Question about Sony KDS55A2000 55" HDTV

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Sony KDS-55A2020 picture goes blank then returns

My TV is almost two years old. The picture will go blank, still have sound, no flashing lights on front panel, picture returns. Intermittent problem. But at time will do this continually, picture on for about 50 seconds aff for 36 seconds for several hours. I cleaned the back (it was quite dusty) worked ok for a day and started to cycle again.

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This sounds like the ballast for the lamp is going. The ballast sparks the lamp, and if it starts to go, there's not enough current to keep the lamp sparked. Thus it starts to fail: it's the same principle as a fluorescent lamp fixture. Ballasts are available at any service depot, but they're fairly expensive, and perhaps prohibitively so; you may want to look at replacing the monitor itself.

Posted on Jan 07, 2009

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