Question about Mitsubishi WS-55859 55" Rear Projection Television

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My Mitsubishi Model ws-55859 Wont turn on. The timer light just flashes. Is ther a common fix?

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  • Mitsubishi Master
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ONLY 1 of 2 things can cause this problem----

First thing to do is remove front speaker grill--it should pull out and is secured with plastic pegs--behind it you will find an inspection plate---

Notice the one or two pairs of wires coming from the front keyboard of the set---remove the inspection plate and follow the wires to the right--you can unplug both plugs(most have two and they are marked with letters and different sizes so you cannot get them wrong)

The idea here is to remove the front keyboard with its reset button etc from the circuit---You will still be able to try to turn the set on with the remote---

These sets have a Receiver that is called a DM board--(large metal box to the left as you look from the back) and if the power goes out the green light will blink for about 70 seconds and then go out---it is the Receiver booting up. It is called the DM board.

If disconnecting the keyboard allows the set to turn on--you have a bad reset switch and two choices---either operate the set only with the remote or to remove the front screen and get at the reset switch (it is tiny) and remove and/or replace it.

If disconnecting the keyboard does not restore the set to operation---the receiver is bad---there are 4 or more caps and some pico fuses that can fail in that unit---Mitsubishi no longer sells or repairs these--if it is bad and not the caps there is a company you can send the unit to and have it repaired--if you need to know their name let me know---

You can call them and get a quote for repairing the receiver.


Let me know what more information you need--I am here to help.

If this told you something you did not know rate this solution as very helpful as I do this here for free.


SD TECH

Posted on Aug 23, 2010

  • john2000 Feb 22, 2011

    Looks like with everything I'm reading I;m in the same boat. 2,2 disconnected front panel still the same. Please send me the info on where to ge the kit, both caps and fuses and the instructions and I will give you only great feedback..

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The blinking light is what's known as the blink code. The blink code tells you what the problem is. To find out what it means, count the number of times the light flashes then Google your make and model with the words blink code added to the end. This will show you links to sites that will tell you what the problem is.

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i have a mitsubishi ws-55859 rear projection tv. the green timer light just keeps flashing and the tv will not turn on.

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Timer light flashes tv won`t turn on. mitsubishi model #55859


You have a bad DM board - the capacitors are bad and need to be replaced. I was able to replace them myself. There are no replacement parts available and many repairmen will charge hundreds of dollars and there is no guarantee they will fix it.

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Greetings,
Chances are very good that this type of problem is a cold solder joint on one of the circuit boards. Unless you know exactly what you are doing don't attempt to fix this type of problem. The circuit boards in rear projections TV can carry enough voltage to kill you even if the set is not plugged in. Contact a repair shop and get an estimate. Then do a repair vs. new flat panel replacement comparison.
Hope this will put the right perspective on your problem.

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This problem very well could be a DM board problem. I have a how to fix file if this is indeed your sets problem. Leave your email and I will send it to you. Good Luck

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