# month old RCA 50" rear projection tv turns on and off every 30 sec as soon as i turn it on. did this once after the first week i had it but the next morning it was fine and never did it again till now and wont stop after 3 days. Have tried unplugging it... Nothing works. RCA says the lamp is blown. I find that impossible as when the tv is on the picture is fine and since it did this before once and it went away. Please help. I found this question asked by tons of people but no answers have been posted. Could this be from a bad HD cable or similar? Thanks in advance! -Jamie
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