A Skyworth HD color TV, three no, the machine slammed. The voltage of each channel is measured as usual, almost zero. When the line load is disconnected, the voltage returns to normal, thereby judging that the short-circuit point is in the line output circuit. Routinely testing the wearing parts of the consumables, no damage, seeing that there is just the high-pressure package of this kind of machine at hand, the substitution is fruitless. Careful detection found that the damper diode breakdown, decisive replacement, or no results, puzzling! Inadvertently booting, found that the snoring disappeared, the voltage returned to normal, and then take a closer look, ok! The deflection line socket has been detached, the fault is re-embedded, and the re-reproduction is not repeated. Therefore, the deflection branch is carefully checked to find that the S-correction capacitor is short-circuited. The two capacitors are carefully measured to find that a 334/400V capacitor has been marked. The crack is open, and the other capacitor with a breakdown of 27N/400V has the same appearance as normal. So it took the boss to find these two capacitors on the waste circuit board, and quickly replaced it, haha, finally returned to normal, the blue screen of the long-lost, pleasing, and quickly inserted into the test machine DVD, the sound is good.
It is hard to see two open-circuit capacitors in parallel with one same capacitor. I have a long experience, what about you? Have you ever encountered this situation?
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