Monday, February 22

CRT


question for u.

1.Is the s2000af equivalent to st8812fx?

You can try to replace the St8812fx with S2000af but with one condition. After power On make sure the HOT do not get hot after a while otherwise it may blow the HOT. Before replace make sure all the corresponding components are good.

2. A Sinotec TV is switching on, screen becomes bright with horizontal lines. if i adjust the screen switch on the EHT, it switches on and off. Changed some resistors and caps around the EHT but no change. What could be the cause?

Adjusting the EHT voltage too high will cause the screen to switch on and off. Try lower it down the voltage and check the Vertical output IC and surrounding circuit. Look for the blanking signal in the IC and trace from there
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