Question about Sony Grand WEGA KDF-60XBR950 60" Rear Projection HDTV

5 Answers

Sony Grand WEGA KDF-60XBR950 60 3 RED BLINKING LIGHTS

Upon turning on this TYV tonight it now has a red blinking light (3 times) and after a couple of minutes powers off. Was working fine yesterday. Replaced the bulb less than 6 months ago. Check to make sure the doors and covers were all secured.

Any idea? Thanks

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  • miketurp Jul 01, 2008

    Unfortunately that solution did not resolve the issue. I left the TV unplugged overnight and tried it again today with the same resultes. 3 red blinking lights and the after about 30-60 seconds the TV powers off.



    Anything else to try?

  • miketurp Jul 02, 2008

    posted by miketurp on Jun 30, 2008Report abuse


    Upon turning on this TYV tonight it now has a red blinking light (3 times) and after a couple of minutes powers off. Was working fine yesterday. Replaced the bulb less than 6 months ago. Check to make sure the doors and covers were all secured.

    Any idea? Thanks
    Comment by miketurp, posted on Jul 01, 2008
    Unfortunately that solution did not resolve the issue. I left the TV unplugged overnight and tried it again today with the same resultes. 3 red blinking lights and the after about 30-60 seconds the TV powers off.

  • miketurp Jul 02, 2008

    I will try vacuming the fan later and blowing away any dust. Do you think the problem could be similar to the one discussed that this site........



    http://www.agoraquest.com/viewtopic.php?...

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5 Answers

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Power supply troubleshouting:
(Some experience in electronics repairs and measurements needed)
remove the TV back.
Locate the big mains smoothing capacitor (near the mains input usually) its often 40uf-220uf 400v on 240v mains.
Switch on and test the voltage across this capacitor and expect 300volts or more (320v average uk) or 1.414 times the mains RMS voltage
Sony Grand WEGA KDF-60XBR950 60 3 RED BLINKING LIG - 07d6466.jpg If 300v is ok at the mains smoothing capacitor
then check to see if 300v is reaching the chopper transistor
(middle leg) and its not at the other two legs.
If 300v is ok at the mains smoothing capacitor
then check to see if 300v is reaching the chopper transistor
(middle leg) and its not at the other two legs.
d6fc2da.gif now check the output from the chopper transformer it will usually have at least 2 outputs
one is HT ,about 95v to 115v for 14" to 115 to 150v 28" screen and the other LT will be about 10v to 20v
if HT very low then check for shorts across loptr or tripped crowbar
if 30v to 70v then use wire link to short out the base /emitter of the loptr, if voltage rises then loptx is probably gone.

Posted on Jul 02, 2008

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Hi-

If you have tried cleaning and reseating the lamp for it and still you are getting the 3 red lights, chances are there is a problem with the mainboard itself, if product is still within warranty, call your manufacturer for Home service, if not have it service. These lights indicate a fatal error internally. Thanks for using Fixya!

Posted on Jul 02, 2008

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The 3 blink code indicates an over voltage condition detected and the set shuts down. This is usually a problem with the resulator IC in the power supply circuit. I don't have the manual with me at the moment, so I can't give you the specific part. This type of repair will usually run about $25 or so for parts plus hte local labor rate. I'll loko up the specific part(s) and post here.

Dan

Posted on Jul 02, 2008

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Most of the red blinking light. Problems can be fixed with a can of air and a vacum.
what happens is the sensors around the cooling fans get so dusty they send false signals that ether fans have stopped working so you either get an over heat code etc.
you need to first vacum the dust out of the vents on the back then with the can of air blow out as much remaining dust as possible.
this always eliminates the red light syndrome for me.
Hope that helps........

Posted on Jul 01, 2008

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It seems there is power supply related issue like overheating, I suggest you to try again after keep the TV unplugged about 30 minutes.

Posted on Jul 01, 2008

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