Since a while now our 7 year old Sony does this: After switching it on it takes some time to come on. Then as the sound stays perfect without any distortion the picture goes off (black) again, this to come back on after a few seconds and again and again and again.
The Picture will be stable after approx 10 minutes, but could bo black again when there is an explosion in the movie.
The sound is there the whole time and it doesn make a difference if the cable box is selected or the DVD, or no source at all.
If there's a part that can be changed for a few dollars, I sure wil try that. If it's the tube I'll set the thing nicely to my driveway next garbage-day.
Thanks for taking the time,
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Re: Picture goes off an on "blinking" when turened on
Most likly is a cold solder connection in the horizontal oscilator circuit, a problem with the vertical sweep circuit, or could be in the video jungle circuit. Unless you know how to troubleshoot solid state electronics, A TV set is not the place to be experimenting in unless you wanna get seriously killed!! Call out a pro to assist you if you feel you like the set and dont mind investing a few hundred bucks. Good Luck
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These blinks [flashes] are fault indication (Error Codes).From the number of blinks occur at one time switch ON, you can get an idea about the faulty circuit section inside it.This will make repair easy.These are called blinking codes. Make sure about the exact number of blinking of the standby/power LED, by switching On & OFF the set, for at least two times.Count it carefully.If you wish to get some details, check the site linked here.It has details about blinking codes, and fault locating procedure, to many popular brand TVs and other devices.http://electronicshelponline.blogspot.com/
Five blinks is the error code for an AKB (auto kine bias) error. What this means is that the set isn't able to balance the three color guns (red, green and blue) of the picture tube properly, and it's blanking out the screen.
To get the proper colors, the signals for the three colors need to be balanced, and Sony sets have circuitry to do this automatically. Other brands don't, and when they go out of balance you see a picture that starts to show tinting or colors that are off. As the picture tube ages, it gets harder to adjust the balance until finally the AKB circuit can't anymore, and poof, the picture goes away. With a 17-year-old tube, it's not surprising.
There isn't anything that can be done to fix the picture tube, it would need to be replaced. But the cost of the tube and the work required to get it set up after installation makes it completely uneconomical to repair this TV. A new picture tube is nearly $200. Then special tools are required to
set the tube up (a process called convergence), so you'd need to find
someone to put it in, and possibly pay to have the old one disposed of. A new 32-inch LCD set is around $350 now. Treat yourself to a new one.
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.
comon sony problem Sony has and Ik circuit tha is suppose to not allow video in there is an uneven emission from the crts what you have on both sets the tube are getting so weak causing the circuit to kick in and out in other word you need crts inboth set and they are not avail new you can have them rebuild but the set will never look good again time to retire them
Six blink shutdown is a common problem with this televion one of two switch mode ps ic have failed. The repair may cost somwhere around 150.00 to 200.00 to fix from a technician. If you want the specifics, i can provide them.
5 times blinks is error code for No Good White Balance and you said that picture is very green. As you know TV is approx 7 years old so it needs RGB gain adjustments. If you are TV tech person or know about TV repair, let me know to guide you further. Or contact local TV repair shop to fix it.
The 7 blinks indicate a high voltage shutdown (high voltage exceeded 33,000V). This is usually caused by a defective regulator. Could you please post the exact model number (KVxxx) and I'll look up the part you will likely need?