My SONY will not turn on. It clicks but no sound or picture. Sometimes I get 4 blinks when I try to turn it on and sometimes I get 7. Any suggestions? Anywhere where I can get a copy of a repair manual? I would appreciate any help. Thanks
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I have seen this flashing before, this could be an indication that the picture tube is weak, what happens is that if the white balance is off there is a circuit called akb it monitors the kathode of each gun and if they are not in balance it will attempt to balance it out. if it can't the picture will begin to flash, sometimes in some models the power light will blink 5 times. On some models the power light will only flash if the tv gives up trying to compinsate for white balance and shuts off compeletely. If you see the tv shutting off with 5 blinks then you know for sure it is time for a new set.
This means one of three things, either the lamp is bad on your tv, the ballast that powers the lamp is bad or the safety switch for the lamp door is not depressed or it has come un-plugged. It could also mean the power supply or fuse on the power board is blown. I am assuming this is a DLP tv, and if so, it is fairly easy to fix it or find parts for it online. If you are slightly mechanically inclined, want to save money and dont mind paying attention to detail then you can fix it yourself. If you need help dont hesitate to ask.
Many of the later model Sony TV’s have a built in self-diagnosis function. If the timer/standby indicator is blinking, this could be an indication of a problem with the unit. The diagnostic blinking will occur automatically with no action required by you to engage it. in yor case you have 5 blinks that´s why the last is short to be possible the count..Five 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.
Four blinks - No vertical Deflection (V STOP), Screen goes to a single horizontal line then the video signal muted. Check IC1509, Q1505
Five 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.
and some times the eprom ic is fulty ...
try to unplug your tv from the main power for 5 hours then press the power button and keep pressing for 7 seconds then release ,if this do not work ,you should take your tv to a qualified person
Four blinks would normally indicate a yoke winding that was shorting intermittently, 5 blinks something on the "D" board in overvoltage condition and 6 blinks commonly Ic6501 is failing...
To have all of these blink codes happening could be signal derived, thereby not affecting dvd play. Could be smps related or possibly regulation. My first guess would be the "D" board...
Is there a cheap and quick fix, yes and no... This isn't one you'll be able test out or you wouldn't be asking the question. But a shop should be able to determine the problem and repair for less than half the cost of a new Tv in it's comparable class..
Hope this helps!