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Four blinks - No vertical Deflection (V STOP), Screen goes to a single horizontal line then the video signal muted. Check IC1509, Q1505.
If you wish to get more details, check the site linked here.
Check very carefully for cold solders on horiz. drive transformer also replace the electrolytic cap that shapes the horiz. drive signal - if you have a scope and manual compare the drive signal shape.
Some times using poor after market horiz o/p's also causes the problem - does the o/p heatsink get to hot to touch or does the horiz o/p blow immeadiatly?
the power is blinking because there is a deffective parts... the supply that makes oscillation of tv has been cut off... either the horizontal transistor is open or the resistor from the abl change its value...if you have knowledge with the parts maybe you can try... only the qualified servicemen can repair the problems...
Have you ohad electrical prooblems or lightning in your area?
Im sorry to inform you that a red light blinking is an indication that the main power supply is good BUT the sweep supply has a problem .. Most likly the high voltage transformer as well as the horizontal transistor is bad. if you have no solid state repair experience, you will not be able to fix this set on your own. You have to troubleshoot the board and test the circuitry.
I could be simple as a fuse but unlikely. Is there a Sony repair shop in your area?
+13 & -13 requires for Vertical Deflection IC and produced by Flyback Transformer, these volts will be produced IF Horizontal deflection circuit works properly. so try to check H-Out Transistor and its necessary volts / signal. Pls also mention correct Model Number to provide you more help.
It is possible that the flyback transformer and the horizontal output transistor have failed. Also there may be damage in the power supply when these components fail.
When troubleshooting, it is important that the tech locate the cause of the fault and also change the related components.
After the parts are changed, the power supply and the high voltage setups must be done to make sure that the voltages are in specs.
This type of work must be done by an experienced TV tech. He will have the necessary test equipment, tools, service manuals, and training. There are some very serious safety issues when working in a TV set.
the tv blinks 6 times,
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