole voltage is adjusted, and the fault extends from the middle to the top and bottom as the acceleration pole voltage rises, and then divides. The two interference bands move up and down (in this case the middle is normal). Because this fault is caused by a slight ignition of high voltage, and the acceleration of the acceleration voltage can be lost, so put the idea on the components such as the high voltage package and the pipe socket. But after the replacement, the fault remains, then check ABL, replace the acceleration pole, B+, field power supply, line vibration power supply and other filters are invalid.
Careful observation of the fault image, it feels that the fault is caused by the line sync head is not normal, and put the idea on the line circuit again. When the contemporary line feed pushes the power supply filter capacitor, the fault disappears.
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