The most common problem with this set is the convergence chips fail.To repair this type problem you need test equipment and soldering/desoldering tools and supplies. Most repair shops can repair this problem for 150-295 us dollars. If you attempt to disassemble the tv by yourself you risk damage to a light sensor that will render the set inoperable.In other instances I have seen bad solder connections and transistor failure on the boards but all these are repairable problems. No circuit board replacement should be needed. Good luck Russmann.
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.
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