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4 flashes mean the IC5004 (STV9379)on D-Board went bad and the 15V supply is no longer steady. The IC
is rather easy to find and inexpensive (around $2.50). Your main
problem will be desoldering the old one and soldering the new one. CAUTION! - Heat sink on IC5004 is -15V. Care must be taken not to allow heat sink to touch any other components
For the last week my TV has been going to a black screen for 10 seconds or so then the picture returns. It has been continual. Last night it stopped going to black screen, but now the standby light flashes 5 consecutive times and the color went haywire. A lot of red and everything that is suppose to be black is green.
I did a soft and hard reset with no success. What's wrong and is it worth fixing? Bought new in November 2002.
The 7 blinks indicate a high voltage shutdown (high voltage exceeded 33,000V). This is usually caused by a defective regulator. Could you please post the exact model number (KVxxx) and I'll look up the part you will likely need?