Question about Mitsubishi WS-55859 55" Rear Projection Television

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I removed front panel on my WS-55859 Mitsubishi and unplugged the 2 wiring harness's.Tried turning on with remote.No luck.Help.

Posted by Anonymous on

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I expect you will find a safety interlock is enabled with the front removed.

Posted on Dec 28, 2010

  • bigplay420 Apr 13, 2011

    My t.v. repair man laughed at this model having a safety interlock.My t.v. did work,now does not after changing the screen (different model same size).I do not know where to go but to go fetch my old cracked screen again to make it work?He said that would not work and that my motherboard must have happen to go out at the same time.Am I getting screwed over somehow..?It seems I just payed 260 bucks to make my t.v. NOT work.

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Dear SD Tech, My WS-55859 suddenly stopped turning on, either from the remote or the front panel switch. It would click the relay and turn on the front panel light for a couple of seconds and then turn...


I have the address. 2,2 is short protection. 98% chance one of the two pico fuses pictured is blown.

Model indicated uses a single convergence chip; it and the fuses are on the middle board.

See attached photos of fuses (circled ones are suspects) and another of the chip.

A very helpful rating will result in instructions sent.

SD TECH


f5d2a90.jpg
note the fuses marked





513d13e.jpg

Oct 07, 2010 | Mitsubishi WS-55859 55" Rear Projection...

1 Answer

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


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

Aug 23, 2010 | Mitsubishi WS-55859 55" Rear Projection...

1 Answer

Timer light will not stop flashing and tv will not turn on - model WS-55859.


THIS IS MY STANDARD ANSWER TO THIS QUESTION==SOMETIMES PEOPLE DO NOT TRY THE EASY POSSIBLE REASON--IF YOU HAVE ANY QUESTIONS LET ME KNOW---IF THE ANSWER TOLD YOU something you did not know--rate the solution----

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.


SD TECH

Nov 24, 2009 | Mitsubishi WS-55859 55" Rear Projection...

1 Answer

My mitsubishi TV ws-55859 does not turn on. The green timer light comes on and goes off after 3-4 seconds but tv does not turn on. What could be the problem? Help please......


Poor solder connection and Bad STK ICs 2 of them replace Both Big Black IC will have part number on them Call Mats for STK 1-800-628-1118 example
STK392-570.

Nov 18, 2009 | Mitsubishi WS-55859 55" Rear Projection...

1 Answer

Green timer light on front panel continuously flashes quickly and the tv will not turn on. have tried the system reset and unplugging the set. Green light continues to flash


ONLY 1 or 2 things can cause this problem----First thing to do is remove front speaker grill--it pulls out and secured with plastic pegs--behind it you will find an inspection plate---Notice the one or two pairs of wires coming from the front keyboard2.gif 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(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.

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.

SD Tech

Sep 26, 2009 | Mitsubishi WS-55859 55" Rear Projection...

1 Answer

My Mitsubishi WS-65511 won't turn on.


I have had my WS-65511 fail like this, first at 4 years, second 2 weeks later, then 3rd time yesterday (4/14/2009). In past, the tech replaced a thermal sensor p/n 299P313010A (but Mitsubishi says that part is not for WS-65511 and that it does not have a thermal sensor - go figure). It is a white rectangle with about 30 pins in 2 rows and is soldered onto a board in the TV. List price is about $25. Might be your problem.

Feb 22, 2009 | Mitsubishi WS-65511 65" Rear Projection...

1 Answer

Mitsubishi 55859 Blinking Green Light


Video instructions for repairing Mitsubishi WS-55859 HDTV:

http://www.jeremyburns.com/Mitsubishi-Green-Blinking-Light-Fix.pdf

You can find the parts (capacators) at Radio Shack for appx. $2/each.

Dec 27, 2008 | Mitsubishi WS-55809 55" Rear Projection...

3 Answers

Mitsubishi WS-55511 Problem TV out - Getting only continously blinking green light on the front-panel


I had the same problem with the blinking light on the front of the TV and it would not power up. I read all the problems everyone was having and thought I was going to face a huge repair bill. The service guy came out, pulled off the front panel where the speakers are and disconnected the circuit for the front display panel. 3 1/2 minutes in my house, $90 service call. Apparently, when you give the TV too many commands at once, it's safety feature is to"shut down and lock up". He mentioned also that sometimes when these sets get to be about 4-5 years old, the wires in front can "leak" causing a shortage and then locking up the TV. I keep the circuit unplugged and operate the TV solely by the remote. Give it a try, what can it hurt!! Hope this helps.

Oct 05, 2008 | Mitsubishi WS-55511 55" Rear Projection...

1 Answer

Tv mitsubishi ws55311


Remove front lower speaker grill,then remove access panel =
unplug white connector ( goes to front controls )......Does the set
work now with remote ?...= bad tactil switch on front panel......T.

Apr 23, 2008 | Mitsubishi WS-55513 55" Rear Projection...

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