For used second anode high-pressure relief put type elimination highlights circuit, to makes second anode Shang of high-pressure quickly relief put off, must meet two a conditions: a is TDA5112 {7}, and {9}, and {13} feet potential in shut machine moments quickly close to potential, makes CRT cathode electron beam flow sharply increases launches; II is shut machine moments curtain gate voltage still maintained must time, to on cathode launches of electronic flow for first times accelerated, Electric fields generated by second anode may have a certain rate of flow of electrons is accelerated for the second time, causes the anode high voltage capacitor stored energy to release.
Screen grid voltage on the capacitor, at the instant shutdown through the Flyback SCREEN potentiometer in the transformers series and the other discharge pressure resistance, due to the time constant is very large, enough to last for some time. In the brightness of the screen under normal conditions, screen power supply filter capacitors not leakage failure.


Focus inspection C505, R536, Q502 Q501 identified electrolyte capacitor C505 bottom seal overflow yellow, testing almost no ability to charge and discharge, after you change your capacitor, and troubleshooting.