I had the same problem with my set. the problem was with the lamp bulb. They don't teel you this, but when a bulb start to go, this can happen. Iuld turn my set on and it would work. After about 45 seconds, the picture would "turn off" (still have the sound). This would last for about 45 - 60 seconds and then the picture woudl come back, but then the cycle would stsart all over again. I took a chance and purchased a new bulb (I bought just the bulb, not the bulb and housing). I took out the current bulb and housing, replaced the bulb in the current housing, and put the bulb/house back in. Problem solved! (have not had the issue since). Hope this is helpful!
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I believe that model has a logic board in it and that is what it sounds like to me. That is just off top of my head, but I believe if you will notice the standby light it will be blinking so many blinks and stop and then blink again. If so this is a code that you can look up on the Samsung web site and plug in your model and it should tell you what just say ~ 4 blinks means. I worked on so many and it has been a while but I believe the last one I had was a Samsung and I put a logic board in it. If I can be of any further assistance please let me know.
Hi, It is symptom of weak lamp that has been reached to an end of its working hours life but not dead/ broke yet. If lamp has not been replaced in last 2-3 years then please replace lamp in tv to get solve this problem. Lamp replacement procedure is easy and written in user manual, please buy Sony original lamp for good picture in tv. Thanks.
helloFive blinks - AKB circuit (automatic kine bias), the
timer/standby indicator blinks for about 30 seconds then goes to the
self-diagnosis function. Something is wrong with the video. Check video
out, Q705, 732, 761 and other components on the C board, also check
Q218, 219, 220 on the A board. In addition, unit could be in IK
blanking, try turning up screen slightly.