I bought a KDF-E42A10 for $50 a few months ago; it randomly turns off and on by itself so i replaced the bulb and while the picture became much clearer, the off/on issue continues. The green light flashes for about 30-40 seconds then the set turns on again. The frequency seems to be higher during the first 45min of use and then it seems to happen less and less the longer the tv is on. The red lamp light does not flash at all. No diagnostic codes are present. Also, if the...