Question about Televison & Video
Green light should blink if set unplugged for 70 seconds and go out:
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 s 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 Nov 03, 2012
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Posted on Jan 02, 2017
Just my coment THis tv has a complex system that include a digital signal porcessing in a high levle technology to show a good performance, i myself work on the development of that model, we was thinking we are best, for improve that many eng. dedicates almost all life to have that technology in our rooms, I offer my apologize for that but many eng dedicates all year 18 hours a day to fix that, thanks
Posted on May 13, 2007
Thats a common problem when the caps on the DM need replacement. They will function fine untill power is interupted then the set will not complete the boot sequence when power is reapplied and the led will just continue to blink. Hers a link to the kit that will usually repair that issue the kit comes with instructions.
Posted on May 09, 2009
You won't like it but I can guarantee that the set is not booting up the digital module. Some shops will take on trying to rebuild it but it won't work, at least not for long. The only true fix is to ship the entire chassis back to Mitsubishi for rebuild. Removing it is a major piece of work and the total cost ends up being around $700 to $850. I have been fighting these units for more than five years now and I have nothing to gain by lying to you. SORRY!
Posted on Jun 11, 2009
You will need to cahnge the capacitors on the DM board, very common problem. The V21 V19 DM repair kit at the following link contains the replacement capacitors and detailed instructions. Its listed under the repair kits catagory at the following link.
Posted on Aug 29, 2009
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