Question about Sony Grand WEGA KF50SX300 50" Television

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Sony Grand WEGA KF50SX300 50 in. Just turned it

Sony Grand WEGA KF50SX300 50 in. Just turned it on and it's flashing between the green and red standby buttons and the screen is blank. Turned it on and off and all the other obvious stuff. any ideas

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  • steve_mckenn May 28, 2010

    Yeah that's the model: http://www0.epinions.com/specs/Sony_Gran...

  • steve_mckenn May 28, 2010

    Yeah that's the model. Just googled it to be sure and checked the backplate again.

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  • 116 Answers

No info on the model listed. Please verify mod #

Posted on May 28, 2010

  • Paul Buscema May 28, 2010

    Very strange. I googled as well and you are correct, but this is not listed in the data base.

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TV WONT COME ON AND THE LIGHT KEEPS FLASHIN RED AN GREEN ON THE STANDBY BUTTON


  1. If your Sony Wega will not turn on, the front green light blinks, you hear a faint whirring sound and the green light turns red and flashes, it probably means the lamp inside the set is no longer working. If you noticed the screen beginning to dim in the preceding days or weeks, this most likely is the cause.

  2. If the green light flashes and the picture comes on momentarily but then goes off, and the green button flashes until the set restarts, then the seal around the lamp mount is loose and needs to be refitted.

  3. If the picture on your Grand Wega cuts in and out and the green standby light flashes, both of the set's STKs need to be replaced. STKs are small chips on your television's circuit boards and are identifiable by their labels. The specific STKs used in your Grand Wega TV will be identifiable by the numbered labels on top of the STKs.

  4. When you plug in your Sony Wega and hear a loud popping sound, it's probably caused by a defect in the high-voltage circuit. Let the professionals take care of this one.

  5. If, after turning on your Sony Wega, you can hear your set but the screen is black, you most likely need to replace your projection lamp.



Read more: How to Troubleshoot a Sony Grand Wega ' eHow.com http://www.ehow.com/how_5243554_troubleshoot-sony-grand-wega.html#ixzz1EoY37gpC

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1 Answer

MY wega 42inch wont turn on...the little green light flashes like five time as if it where to turn on but never does...and then it turns red and flash six times pauses and then again the red light flashes...


Six blinks indicates a faulty power supply. often caused by open thermistor located at under lamp assembly or beside it. Or a defective regulator on power supply section.. Check the thermistor and replace if found defective.. Or contact the nearest Sony service center at your area.

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there is a 12v cable to main board it prob has a dry joint

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5 times Red LED blinks means Lamp Driver Error. (KDF-55WF655)
2 possible reasons, either Lamp is gone or Ballast Supply got bad.
Replace lamp first, in most cases it solved the problem.
How old is this TV and did you replaced lamp recently?
Thanks.

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My sony wega 60 inch tv will not turn on. The


I bought a new blub for it and the light still goes green then red.Anybody know?? mg

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SONY GRAND WEGA KF-50WE610 can't turn on TV screen.


Ths 5 blinks usually indicate an AKB problem. There is a break in the video path. I'll look up your specific model and post the results here. Please update this if you wish to attempt the repair yourself.

Thanks,
Dan

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1 Answer

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Green flashing is normal. Red flashes are error codes. Count the error flashes.

3x - Lamp cover position or cover detect switch bad.
4x - One or more fans failed RPM test
5x - Lamp power supply/ballast failure
6x - Thermal fuse failed (usually)

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