Question about Mitsubishi WS-73713 73" Rear Projection Television

1 Answer

Powers ON then OFF after only 6 seconds?

First, Thanks for helping me fix the initial Problem: I had the "Eternal Blinking Green Light". I took the box up to my TV Repair Store & had him replace the 4 "Popped like a Coke can" 15V 1000ui caps with 4 new 1000ui 35V caps. Then I brought it home & installed it.

Green light STOPPED blinking......Thanks a million! Now...when I Power ON the TV it comes ON for about 5-6 seconds clicks & Powers OFF on it's own. What the heck is going on? I have tired head.....I thought I had it fixed!

Please share with me what you think it might be or is. I reset the TV & pushed the MENU button for over 10 seconds....and still the same problem.

Silver Lining: At least we fixed the "Eternal Blinking Green Light".

Thanks in advance for your assistance & recommendation(s)....

Steve :)

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  • Red Rocker55 Nov 30, 2007

    Hello again Bill,

    Thanks again for your help & assistance! I did as you recommended by removing the E2P module. Must not be it.....the TV Powered on for about 5 seconds, then clicked & Powered OFF again....No picture at all. I'm in the freakin' weeds on this?



    I then put it all back together & did the Self Diagnosis feature & it blinked 2-1 = X-ray protect (high voltage or beam current). What pray tell does this mean?



    What do you recommend my next step or steps to be?



    Thanks a million again for your help,

    Steve :)

  • Red Rocker55 Nov 30, 2007

    Thanks Bill for all of your help & assistance! I really appreicated it! I'm way in over my head....so I'm going to call my Electronics store to come out to repair it.



    Merry Christmas to you & your family,

    Steve :)

  • chumley47 Feb 06, 2009

    my tv turns on for 6 seconds and then clicks off with no picture

  • Anonymous Mar 14, 2014

    I have 2 green blinks, then 4 green blinks

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  • Master
  • 934 Answers

The caps you're describing are in the power supply of the DM and a very common problem. Another problem in that same box is the E2P module. The E2P is a small board towards the rear of the module plugged into the module with a multi-pin connector. Unplug the E2p and re-install the DM and see if the unit powers up... If it does the picture won't look very good but at least you'll know if the E2P is keeping it down.. If it still won't power you've eliminated the E2P as a porblem.
Next let's take a look at the error code for some clues. This model is equipped with a self-diagnosis feature to help with diagnosis of shutdown problems. To activate this turn the unit on let it shutdown then press the device and menu buttons on the front panel simultaneously and hold them in for 5 seconds after 5 seconds the power LED on the front panel will blink a two digit sequence. This will be one set of blinks a short pause then another set of blinks, this will repeat 5 times. 1 - 2 = no error detected 2 - 1 = X-ray protect (high voltage or beam current) 2 - 2 = Short protect (short protect monitors low voltage supplies) 2 - 3 = Deflection protect (this could be loss of vertical or horizontal deflection) 2 - 4 = Vertical protect (usually loss of vertical from the source)
Then, let me know what you find...
Bill

Posted on Nov 29, 2007

  • William Rayburn
    William Rayburn Nov 30, 2007

    The only nest step is to troubleshoot the power/signal module. That's the large board that the DM plugs into... Most of this will require at a minimum a 20m scope to trace test signal and logic.

    What's happening now could and most likely is in your low voltages - 5, 9, or 12 I'd suspect and all of those are located on that board together with the main stage regulator...

    If you don't have a scope your only next option would be to unbutton that board and send it into PTS Electronics for bench testing and repair. Their web site is: http://www.ptscorp.com/ and their contact number is: 800-844-7871...

    I believe their bench testing fee is $50.00 dollars and that's incorporated in the cost if a repair is required... These guys are good and quite reputable. Techs like myself to handle overload in the shop..

    Make sure to pack the board well. A little foam rubber top and bottom will work nicely and fill-in the gaps with foam peanuts.

    Their turn-around is about two weeks - maybe longer with the holidays upon us.

    Good Luck and let me know...

    Bill



    premtech@willapabay.org

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