Question about Sony KDF-50E2000 50" HDTV

2 Answers

I was watching tv, then it shut off.Everytime i swiched back on it would shut off and red led lamp light came on. So i pulled up manual online and pulled lamp housing out gently and bulb does not seem to be bad.Filament is still in place. so i replaced lamp housing gently, now the power led light comes on and blinks red 3 times.What could possibly be going on with tv(kdf-50e2000)

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  • 3 more comments 
  • bob647al Jun 05, 2010

    I was watching tv on my Kdf-50e2000 lcd.Then tv turned off.I kept trying to turn tv back on,but it kept switching off. Then lamp light led came on. So i did some research online and looked at manual for this make and model. It said my lamp is probably bad.So i gently pulled out lamp housing and visiually inspected bulb,the filament did not seem broken.So i then put housing back in and closed all doors securely on tv. Then now i keep getting 3 red flashing lights on led power light. If this is just a bulb issue and it is blown then i will just replace,but the power led light is still flashing red 3 times.

  • bob647al Jun 06, 2010

    I have taken back panel off and see the switch i think you are talking about,it has almost like a spring mechanism where the lamp door cover goes.that is seated all the way and tv still has power light led blinking 3 times and tv will not turn on.please help.

  • bob647al Jun 06, 2010

    yeah i see the switch on board and the circuit is being completely closed by lamp panel door. but i will pull lamp again and reinsert and see if that works.

  • bob647al Jun 06, 2010

    Ok no more 3 red blinks on power light, but now the tv goes thru its start up and lamp light comes on.But the bulb looks fine. filament is not broken and there are no pieces of glass in lamp housing. so what could be problem with lamp.

  • bob647al Jun 06, 2010

    No havent replaced lamp. can u suggest a place in tucson az or online that is reasonable.

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2 Answers

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Hi,
3 times red power light blinking shows that lamp cover is not fixed properly.
Please make sure that lamp cover is placed back in its position securely because lamp cover engages a safety switch inside that sends signal to system control chip that lamp and cover is secure.
Regarding tv shuts off problem, it would be due to weak lamp.
How old is this tv and did you replaced its lamp in last 2-3 years?
Let me know to solve your tv problem.
Thanks.

Posted on Jun 05, 2010

  • 19 more comments 
  • bob647al Jun 05, 2010

    The lamp housing and Cover is seated firmly. You can not close lamp cover door if it does not line up with grooves in tv,so that lever can turn all the way to close position.The tv was manufactured in 2006.And the lamp has never been replaced.The lamp looks fine.

  • Shahid Electronics
    Shahid Electronics Jun 05, 2010

    Get back to you shortly with related exploded view image.



  • Shahid Electronics
    Shahid Electronics Jun 05, 2010

    Thanks for waiting.
    Below images taken from service manual to clear my point.
    First image shows lamp and lamp door.
    Second image shows lamp cover that is plastic cover, the first part that was removed to pull out lamp.
    Hope this will give you better idea.
    Thanks.

    Image-1



    Image-2



  • Shahid Electronics
    Shahid Electronics Jun 05, 2010

    Make sure plastic cover is also seated firmly then turn On tv.

  • bob647al Jun 05, 2010

    Ok it looks exactly like that,but i was not putting other door back on.I did not know that their may be a mechanism on that part not allowing tv to turn on.Hold on i will check it now.

  • Shahid Electronics
    Shahid Electronics Jun 05, 2010

    OK, take your time.
    Lamp assembly engages one switch and plastic cover also engages another safety switch.



  • bob647al Jun 05, 2010

    Everything has been put back correctly and the power light is still flashing red 3 times.

  • Shahid Electronics
    Shahid Electronics Jun 05, 2010

    OK, that means plastic cover safety switch got broken, take off lower back and inspect that switch.
    There is no other reason for 3 times power light blinking.



  • bob647al Jun 05, 2010

    can you elaborate a little bit more.

  • Shahid Electronics
    Shahid Electronics Jun 05, 2010

    Plastic lamp cover notch press one safety switch that seems broken for some reason and causing problem. It is mounted on lamp housing and can only be seen if you take off lower back of tv and check nearby lamp cover area.



  • Shahid Electronics
    Shahid Electronics Jun 05, 2010

    Ok, no problem.
    If switch found broken, let me know to provide you part number and where to buy.



  • bob647al Jun 05, 2010

    Can you please send me a pic of where this panel is,because it looks like the whole entire back panel has to be taken off in order to find this switch.

  • Shahid Electronics
    Shahid Electronics Jun 05, 2010

    OK, I will send you picture after 20 minutes.

  • bob647al Jun 05, 2010

    Thank you, you have been very helpfull. When i think i have found problem i will accept solution. The other tech was being rather rude. I am more than capable to fix the problem i am just seeking a lil assistance



    Thanks Dave

  • bob647al Jun 05, 2010

    Can this switch just go bad,because tv was fine for the past week since my girlfriend moved it from her place to mine and it did not fall or get bumped.And why would lamp light come on first and then now power led?

  • Shahid Electronics
    Shahid Electronics Jun 05, 2010

    That is tinny switch that often got damage while fixing lamp cover.
    Posting helpful image in next response.


  • Shahid Electronics
    Shahid Electronics Jun 05, 2010

    OK, below is an image shows how many screws need to be removed to take off lower back of tv. No need to remove upper big part of back removal.
    Near lamp housing, you will see T2 circuit board (its small green board) and safety switch is mounted on that board that would be broken and causing problem of 3 times blinking red light.

    How was other expert that you said is rude?
    Thanks.





  • bob647al Jun 06, 2010

    I will check it once i return home. But why would this start after a week or so of watching and lamp light came on first.I will take apart later



    Thank You

  • Shahid Electronics
    Shahid Electronics Jun 06, 2010

    OK, please take out lamp and reinstall it as lamp assembly also push one switch and lamp cover push another switch that is mounted on T2 board.
    3 times light blinking is only related with these two switches and just to make sure that lamp is inside tv.



  • Shahid Electronics
    Shahid Electronics Jun 06, 2010

    DLP lamp has limited life span like 3000 working hours, after that time it consume more current than its rating to produce light. DLP lamp is not usual house bulb that has filament, it has 2 electrodes and spark of high voltage between these electrodes produce light and heat as well.
    Now once lamp start consuming more current that means it can now damage its high voltage source (ballast supply) that times protection activates and tv shows lamp light warning, that means time to replace lamp for next 3000 working hours.
    Did you replaced the lamp in last 2-3 years?

  • Shahid Electronics
    Shahid Electronics Jun 06, 2010

    I would recommend to buy Sony original lamp from Sony Accessories Store and required lamp is F93087500
    LAMP BLOCK ASSY XL-2400 available for $200

    Thanks.



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  • 8,619 Answers

Hi


Thanks for using FixYa. 3 blinks is a lamp door error which means that either you did close the lamp door properly and/or the lamp is not seated properly in the TV. To start with take the lamp out and then insert it back, it doesn’t seems to be a bad lamp so you’ll need to check the lamp door switch which might have gone bad. This can also happen if the lamp door switch is just loose, so you can also take the lamp cover off from the back then take the lamp out and try to reset the lamp door switch and then put the lamp back in. Please do accept the solution if the issue is resolved or post a comment for further assistance.


Thanks
Rylee

Posted on Jun 05, 2010

  • 6 more comments 
  • bob647al Jun 05, 2010

    I have done all of this a few times and power led is still flashing 3 times but tv will not turn on. another tech told me to take off lower back cover.

  • Rylee Smith
    Rylee Smith Jun 05, 2010

    As I said it is the lamp door switch that should be replaced to resolve this issue so can even try to jump start it with the switch removed which will tell you that it is the door switch that has gone bad or something else. Please do accept the solution if the issue is resolved or post a comment for further assistance.


    Thanks
    Rylee


  • bob647al Jun 05, 2010

    How would i go about jump starting the switch and what does the other tech mean about taking cover off.Looks like the whole back tv cover would have to come off.

  • Rylee Smith
    Rylee Smith Jun 05, 2010

    Yes right if you are not sure what needs to be done then its better to get it checked by a tech. to avoid any future issues.

  • bob647al Jun 05, 2010

    Not the Answer i was looking for, and i am more than capable to fix myself am just asking for a lil assistance.



    Bye

  • Rylee Smith
    Rylee Smith Jun 05, 2010

    As I said this is a lamp switch error which means you have to keep on trying to reseat the lamp until it goes away or try to reset the lamp door switch. Please do accept the solution if the issue is resolved or post a comment for further assistance.


    Thanks
    Rylee

  • Rylee Smith
    Rylee Smith Jun 06, 2010

    Please do accept the solution if the issue is resolved or post a comment for further assistance.


    Thanks
    Rylee



  • Rylee Smith
    Rylee Smith Jun 06, 2010

    Okay, please post back for further assistance.

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