The Sony Trinitron Standby LED Codes

[YamahaFreak]

I was wondering if anyone here could provide me with a link to the list of codes and what they mean, and, as a plus, what to check in the circuit? Our main TV set, a KV-32HS250(?) has just stopped working. I get alternating four flashes and seven flashes on the set. (That is, four flashes until I turn it off, then seven flashes when I turn it back on, then off again and it's back to four flashes, and so on.)