Question about Mitsubishi WD-52725 52". Rear Projection HDTV

8 Answers

TV turns off and on by itself

At first the tv would go to blue screen for 30 second then go to black where the green power light would flash quickly for another 30 second the tv would shut off and then I could turn it on again for a while until it repeated the problem . Now it just shuts off and then a few minutes later it turns on by itself and then back off over and over. Could this be a bad circuit board?

Posted by on

  • 7 more comments 
  • homexprt Nov 07, 2008

    how do you get to the circuit board where is it located from the back of the tv

  • homexprt Nov 07, 2008

    I would also like to find a repair manuel

  • homexprt Nov 07, 2008

    June 2005

  • homexprt Nov 07, 2008

    Yes about 2 months ago but the problem continued

  • homexprt Nov 07, 2008

    I would like to remove the circuit board from the tv I have taken the back cover off where is the board located?

  • homexprt Nov 07, 2008

    The LED would blink rapidly for thirt seconds before turning off there was no sequence

  • homexprt Nov 07, 2008

    Green

  • homexprt Nov 08, 2008

    I reset the tv and the problem continues. I have also reconnected the cable box from component 1 to component 2 this seemed to work for a few days but then the problem got worse after the two days I no longer got a blue screen instead the tv would just shut off and then turn itself back on 5 to 10 minutes later for 1 minute than shut down again and then turn on again this pattern continued I finally just unpluged the tv. I was told that my circuit board is bad however someone else told who had a similar problem told me he just relaced the capacitors I believe there are three he replaced and his problem was fixed. I don't know if I should do the same if that would fix my problem?

  • homexprt Nov 08, 2008

    I cleaned out the coard from all dust the tv went on worked for 20 minutes then shut down I checked for error codes and got error code 21 but on my service manual there is no code 21 can someone tell me what error code 21 is?

×

8 Answers

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    Superstar:

    An expert that got 20 achievements.

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

  • Master
  • 1,879 Answers

Comment by homexprt, posted on Nov 07, 2008 I would like to remove the circuit board from the tv I have taken the back cover off where is the board located?

Get a service manual first (see other Expert's post for links)

TV turns off and on by itself - dfd689a.jpg

Posted on Nov 07, 2008

  • Level 1:

    An expert who has achieved level 1.

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.

  • Contributor
  • 728 Answers

Try doing a tv reset. You may have a short that is causing your tv not to send power to the places it needs to be and it may build up causing the tv to go on and off. Check your connections to see if they are broken or have a short since it is not showing picture. Then try connecting a dvd player or a game to the aux plugs and see if that works. To reset the tv, unplug it over night and plug it back up and see if it works then. You need to let all of the power drain from the tv to see if you see any improvement. Try using this site to see if you can find the manual for the tv to fix the problem: http://tv.manualsonline.com/manuals/mfg/mitsubishi/wd-52725.html
All you have to do is sign up for a free membership and you should be reading the whole manual in about a minute.

Posted on Nov 07, 2008

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.

  • Master
  • 435 Answers

The reason it is turning on/off is as follows: Whenever a shortedcondition occurrs somewhere in any one of the several independentsections of the tv circuitry it puts an excessive load on the powersupply. The protection circuit constantly monitors the power supplycurrent. Whenever it detects such excessive current it activates thesafety relay and shuts the set down. You probably hear a relayclicking when it shuts off (although you maynot, because some sets usea silent relay and you don't hear it unless you listen very closely).

So, that is probably what is happening. The fact the screen goes greenis meaningful. Most likely there is a failure that is causing the redand blue projectors to shut down; then the excessive load triggers theprotection circuit.

Therefore, I suggest you look for something around the red and bluedriver circuits - - if you know where that is. You will need theservivce manual to guide you on a set this sophisticated unless you arean experienced tv tech/engineer.


You can get the manual for your Mitsubishi for free here:

Free Mitsubishi WD-52725 manual

Posted on Nov 07, 2008

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.

  • Master
  • 899 Answers

You will need to do some resoldering, check the tuner for bad or poor solder( since you had the blue screen) the tuner heats up and will get poor connection and can cause the tv to act in this way , also resolder any parts that have heat sinks or heat up and see if that corrects the problem , if not then what are the blinks on the L.E.D.?

Posted on Nov 07, 2008

  • 4 more comments 
  • jason Nov 07, 2008

    you may have also have got the electrolytic capacitor syndrome , but you will definitly need to be able to perform tests and procedures to determine what is good and what isn't

    are you able to do this? do you have a DMM ?

    you can also have the chassi rebuilt for about $350, just another option

  • jason Nov 07, 2008

    by the way what color is the led thats flashing?

  • jason Nov 07, 2008

    ok ,then this could be the start up circuit , and the solder joints may have just got to hot and are not connecting good or it is a false reading and you may have a bad lamp or the door switch is faulty

    you will need to confirm that the door switch is good and the lamp is good

    first reconfirm the blinking led by a reset or unplug the tv for a min.

    let me know the results

  • jason Nov 08, 2008

    well first try to identify a bulging cap or check for an open connection on the DMM , but also there is a temperature circuit that detects to much heat on the unit , right now those would be the best things to check first

    nothing can be determined right now without some tests to eliminate the possible causes of the failure , but some visual and measured tests can direct us in the right direction of the fault

    can you do some measurements? or have you done some already?

  • jason Nov 08, 2008

    Also just thought you should know that : ALL MITSUBISHI SETS : DRY JOINTS ARE VERY COMMON ALMOST EVERYWHERE
    ALL MITSUBISHI SETS :DRIED OUT ELECTROLYTIC CAPACITORS ARE COMMON EVERYWHERE

  • jason Nov 08, 2008

    you will need to do some resoldering on the board

×

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    MVP:

    An expert that got 5 achievements.

    Sergeant:

    An expert that has over 500 points.

    Novelist:

    An expert who has written 50 answers of more than 400 characters.

  • Expert
  • 196 Answers

Open the tv back cover ,remove the main power supply board, on the main power supply board there will be broken joints in the soldering that lead to the power supply.it will be easily located as u clearly look at the main board area .just get cold soldered on your main power supply board.and let it dry for an hour .refit all the parts properly .and then it should work.
thanks.

Posted on Nov 07, 2008

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    Hot-Shot:

    An expert who has answered 20 questions.

    Corporal:

    An expert that has over 10 points.

    Mayor:

    An expert whose answer got voted for 2 times.

  • Expert
  • 83 Answers

Yes your tv getting problem in his circuit board there is a small problem in the board, A Condenser that holding correct voltage for tv getting dam 

Posted on Nov 07, 2008

  • 1 more comment 
  • rush2robby
    rush2robby Nov 07, 2008

    plz. mention your tv name and model


  • rush2robby
    rush2robby Nov 07, 2008

    ok for your question but i'll need your tv name and model number


  • rush2robby
    rush2robby Nov 07, 2008

    find all tv service manual from---
    http://www.eserviceinfo.com/equipment_ty...

×

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    MVP:

    An expert that got 5 achievements.

    Sergeant:

    An expert that has over 500 points.

    Champion:

    An expert who has answered 200 questions.

  • Expert
  • 435 Answers

Hi, Yes. This could be bad circuit or something (dust or particle) sitting on the circuit board. I would suggest you to just the TV once and see is the circuit board is clean.
If the problem persists, contact the authorized service/ dealer to fix it.

:)

Posted on Nov 07, 2008

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    Superstar:

    An expert that got 20 achievements.

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

  • Master
  • 10,594 Answers

How old is this TV?

Posted on Nov 07, 2008

  • 2 more comments 
  • Shahid Electronics
    Shahid Electronics Nov 07, 2008

    Have you replaced its lamp?

  • Shahid Electronics
    Shahid Electronics Nov 07, 2008

    You can have WD-52725 Service Manual from HERE with little fee.



  • Shahid Electronics
    Shahid Electronics Nov 07, 2008

    check this link..

    http://www.servicemanuals.net/ServiceMan...


  • Shahid Electronics
    Shahid Electronics Nov 07, 2008

    write model number of tv HERE and go to service manual page details.



×

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

When turning on the tv by either remote or switch on side screen will flash blue then turn off. Have unplugged tv still won't turn on.


Search Results

    Samsung TV Keeps Shutting Down - Forums - CNET

    www.cnet.com > Forums > Samsung

    CNETWhen I turn the TV on for the first time each day it shuts itself off within 30 ... There is ablue kill switch there, but you don't want to fool with that. .... The tv will not turn offwith the remote or the side buttons on the tv. .... I replaced the lamp but the tv screen will have a momentary flash of light on the screen then it will turn on and ...

    Philips/Magnavox Tv Problems ? - Home Forums

    ths.gardenweb.com > Home Forums > Electronics
    Mar 26, 2005 - I turned the tv on then off a few tims then eventually the piture would come on. .... time, the LED will flash continuously along with the volume going up to max. ...... You can use the remote to turn the tv off and on but nothing else. ... If you press the power button over and over it stays on a blue screen but as ...

    Top 208 Complaints and Reviews about Akai ' Page 3

    www.consumeraffairs.com > Electronics > Televisions

    Rating: 1.9 - ‎37 votes
    The screen will not turn on with the remote, side switch or rocker arm. .... It will flash for a second and the blue Akai screen will display very briefly, but then .... Akai LCT3201AD TV does not turn on using either remote or power button. ... I turned itoff one night and the next time I turned it on, the green light came on, but it did ...

    Get help with audio, video, or power on Apple TV - Apple ...

    https://support.apple.com/en-us/HT200197

    Apple

Jan 28, 2016 | Televison & Video

1 Answer

My TV randomly switches itself off and the red light flashes continously and i have to pull out the plug. its getting more frequent


Samsung TV Keeps Shutting Down - Forums - CNET

www.cnet.com > Forums > Samsung

CNETJun 11, 2015 - When I turn the TV on for the first time each day it shuts itself off within 30 seconds. ... green light flashing red light is [standby term] green light is [lamp]flashing. samsung plasma 850 picks up other remote signals?
Jun 12, 2015
Samsung LED UN55B7100 turns off on its own.
Jun 11, 2015
Volume goes automatically to 0 on my Samsung LCD TV
Jun 10, 2015
Why TV turns off by itself?
Jul 12, 2012
More results from www.cnet.com

Easy fix for new Samsung TV switching on and off power ...

? 4:41
https://www.youtube.com/watch?v=H0cG3lzjuw8
Sep 15, 2012 - Uploaded by alwaysafix
My tv turns on and off by itself the minute I plug in the cable. .... Samsung E6030 led tv hv blinkin red light ...

Dec 25, 2015 | Televison & Video

1 Answer

Hi, We have a 42" hslc10668phz


generally when you get a constant green light all is ok. these different lights indicate different problems within the tv. so the pattern of lights you mention suggests there is a fault of some kind (is there a troubleshooting section in your manual)? either way it needs to be looked at.

Nov 28, 2010 | Hisense Televison & Video

1 Answer

I have been given a used Samsung TV without manual and have no idea how old it is or the exact size of this particular TV however, it is bigger than a 42''. I have written down the model code, serial...


The front panel LED light indication "LAMP" flashes?Change the the tv projection lamp or LED lamp first,see what happen?Than go from there?Tvs with "LAMP" LED indication light flashes,tv 1 1/2 or 2 years old use like 4 or 5 hours a day.The projection or LED lamp or bulb,inside life span is over.Require changing LED lamp or projection bulb.

Sep 10, 2010 | Samsung Televison & Video

1 Answer

16" lcd new out of box flashing blue light on power indicator


Under a year old tv?This tv have power supply problems.Call the for warrenty repair.Or tries websites like shopjimmy.com,Ebay.com to buy a refurbish power supply board for the replacement.

Jul 14, 2010 | LG 32LG30 32 in. LCD HDTV

1 Answer

Hi. My sony KDF-E50A10 will turn on for about 30 seconds, then the picture and sound go off, the standby/power light flashes 49 times green and the set turns back on. After 30 seconds, the same thing...


tv works for about 2 minutes, then shuts itself off. the red standby light flashes 50 times, then the tv. comes back on for approximetly 2 minutes then goes off again, only to repeat again

Sep 28, 2009 | Sony KDF-E50A10 TV

4 Answers

Tv tunrns on then goes to stand by flashes 4 times & repeats


turn tv on picture comes up 2to3 seconds later tv blacks out then stand by red light flashes 4 times in a row repeatedly..can not turn on or off when stand by light starts flashing but before tv blacks out you can turn tv on and off repeatedly and picture and sound work.You have to unplug power cord for 30 seconds after stand by light comes on to get tv to turn on.

Mar 13, 2009 | Sony BRAVIA KDL-32S2000 32 in. LCD HDTV

1 Answer

TV Problem with shutting off by itself


Mine just did the same thing.  Except for it was green instead of blue.  The service manual states 8 flashes from the light stands for an overvoltage.  After reading the manual for a bit I realized the bottom row of 3 adjuster screws from behind the speaker grill adjust the output for the red, green, and blue colors.  BEFORE OPENING ANY TV OR MONITOR PLEASE KNOW THAT THE VOLTAGE INSIDE CAN KILL YOU EVEN IF UN-PLUGGED so please be careful and only adjust what is mentioned here.  I un-plugged the tv, removed the grill and the board covering the internals, and carefully turned the 3 adjustment screws all the way down.  I then waited about 10 minutes (don't know if this made a difference).  I turned on the tv, turned the channel to an auxilary input (for a black screen), and slowly raised each of the 3 bottom screws one by one up clockwise until i could see a faint green, blue, or red line (depending on the screw), and then turned each one back a hair until the screen was black again.  Only adjust one at a time, the order for colors are blue, green, then red from the left.  I hope this fixes your problems.  Be careful when working inside a tv,  I suggest not using a screw driver to adjust the screws due to the possibility of it slipping and someone getting hurt.

Sep 16, 2007 | Sony KP-51WS500 51" Rear Projection...

4 Answers

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

Jul 28, 2007 | Sony Grand WEGA KDF-60WF655 60" Rear...

Not finding what you are looking for?
Mitsubishi WD-52725 52". Rear Projection HDTV Logo

33 people viewed this question

Ask a Question

Usually answered in minutes!

Top Mitsubishi Televison & Video Experts

matt martin
matt martin

Level 3 Expert

1208 Answers

The Knight
The Knight

Level 3 Expert

73474 Answers

Jaime Hernandez

Level 3 Expert

2311 Answers

Are you a Mitsubishi Televison and Video Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...