Question about Mitsubishi WD-60735 Projection Television

5 Answers

Replaced lamp in wd-60735 and after i plugged back in and after reboot process is complete when i hit power the green light comes on and you can hear static like tv is on an inactive channel, but after about a minute it shuts down. there is no blinking lamp light or anything and you actually have to unplug it and let it reset before you can attempt it again

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  • costaelectro May 27, 2011

    That has already been done. the green light will blink for about a minute indicating a reboot which is what should happen. just to let you know i own a tv repair shop and this is about the fourth set with this condition that has come thru my shop. although I have great confidence in my technician i think he gets frustrated with dlp sets quirkyness. his suggestion is always the same to replace with reconditioned light engine which is too expensive of a fix and customer always chooses not to repair. I am sitting on two that I hate to send to the recycler like the previous ones and i was hoping to get lucky and find a quick fix from someone who may have run across this problem. and also i'll let you know we have replaced the ballasts and tried both osram lamps and phillips lamps. its just funny because the lamp light never blinks just a steady green power light for about a minute until it shuts down and locks up. Sorry to doubt anyone but im really doubtfull anyone will be able to give me a solution on this but i will be very greatful if they can!!!!

  • costaelectro May 27, 2011

    just received your other response and i will try that tomorrow and let you know what it does. Thanks

  • costaelectro May 27, 2011

    Good morning I got a 66 code which according to the service manual is cause by a loose cj4 connector or bad lamp or loose hv connector between lamp and ballast all of which have been checked. the question now is where is the lamp enable signal being lost? which board? which micro? Tech said it was very hard to narrow down :(. You got you a good brain teaser now! Appreciate any advise or tips. Thanks Alex

  • costaelectro May 27, 2011

    I got a code 66 which according to service manual indicates bad connections @ cj4 or lead between ballast and lamp or lamp itsself, which have all been checked and eliminated as possibilities. My tech says that the lamp enable signal is being lost somewhere in a micro on one of the boards but it is very hard to isolate which one it would be. hope you needed a good brain teaser! If you can take this info and see if you or anyone you know in the trade has had this problem and know an easy fix to it that would be greatly appreciated! Thanks for the effort,

    Alex

  • costaelectro May 28, 2011

    please read all the comments for this thread

  • costaelectro May 29, 2011

    Again Please read all the comments in this thread before you try to answer!!

  • costaelectro May 29, 2011

    Please read all comments in this thread and give it another shot if you may have a an idea. Thanks, Alex

  • costaelectro May 29, 2011

    Please read all comments posted in this thread and give it another shot!

  • costaelectro May 29, 2011

    please read all my comments in this thread and give it another shot

  • costaelectro May 29, 2011

    Thanks for the response I was'nt sure if it went thru or not. I actually sent it a couple of times because it didnt look as if it was going thru on my end, but anyway thanks for the clarification and I could use all the luck i can get on this one.

  • costaelectro May 29, 2011

    Please read the entire thread and give it another shot! Thanks, Alex

  • costaelectro May 30, 2011

    Please go back and read the whole thread and give it another shot. By the way self diagnostic comes back with a 66 code but more specifics are found in the additional comments in this thread. Thanks Alex

  • costaelectro May 31, 2011

    Hello thanks for the response. Unfortunatly I cant send you a copy of the service manual but any info you could give me would be greatly appreciated. I'll also pass the last suggestions along to my tech

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5 Answers

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In mitsubishi, the self-test diagnostic blinking will not be there by default. You will have to activate it by following the procedure below after you unplug and re-plug
Procedure:
After you unplug when the standby light is on, press and hold the "Menu" and "Device/Input" buttons on the front panel of the tv for about 5 seconds. The LED will flash a certain number of times, pause for a while and then blink again. Count the number of blinks before and after the pause then post it here and I will tell you whats the source of the problem.

Sai.

Posted on May 29, 2011

  • eagle338
    eagle338 May 30, 2011

    Sorry about that. Reading the comments it seems like you are not getting the Lamp Enable signal. This signal is sent out by the DMD board. When this signal occurs there will be an increase of voltage on two of the pins (where the connector from teh DMD plugs into the ballast ) for a split second before it goes off again. Its been a while since I have worked on this set so I think I am gonna need a service manual to be specific. I will try to look it up in my collection or you can just upload the one you have to a file hosting site and get me the link. I should also tell you that the LE signal will not be sent if the High Voltage generator on the ballast is malfunctioning. Measuring the input and output voltages of the ballast would be the first thing to do.

  • eagle338
    eagle338 May 31, 2011

    Ok thats all there is to test. Verify if the lamp enable signal is there or not. It goes from DMD to DM power and then to the ballast . Test the input voltage to the ballast. If the input voltage is there and the output voltage is around 320V the ballast is OK. If you get the lamp enable signal to DM power but it does not go through to ballast then DM power is faulty. If everything is normal but the output voltage of the ballast is less than 320V (upto 15v error is ok) then the ballast is faulty. I found the service manual in my collection so no problem with that

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  • Mitsubishi Master
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Hello
System booting is not get completed. Do a system reset.

Press the SYSTEM RESET button on the
control panel

The TV will turn off and the green LED

will flash quickly for about one minute.

When the green LED stops flashing,

you may turn on the TV. The changes

you made most recently, before using

SYSTEM RESET, may be lost. Changes

you made previously, however, are
not lost.
If this does not help, try TV reset. You can had its proceedings described in its user manaul.

Posted on May 29, 2011

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  • Mitsubishi Master
  • 2,098 Answers

Hi,
Please Reset the tv by pressing the "System Reset Button" on the front panel with a pointed object such as pencil or paper clip.
Try again the unit. Let me know the status of the LED light (Power/timer led, Status led, Lamp led) in the front panel if still the symptoms persist.
Jdvillanueva

Posted on May 27, 2011

  • Jdvillanueva
    Jdvillanueva May 27, 2011

    You may also do the "Error Code Operational Check".




    Note: The TV must be in "Shut Down" and not have been switched Off, to perform the Error Code Operational Check.




    Pressing the front panel "INPUT" and "MENU" buttons at the same time, and holding for 5 seconds,

    activates the Error Code Mode. The "TIMER LED" flashes denoting a two digit Error Code.




    Note: The front panel buttons must be used, NOT those on the Remote Control.

    > The number of flashes indicates the value of the MSD (tens digit) of the Error Code.

    > The flashing then pauses for approximately 1/2 second.

    > The LED then flashes indicating the value of the LSD (ones digit) of the Error Code.

    > The Error Code is repeated a total of 5 times.

    Example: If the Error Code is "23", the LED will flash two times, pause, and then flash three times.



    Let me know what the code is to assist you further...



    Jdvillanueva

  • Jdvillanueva
    Jdvillanueva May 27, 2011

    Ok, bro...

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HI, Thanks for using FixYa! I need some more information. What prompted you to replace the lamp to begin with? Did it blow or did you do it because you weren't getting a picture and saw the flashing LED on the front of the TV? Also, where did you get the lamp from? Did you order it directly from Mitsubishi or did you get it from a third party online retailer? If you got it from a third party was it just a lamp or did it come with the cartridge as well and you reused the original cartridge that the lamp you replaced was in? Also, could you tell me what prompted you to reboot the television after you was replaced the lamp. That process is not normally required for a simple lamp replacement. If I get more details I should be able to help you.

Posted on May 28, 2011

  • Shawn O'Halloran
    Shawn O'Halloran May 29, 2011

    Alex, just an FYI, we don't see the entire thread as experts. For example, I only see my comments, your initial question, your responses to me and your responses to other experts comments. We don't see the comments that the other experts add until after the problem has been resolved. I know how frustrating it must seem to see people asking stupid questions over and over again or offering the same advice over and over again, but it's unfortunately a very badly designed system they have for this site.

    Now that being said, thank you for the abundance of information you provided. After all of that, it's obvious that you aren't just some guy who can't figure out why his lamp isn't working on his TV and you've gone through a lot more than just replacing a lamp. I'm not going to waste your time trying to grasp at straws without having the set in front of me and doing as your tech suggests and that is fully diagnose, investigate and isolate the problem. I don't think there's a simple fix for this at all and as noted, the big issue is going to be isolating where that problem of communication being lost is. Good luck, I hope it all works out and have a great holiday weekend! -Shawn

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  • Master
  • 373 Answers

Mitsubishi DLP TV's have a system restore button on the front. Use a ball point pen to press.

Posted on May 27, 2011

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