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Its HOT [Horizontal Output Transofrmer] section circuits has the trouble. There are two possibilities for this fault. The first one is shorted HOT itsef. It can be replaced; and can be bought from most of the electronic sparepart shops at your town. It will have a number printed on it, and should benoted. Must replace with same number. The second fault is with leakey Horizonal Output Transsistor. This is the transistor that drives the HOT said above. Just repalce this transistor first. After replacing it, just switch ON the set for a few seconds; say 5 seconds or so, and check the heat of the replaced transitor. If it overheats within this time period, HOT is defective and should be replaced. OK.
I've suspect that your Flyback Transformer is shorted this is based on my experienced on a lot of Sony tv, that's the common reason why H-out transistor keeps blowing. Before replacing the FBT you should re-solder around it, check the B+ for high voltage. Check the capacitor around.
Hope I helped you.
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The 2X blink indicates that either the Horizontal output transistor is shorted, or the RGB amp is shorted (on the CV board).
The Horizontal output is probably the cause, and as a general rule, the flyback should be replaced along with the H-Out transistor. Good news is that Sony is pretty good about having parts in stock. In fact, a lot of times they will have the A board with all the parts on it for only a few bucks more than just the flyback, so you basically get a new TV (electronics-wise).
Any decent repair shop should help get the parts/do the repair for you if you don't have the electronic experience.
Usually, in those Sony sets, a crack developes on a small transformer in the horizontal drive circuit, which causes the horizontal output transistor to short. This immediately shorts out the switching transistors in the power supply and blows the Sony 0.1 ohm resistor fuse. A shorted flyback (high voltage) transformer will also have the same result. The power supply does NOT need to be replaced. The parts should be replaced, the flyback checked and the board resoldered by a qualified tech familiar with Sony sets.