Sony KV-32HV600 standby LED blink 7 times

[buzzle]

I got a KV-32HV600/ chassis DA4 build in Oct 2002 TV set just went off to the standby LED with 7 blinking code with no video/audio.

I was able to reset it by unplugging the power cord for several hours a few time but now it refuses to cooperate.

Appreciate any suggestion/idea of the blinking code and what is wrong/failure with the TV and what do I need to find/replace the part.

And if anyone have a diagram or service manual for this
thx