sony tv trinitron video problem

[catals]

pls.help me my sony tube tv trinitron is not function if you turn on the tv then its oscilate the video appear then after 3 mins. the black portion appear horizontaly from right its become large going to left side until the video gone because it covered by the block portion.. only the the audio remain..functional.....pls help us i am stress of this trouble thank you.. hoping 4 your reply..

 

[Jagtech]

Its been a long time since I worked on a Trinitron, but I have seen this symptom. As memory serves, it is caused by a bad electrolytic in the high woltage section. Do you have a schematic of the set?

 

[catals]

thank you for your reply. but i dont have schematic diagram of my sony tv.. but i will try to find the bad electrolytic capacitor you suggested me. but i will ask you something where we posibly find this bad electronitic it could be near at the flyback transformer/? thank you.........

 

[Jagtech]

Yes, in the flyback section. Its for flyback-derived low voltage source.

 

[catals]

ok i will try to find the bad capacitor thanks for the reply;''i wiil just send u message about the result;