Question about Sony Grand WEGA KDF-42WE655 42" Rear Projection HDTV

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TV will not come on

When I turn the TV on the picture will not come on and the red and green light flashes on and off alternately at the front.

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Re: TV will not come on

Please count how many time it flashes before pausing. This is very important to us.

Best regards

Posted on Dec 27, 2007

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I have a SONY KF-WE50 rear projection tv, a few weeks ago it started to turn the pic and sound off while the green light was flashing around 30 times. After the light finished flashing both the picture and...

the green is the reboot process and is normal.
the red light is an error code indicator.
count the blinks of the red cant be 30 times (I think)
it will blink a sequence, pause, then do it again for a total of three times.
count carefully, it gives you three chances to catch the number it is blinking.

Apr 13, 2011 | Sony Projection Televisions

1 Answer


  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 '

Feb 23, 2011 | Sony Grand WEGA KF-42SX300 42" LCD TV

1 Answer

Turn tv on,picture good for 4 seconds,then green curved line like a rainbow all green,then 4 green sequence flashes,picture goes out theN volume continues for 2 seconds then out front red power light then...

This is a set with bad picture tubes-not available except on rebuild basis.

Are you seeing bright green screen and then set shuts off?

Let me know so I can help--8 blinks is AKB error.


Sep 15, 2010 | Sony KP-51HW40 51" Rear Projection...

3 Answers

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

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?

Jun 01, 2010 | Sony Grand WEGA KDF-60WF655 60" Rear...

1 Answer

Sony tv prolem

If the red light that stays on says lamp check the lamp or replace it-- it may not look bad to be bad.

Apr 19, 2010 | Sony Grand WEGA KF-42SX300 42" LCD TV

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TV won't come on- green and red lights flashing

It may be your bulb.  We just had to replace ours after 4yrs.

Dec 31, 2008 | Sony Grand WEGA KDF-42WE655 42" Rear...

4 Answers

Green flashes then tv turns off

or a new lamp. you could first replace the lamp.
the screen might work fine for a couple of seconds, but then it fades away or deteriorates. This means the lamp is going bad.

Aug 23, 2008 | Sony KP-51HW40 51" Rear Projection...

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Sony KF-WE50

my front panel sound is not working.......?
how i can do this.?

Jan 05, 2008 | Sony Grand WEGA KF-50WE620 Television

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Sony KP-51HW40 No Picture, only sound

to thus problem its very simple .! try to resolder at the back of the picture tube board.

Nov 26, 2006 | Sony KP-53V75 53" Rear Projection...

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