I have same set with same problem, no power. I just opened up the rear of the unit, where all of the circuitry is, and let loose a can of compressed air and cleaned off all of the caked on dust and dirt that had accumulated from the previous owner. And i mean let loose, make sure every surface you can see is spotless, and avoid blowing the dust up and ito the lenses, then I kept hitting the power button a few times, and it turned on and is working fine now.
I turned it on and off about ten times now and haven't had a problem.
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There is some problme in G Board (power supply board) in your Sony KP-46WT520 tv that is why standby light blinks 9 times.
If you are handy with electronics stuff repair and can test/ replace parts in circuit board then let me know to provide you more technical info to fix tv problem.
Your convergence power supply is propably not working. The convergence supply board is mounted above the mainboard and has AC 110V supplied to it from the main PCB. That's probably why the fuse blew.Rca Has abulletin regarding replacing two diodes CR19710 and CR19713 on convergence power board.
First of all, we need to determine whether the power supply has a problem or if it is being told to shutdown because of a problem detected in the set. Are you familiar with electronics repair? Do you have a meter?
Most likely there was a power event (surge, brownout, ect) that caused the power supply to fail in the TV causing the fuse to blow. you will need to have someone come and look at the unit and give you an estimate. If you keep putting fuses in and blowing them you could actually be causing more damage.
No shure to what to say,
- I would suspect bad CRT, does it have drive line when it does this, if yes on one tube only then tap it to see if the problem goes in or out
- could be cold solder joint this will also show if you tap the board
- would check the board on the nech of the picture tub to see if there is bad solder.
- I also seen bad screen control, this is the black block in the front of the unit that looks like 3" x 3" about 1" deep and has 6 contron to turn on it and has lot's of wires attached to it at the back.
- Could be high voltage block, very commond proble but don't think it would give colour problem.