Question about Mitsubishi WS-55859 55" Rear Projection Television
THIS IS MY STANDARD ANSWER TO THIS QUESTION==SOMETIMES PEOPLE DO NOT
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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.
Posted on Oct 30, 2009
There are capacitors that fail in the dm module and will have to be replaced to get the set to work again
if you have the tools soldering station and abilaity you can repair it your self if not you may want to enlist some local help with it
cost depending on area 325 to 385 for the repair
Posted on Oct 30, 2009
Hi my name Eng Sin . I have problem with my tv WS-55859 . one of capacitor i got a reading start 34k then moved up until no reading detected . Please respond back if this is something to bad to worry about or is it nothing?.
Flashing green light and tv will not turn on with .
Posted on Dec 19, 2009
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Posted on Jan 02, 2017
The capacitors on the dm board are probably bad. I called mitsubishi and they agreed to pay for the part even though my tv is four years old. MITSUBISHI cust # is 1-800-332-2119
Posted on Jan 24, 2008
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