Question about Mitsubishi WD62327 TV

3 Answers

Replace bulb allready replace fan still fan goes on then turns on 2-3 seconds goes off then the tv shuts off from green light flashing 2 red modelwd52526

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  • Robert Gutierrez
    Robert Gutierrez Aug 01, 2010

    mitsubishi model 52526 I replace bulb & fan green light flashes fan goes on then off then red starts nothing on tv push reset button still same proses

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3 Answers

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  • Mitsubishi Master
  • 12,061 Answers

This is a classic switchmode power supply, shutting down to avoid a fire, explosion, or both. This set had developed a problem, that is so severe that the set must be shut down, This set should be removed from the Power, and in my professional recommendation, you should get a "Quote" for repair, from, an Mitsubishi , Approved Service Center, this point is very important for a good result, Always contact, their local, "Head Office" Now, when you get the information you want, then you can decide as to repair of replacement. The reason we want an approved agent, is that way, all the engineers are trained on their own brand sets, they have seen almost all faults, and will get the job done quicker, and for less cost, and usually have parts on hand.

Hi, well I applaud you for wanting to have a go and try to repair you set. But PLEASE, start in the right place, otherwise you will simply waste your time and money, You see, you MUST start, in the right place, The power supply, FIRST, as, if, that isn't right, nothing else can be. But you simply cannot do anything without a Service Manual. In this it has everything one needs to repair the set. OK if it is shutting down, after that amount of time, of working and then faulting, then it is most definitely a "Thermal" problem, the way we "Find" problems such as this is "Freeze Spray" you use this on each component that is suspected of being the "Culprit" and you will soon,find that errant component. Now, also not every fault is a Capacitor, I see many, many people that think, that Capacitors are always the "Culprit" and replace them, because someone else had done so and it worked, well that maybe sometimes true, but most Symptoms, can, and do have many, many different "Causes" & also, now while that may be true in a few cases, a faulty Electrolytic Cap, or even, ordinary, Cap goes faulty, this is only a SYMPTOM, something has damaged those caps causing them to "Fail". One MUST always find the root "Cause", otherwise if you just treat, the SYMPTOM, the "Cause" will just make the "Symptom" come back, in short order, as the prime cause still, hasn't been fixed., Now Capacitors hate AC ripple, or Over Voltage. Thats it. Oh.. and Heat, if these Capacitors, are too close to a Heat Source, then thats a prime cause of failure. Resistors, hardly ever go faulty,and if they do, it is generally obvious. However it doesn't hurt to check values with our Multimeter. Remember though resistors are made, with up to 20% tolerance from stated value, as such, are not too critical, unless in Timing circuits etc. Always check, the Values, of resistors, as with any other component, with the power OFF. Now Diodes especially "Zener Diode", are another thing to check, those and ordinary "Signal Diode" should always be suspect. next we have Transistors and IC's. The Transistors MUST ALL be checked to see if they have a good, "Junction" this is done, with our meter set to "Diode Test" and usually are about 0.6 to 0.7. With IC's you must check, voltage levels, or Logic Levels, going in and out, have a look at the circuit diagram, and it will tell you what they should be. It is a good idea to always measure the Power Supply voltages, see if a "Rail" is Low, that will be because some component has gone somewhat or all short circuit, to Earth, now, if the "Rail" is Higher, suspect an "Open Circuit" component, like a Diode, or Transistor. The voltages expressed in the manual are spot on, ANY variation MUST be investigated. I have been doing all this for over 30 years now, and I do indeed wish, we could have a set of "Symptoms" and be ables to say.. "Oh that;s the so-in-so and replace this" however unfortunately this although does happen, most "Symptoms" can have literally tens, of "Causes" all often "Interlinked" One simply has to do a methodical troubleshooting procedure, and always think, "are my Voltages Correct" as this is how, you Fix the problem, by making them so. Keep up the good work. If that link above doesn't furnish a Service manual, it is imperative you get one, even if you must pay for it. It will pay for itself in about 2 mins.

http://www.retrevo.com/support/Mitsubishi-WD-62327-TVs-manual/id/276ag910/t/2/
Above is your user manual, below is your service manual.
http://www.eserviceinfo.com/downloadsm/27662/Mitsubishi_WD-52327%20%20WD-62327.html

Posted on Aug 02, 2010

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  • Mitsubishi Master
  • 11,800 Answers

Flashing red means that the power source has cut power to the fan when an overstress/short was detected . To find why you must read the error code: press the front panel “DEVICE” and “MENU” buttons at the same time, holding for 5 seconds, that activates the Error Code Mode. The LED will flash a series of flashes, denoting a two digit Error Code. Post that code here in a reply for a more precise diagnosis.
If nothing happens when you press those buttons that means that the control processor has failed. This is a major failure, the tv must be thoroughly investigated since other failures will surely be present also. This must be done by a pro and it will be expensive. Get a quote before repairs, on such an old unit it might not worth it.

Posted on Aug 01, 2010

  • Azrael SRL Aug 02, 2010

    The unit has a malfunction - an actual part has died, it's not a settings problem.
    As you can see in the manual at page 71 when this happen you must call a service center, there's nothing more than can be done without testing and replacing the failed part.

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  • Master
  • 10,515 Answers

Hi,

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 input/or 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.

Is it 2X2 error blinks ?????

Good Luck!!

Thanks!!

Posted on Aug 01, 2010

  • taran_2005
    taran_2005 Aug 01, 2010

    Thanks for your response!!

    I didn't understand - What exactly are you trying to reset?

    This is a hardware failure and needs repair. There is no reset option on this model.If there is no specific sequence of blinks, it is more suggestive of ' faulty power supply board '. If you have experience in repairing electronics, could read schematics and know how to use multimeter and soldering iron - revert and i would be able to give you some pointers.

    Good Luck!!

    Thanks!!


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