Sony Grand WEGA KF-42SX300 42" LCD TV Logo
Posted on Dec 22, 2012
Answered by a Fixya Expert

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Picture and sound turn off every 30 seconds but green light stays on

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Anonymous

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  • Sony Master 14,553 Answers
  • Posted on Dec 22, 2012
Anonymous
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It may be the lamp this model uses about the fail completely.

5 Related Answers

Anonymous

  • 1 Answer
  • Posted on Jul 06, 2007

SOURCE: TV shuts down

Remove the lamp assembly, There will be a screen on the top and bottom of the assy remove all dust from these screens. also check the tube at the top of of the lamp receptical this is an air cooling pathway. reassemble and fire it up. This worked for me and saved some serious coin judging from some of the other solutions I have seen (lamp and balast) ouch!!!

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Anonymous

  • 1 Answer
  • Posted on Sep 14, 2008

SOURCE: TV Picture Goes Black

I had the same exact problem.
I removed the bulb and cleaned it. There is a small screen at the top of the bulb and it was covered with dust. Once it was cleaned I replaced the bulb and it solved the problem.
Thanks to those who posted the solutions

Anonymous

  • 10594 Answers
  • Posted on Mar 15, 2009

SOURCE: Sony- KDF-50E2000

Have you replaced its Lamp?
Symptoms shows TV needs new lamp.
Please always buy original Sony lamp for replacement.

Anonymous

  • 2 Answers
  • Posted on Mar 21, 2009

SOURCE: Power/Standby light blinks green then screen goes blank (off) for

I have a similar problem. Just found out a possible solution yesterday. I am waiting for my lamp but here's what you need to do if you have replaced your lamp. Go into self diagnostics mode: Switch of your TV via remote, you will see red standy by light. Now,on the remote press "Display"=>"Channel 5"=>"Volume Up"=>"Power Button". All these keys need to be pressed within 3 seconds. You will now enter the diagnostics mode. Press "Jump" on remote (bottom right) 3 times and then press "Channel 2" 9 times. The screen will display your current lamp hours used.

In order to reset your tv to factory settings and for the new bulb to work you must reset this timer or else your TV will assume you are still using the old bulb and will automatically kick in "over protection mode". So here's what you do once you do on the lamp hours display screen. Press the "Channel 3" button on the remote 3 times then "Mute" then "Press Enter" to reset the timer to zero. Your TV should now work as normal. And remember, whenever a part is replaced all factory settings must be reset to zero. To do this, follow "Display"=>"Channel 5"=>"Volume Up"=> "Power Up" to enter service mode. Finally, press "Channel 8" and then "Enter" to put the TV back to factory settings.

The above mentioned is usually performed by a service technician and they charge somewhere around $95 diagnostic fee. You just saved this charge. If you see flashing red lights count them when they flash in sequence. This is a code for the techs to tell them what is wrong. These flashing red lights sequentially flash from 0 to 10 times to identify a problem. Usually, when the bbulb goes bad the only thing that might need to be replaced would be a "lamp Driver" aka "Power Block Assembly" $116.25 online from Sony, or the ballast. Sometimes, if you do not have a video a Thermal FUse can go bad which only costs $4.80 for the KDF60-XS955 but the techs will charge you over $300. You can do this yourself if you can get your hands on a service manual.

Hope this info helps.

Good Luck to you all.

Anonymous

  • 10594 Answers
  • Posted on May 19, 2009

SOURCE: TV powers off after 10 seconds of powering on....

Thats great, Please rate solution.

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