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My Sony Trinitron won't turn on...has 4 blinks in Standby.

My Sony Trinitron was working one minute....I put my TVR on pause and now my TV screen won't turn on...has 4 blinks in Standby. I've tried the hard reset..leaving it turned off for 5 hours..nothing. I understand according to previous articles about this that I'm supposed to "Check IC1509, Q1505" but what does that mean? How do I do that? Thanks for any help you can give. My Sony Trinitron wasnot working . TV screen won't turn on...has 4 blinks in Standby. I've tried the hard reset..leaving it turned off for 5 hours..nothing. I understand according to previous articles about this that I'm supposed to "Check IC1509, Q1505" but what does that mean? How do I do that? Thanks for any help you can give.
Comment by , posted on Sep 09, 2008 Thanks, Dan. I actually realize now that may model is different. Will that matter? My TV is a Sony Trinitron KV BM14M40. My TV is the Sony FD Trinitron WEGA KV-24FV12, purchased Dec 2001.

Last night it went pop, and now I have no sound and no picture. When I turn it on or off I get a repeating sound . ( It sounds like a a dvd turning about 5 to 7 times. But this TV does not have a dvd. )

I do see 4 blinks on the LED when I turn it on.

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  • bbtwilley Sep 30, 2008

    Same problem here.. does the exact same thing, and my friends does this as well. Sony.... please help... you are our only hope

  • Sony WEGA Oct 19, 2008

    I have the same problem. It happened to me on Wed the 15th of October. On the 17th I was just playing around with it and it turned on. Of course after I turned it off it hasn't came back on. It too blinks for times when on standby. Any quick repairs could be done or is it even worth it? Please advise.

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SOURCE: My Sony Trinitron won't turn on...has 4 blinks in Standby.

Hello,
There are 3 reasons for 4 blinls
1.unit went to stand by mode because of h-pulse
2.Vertical defflection pulse stopped
3. power line is shhorted or power supply is stoped.

Solution:
1. check 13vdc on A board of powersupply stage
2. Check IC561 on A-board.

Good Luck
Dals123

Posted on Oct 15, 2008

  • 8909 Answers

SOURCE: no sound, no picture standby

  • 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.

Posted on Nov 12, 2010

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The standby light should be blinking in a pattern. Count,pause,count... Please post the count and that will indicate the circuit in which a problem was detected. That will allow me to give you details and possible solutions.

Thanks,
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2 Answers

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The 4 blinks indicate a vertical deflection problem. Either the connections on the legs of the vertical IC are bad or the IC is defective. If you can solder, you can fix this yourself. Let me know if you wish to attempt the repair and I'll provide more details and instructions.

Dan

Oct 02, 2008 | Sony FD Trinitron WEGA KV-32FS120 32" TV

1 Answer

My Sony Trinitron won't turn on...has 4 blinks in Standby.


Hello,
There are 3 reasons for 4 blinls
1.unit went to stand by mode because of h-pulse
2.Vertical defflection pulse stopped
3. power line is shhorted or power supply is stoped.

Solution:
1. check 13vdc on A board of powersupply stage
2. Check IC561 on A-board.

Good Luck
Dals123

Sep 08, 2008 | Sony FD Trinitron WEGA KV-32FS120 32" TV

1 Answer

My Sony Trinitron won't turn on...has 4 blinks in Standby.


This may be a vertical circuit problem. IC1509 is usually the vertical IC. If you can solder, I would first try an resolder the pins on this IC. If that fails to resolve it, replace the IC. This IC is a small flat IC attached to a heat sink with about 11 pins. It will be marked LA7837 or something similar. Feel free to post the marking and I'll confirm you have the correct IC.

Keep me posted.
Dan

Sep 05, 2008 | Sony FD Trinitron WEGA KV-32FS120 32" TV

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