I have a Sony Trinitron television that i purchased in October of 1996. The model number is kv - 20s10. The serial number is ab20416. My TV screen blacks out every minute or so. This first started happening around three weeks ago. I bought this TV at a Sony store around October 1996. I had to replace the picture tube in 2001 and i had to get it fixed again in 2005. How can I fix this problem ?

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