Question about Sony KDS-R50XBR1 50" HDTV

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Sony SXRD (KDS-R50XBR1) fan question

Okay I got the dreaded red blinking light 4 times on my 50" Sony SXRD. I called Sony and they said it's a fan not working correctly. I took the back cover off and when I power up both fans kick in for about 5 seconds until the green blinking light in front turns to the red blinking light.

My question is, does this sound that like a fan problem since both of them kick off at the same time after getting the red light special? Fans are not dusty at all.

Also I heard there are 2 more fans somewhere in the TV. I can't locate them. Does anybody know these fans are located?

Any advice would be greatly appreciated.

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  • uniflogger Feb 14, 2009

    Does this sound like a replacement lamp concern? I have one ordered, but will the TV kick-off the fans and give me the blinking red light for a bad lamp?

  • uniflogger Feb 15, 2009

    I blew off both rear fans, including taking out the larger fan out of the TV and cleaning it throughly. Fan blades move easily and did not have a lot of dust on my blades at all. I did find one of the fans on the light engine you were talking about. Its located between the large fan and the lamp. You have to look behind a small circuit board, but can see the drum type blades. I blew these fan blades also. I then plugged the TV back in and could see with the back cover still off that the lamp was on. I got a green blinking light for about 2 minutes. During this time I could see all three fans operating fine, then the TV kicked off with the 4 blinking red lights.

  • Gilly74 Feb 28, 2009

    I am having the same issue with the flashing green light for a couple of minutes then two red lights the bottom of which is flashing.  Does this mean I have a bad lamp or are the fans not working properly?  Before this occurred we did hear a click sound.

  • uniflogger Mar 09, 2009

    Just following up.

    TV Repair called and the video board is no good. He said this is a $900 part or repair. I can't remember much after he told me the bad news. I can't believe this is happening to me overcame me.

    Has anyone else heard of this being a problem and is a video board for a TV a $900 part?

    Any guidance or opinion would be gradly received.

  • uniflogger Mar 09, 2009

    Just following up.

    TV Repair called and the video board is no good. He said this is a $900 part or repair. I can't remember much after he told me the bad news. I can't believe this is happening to me overcame me.

    Has anyone else heard of this being a problem and is a video board for a TV a $900 part?

    Any guidance or opinion would be gradly received.

  • Shahid Electronics
    Shahid Electronics May 11, 2010

    TV has lamp LED and that would be solid if lamp is dead.
    4 blinks is an issue of fans or one of 4 fans not running.

  • Shahid Electronics
    Shahid Electronics May 11, 2010

    Rest of 2 fans are located in light engine and I would not recommend you to open light engine as its purely qualified technician job.



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There are 2 more fans, 1 is in the middle of the base housing, 2 screws, should be clean. the other is on the left behind the circuit board in a black housing. This fan when i removed it was CAKED with dust and there is no way it could have had any effect on air circulation. the fan is inclosed and you have to take out the whole circuit board to get to it.

Posted on Jun 06, 2009

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Try to access the self-diagnosis screen. With the TV off, push in sucession, the "mute, then the number "5" button, and then the volume down button, and finally the pwer button. When the picture comes on, there will be a list of different circuits and to the right are numbers which represent how many times that particular circuit had a malfunction. Sometimes the red blinking LED code is itself in error, so this may help to clarify the root cause of your problem. Now, if the TV will not stay on long enough to perform the previous operation, you should consider replacing the large exhaust fan that is in front of the lamp assy. This has been the problem fan in these sets.


Posted on Feb 16, 2009


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