Need help in sharp tv - capacitor in power circuit

[kwavax]

Need help in sharp tv

I have sharp TV model:20h-SC

the problem is when power on TV it display black screen and you can hear a sound
of channel

i try to change the a capacitor in power circuit 270uf 400 v
the TV repaired but after 5 days the problem returned

 

[kabiru]

Hi, i dont think that capacitor is cause of that problem what you should do now is try to reduce the screen intensity frm the line transformer, and also cheak for any open circute around the line transformer,also cheak the tuner and if block. find out if 160volt capacitor is ok which filter the supply to the line transformer