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After i turn on my tv after about 3 minutes it starts blinking on oan off whats the problem?

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Fault in the main power supply regulator board. Check and replace damaged component/s at its main power regulator [SMPS] section circuit. Contact any service technician. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts.
http://electronicshelponline.blogspot.com/
It will be best to replace the power supply regulator board as card basis rather than making "Surgery" to it; which usually will make loss for both money and time. Even though you can make it right, it will cost around an amount equal to the cost of a new board; including the cost of (spare parts + service charge) More to say, most of the spare parts to it will be difficult to get from open electronic spare part market. This is true to most of the flat panel TV power supply boards; irrespective of its brand and screen size.

Posted on Apr 12, 2015

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Posted on Jan 02, 2017

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1 Answer

My Sony KDS-60A2000 is 41/2 years old. About 2 weeks ago I could not get the tv to power up. the green stand by light just kept blinking. I powered off, then powered up again and the tv started and and...


Hi,
TV needs lamp replacement as existing lamp got weak or has been reached to end of its working life, please note that lamp is not dead or broken so that is why lamp lit is not lit at tv front.
Hope these info will help you.
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When i go to turn on the tv the red power light turns on and then starts flashing, with an all blank tv screen. I cant get anything but a black screen. The light will flash for a lil while, then the tv...


BLINKING RED LIGHT IS ERROR CODE.

1. Unplug set for a few minutes.

2. Plug back in and turn on.

3. When red power light starts blinking--COUNT THE BLINKS.

4. THREE BLINKS, pause, THREE BLINKS (ETC) IS SHORT PROTECTION AND A DO IT YOURSELF repair for some people. I have complete instructions for this repair.

5. 5 blinks, pause and 5 blinks etc is short on 140 volt line and while not as easy as 3 blink error code it points to places to look at.


If this told you something you did not know, rate this solution as very helpful as I do this here for free.

Post a comment here when you know what error code is and I will help.

REGARDS, SD TECH

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Time to get a new TV. I have similar problem. In my case, the set turns off, LED blinking green for about a minute or 2, then the set will turn on by itself. Something the LED started to blink yellow after blinking green and then shuts off. I can turn it back on. This happens 3 or 4 times in an hour. After that, the TV stays on for as many hours as I want until I shut it off.
And then the problem repeats everytime I turn it on from a cold start.
I have my eyes on the 50 inch Plasma from Panasonic. Bestbuy has one for 999.99.

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Tv won't turn on. It blinks green then red.


Hi,
Question shows tv is Sony KDF-60WF655.
Green light blinks when tv gets prepare to fire up lamp, check internal circuits then show picture on front screen.
Red light blinking shows some kind of internal problem during circuit check and protection got activated upon some failure.
Count the red light blink as you will see 3 second long pause and post it here to diagnose what section of tv got problem.
Did you replaced its lamp in last 2-3 years?
Thanks.

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TV works fine for about 3 minutes then the picture goes black and the red light on the front of the TV starts blinking. The sound works the entire time. If I shutdown the TV and wait a few minutes and...


The light is blinking a code. The code will be a series of blinks, a pause and the blinks again. Phone Sony service and give them this code. They will be able to advise you as to the problem.

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Sony TV;s will give a service code, count the blinks, eg; 2-6, light will blink X amount of times, hesitate & blink again so many times. Count and report back but, I would recomend to unplug the TV's power cord, to reset the TV's system. Unplug for at least 3 minutes. I hope this was helpful.

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Blinking picture until warmup


On Sony TV's they monitor the current drain on all three electron guns Red Green and Blue. Until all are somewhat equal it will keep the CRT blank. As the set ages it means that it might flash a few times until the cathodes are good and warmed up.

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