This is very common problem for sony. Blinking light is power supply problem need to replace two voltage reulators in supply and caps and sometime horz output.

Sometimes if you adjust screen voltage adustment on flyback just slightly it will fix it.

cost if ps is 225.00
screen is 95.00

Thanks doctor video

Anonymous

93 Answers
Posted on Sep 01, 2009

SOURCE: Sony KV-34HS420 shuts of and stand-by light blinks

blinking 7 times after shutdown and after 3 sec repeats the same number of blinks.possible cause is over voltage at horizontal deflection circuit,or over voltage at power supply, or high voltage leak at FBT,or FBT itself is defective.open resistor related to ABL circuit.

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