Question about LG 62SX4D 62" Television

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I've been told I need a DM module by a tv repair service who checked continuity in many of the components. What do I really need to fix it/ Can I order the parts myself? From whom? Can I install them?

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  • LG Master
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The service manual is available from www.partstore.com
It is part number Part# 3828VD0222B for $2.95
Hopefully the entire DM Module would not need replacing. Hopefully just capacitors in the DM module need replacing and if that is the case part store has these in stock. Their phone number is 866-925-7278

Posted on May 05, 2010

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We lost power the other night. Now I have a continuous green blinking light and it won't turn on. I have tried everything the manual says.


Try Going To The Mitsubishi Web Site. Downloading The Mitsubishi Service Manuals If You Don't Already Have It. It Will recommend The parts You Need To ordering. Circuit board photos are also shown which provide a visual reference during the repair process.

If you decide to have a service technician do the repair, insist that the "DM" module is removed from the TV and ONLY the four 1000uF, 16V Capacitors (Caps) located on the DM Module are replaced. MOST techincians will INSIST on replacing the entire DM Module and not simply the capacitors. The cost is about $200 for a technician to replace the capacitors and $1000 for replacement of the DM Module. As you will read below, doing the repair yourself will cost less than $4.00 for the 4 Caps.

Sep 04, 2011 | Mitsubishi WD-52525 52" Rear Projection...

4 Answers

Mitsybishi WS-65711


i believe i staed ina similiar case that you seem to be having a over heating of the circuit chips on the mother board. are the cooling fans in the set running.

Aug 30, 2008 | Mitsubishi WT-42315 42" TV

1 Answer

Mitsubishi WS-65511 has flashing timer light but will not turn on.


I used to have a WS55909 and had this problem. The light is supposed to blink for one minute while the DM (digital module) boots up after a power loss. If the light continues to blink indefinitely, there is a problem with that board. The DM power supplies are known to have faulty capacitors on these models and will need to be replaced. If I remember correctly, there are (7) 1000uf 25v capacitors and they should be desoldered from the board and replaced with 35v ones. Note that my TV model already had 35v caps but changing them solved the problem: electrolytic capacitors have a much shorter life than other components.
The DM is on the left side and is where ANT-DTV and the IR repeaters plug in. The power supply is the board above the main DM board inside the DM case.
If this sounds too technical for you, get a new TV because a repair guy will charge you more than the TV is worth. In other words you could get a (30-46") LCD TV for the same price.

Oct 21, 2010 | Mitsubishi WS-65511 65" Rear Projection...

1 Answer

Can't get power to TV. The green light continues to blink. I have disconnected all the cables in the back of the TV and unplugged the TV overnight and the green light continues to blink once I put power to...


Hi


Thanks for using FixYa. The green LED on the front panel of the TV that normally blinks when turned on after a power failure or when unplugged: the green light is supposed to flash for about 1 minute while both microprocessors boot up: If it won't stop blinking it means that they aren't communicating with each other. This issue is due to 1000uF/16 volt power supply capacitors in the "DM module" (one of the two onboard microprocessors). These capacitors are apparently small as compared to load they get & due to this they will eventually fail (usually after about 3 years). Or else they fail when there are voltage fluctuations in the circuit above 16 volts. It is recommended to install either 1000uF/25 volt or 1000uF/35 volt capacitors as replacements, so that they will be more than ample to handle any voltage spikes that will occur. To do the repair you’ll need to take the back off the TV apart in order to remove the faulty DM module and need to desolder the old capacitors on DM board and install. Also check the grounding straps which are essential to the proper functioning of the DM module. All this is only recommended to be done by someone who has electrical expertise and know how to solder/re-solder components else contact a qualified repair tech and let them know what the exact issue is with your TV. Please do rate the solution if the issue is resolved or post a comment for further assistance.


Thanks
Rylee

Jun 11, 2010 | Mitsubishi WS-55511 55" Rear Projection...

1 Answer

Green power light keeps blinking


hi friend,
Repairing It Yourself
If you decide to repair the TV yourself, I recommend that you obtain a copy of the repair manual for your Mitsubishi TV from the Techlore website by going to Mitsubishi Service Manual. It will provide some direction, however it is technically written and may be difficult for the NOVICE to understand. If you are unable to locate the the service manual for your specific Model at the above Techlore link, you may need to purchase the service manual online at ServiceManuals.net.
If you decide to have a service technician do the repair, insist that the "DM" module is removed from the TV and ONLY the four 1000uF, 16V Capacitors (Caps) located on the DM Module are replaced. MOST techincians will INSIST on replacing the entire DM Module and not simply the capacitors. The cost is about $200 for a technician to replace the capacitors and $1000 for replacement of the DM Module. As you will read below, doing the repair yourself will cost less than $4.00 for the 4 Caps.
A Few "Cautions"
  1. Keep yourself "grounded" when working with the circuit board. Static electricity will destroy electronic components.
  2. When replacing the Capacitors, press them "down" onto the circuit board as far as they will go, hold them down, solder into place and clip the excess terminal lengths flush with solder. Only by doing this will the metal shield (little silver box) slide down and over the circuit board during re-assembly. There is not a lot of clearance when doing this, as the 105C Capacitors are slightly longer that the originals. With minimal effort everything does fit back together.
  3. Use ONLY 105º C capacitors with a voltage rating of 35 V.
  4. Re-insert the DM circuit board into the Mother board; press virmly and ensure a proper seat of the DM board. Next, slide the metal case down and over the DM circuit board. Refer to my "Lesson Learned."
Basic Troubleshooting
  1. Press the "reset" button and hold for 10 seconds .... Does TV turn on and blinking green light turn to solid green.
  2. Unplug the TV from it's power source for various times, ranging between 5 minutes and 24 hours..... Does blinking green light continue upon plugging in the TV.
  3. Disconnect ALL devices from the TV; DVD, Tuner, Cable Box, unplug the TV for various duration times .... Does blinking green light continues upon plugging in the TV.
  4. Press Power and Menu buttons simultaneously and hold depressed for 20 seconds .... Does blinking green light continue to flash.
  5. Press Power and Display buttons simultaneously and hold depressed for 20 seconds .... Does blinking green light continue to flash.
  6. Insure that no front panel buttons are inadvertently stuck in an "engaged" position.
Diagnosis: If none of the above test resolve the issue, then the failure lies in one of the following:
  1. DM Module Capacitors have FAILED.
  2. DM Module is defective.
  3. EEPROM Board failure
  4. Power Supply failure.
hope this helps u
please rate me.....................
thank u for using fixya
regards
sivaranjini

Nov 24, 2009 | Insignia IS-LCDTV32 32 in. Television

1 Answer

Tv will not turn on, the timmer light keeps flashing, mitsubishi diamond


These are famous for bad capacitors in the DM module. The DM module is basically the system control or brain box for the set. This can be a tricky repair. You should really have a shop check it for you. Thanks for using fixya.

Nov 11, 2009 | Televison & Video

1 Answer

Mitsubishi TV WD-52528 green flashing light


IF the lamp has already been tried here with a known good one....then...

Most like the "DM module" needs to be replaced. This is NOT a cheap repair and Mits KNOWS these sets are a problem. There is SOME possibility that the DM module, and possibly the formatter module too--could be repaired, about a 60% chance or so, by a decent tech...IF there is one in your area that will work on these sets. If you can get someone to check it out. ....have them chack for "bad capacitors" on ALL THREE of these modules::

The DM module.
The "formatter" module
The power supply.

Often--about 10 new caps on these three modules WILL fix the set. But it is a VERY time-consuming affair, as the modules are in a BUNCH of shields and such, so...figure on 3 hours of work, perhaps the tech removing the modules--or TV--from your house, and repairing the modules, and returning. A fair price to do this.... (if you don't have a service plan...if you do...someone SHOULD be willing to come out from warranty service and do this...) IF the modules can be re-capped--would be about 450-500, depending on the trip distance and such.

if the modules cannot be repaired /about 1in 3 times...and you have a warranty..and mits cannot supply new ones...you might just get a new set. This happened a NUMBER Of times last year, where I was at.

Oct 14, 2009 | Televison & Video

1 Answer

Green light flashes continuously and you cant turn TV on.


Got nothing but bad news for you. The Digital Module is not booting up. A common problem for that unit. The only proper way to fix it is to have a reputable tv shop pull the entire chassis and ship it back to Mitsubishi for rebuild. It is a very costly repair. Usually in the neighborhood of $700 to $800.

Jun 09, 2009 | Mitsubishi Televison & Video

2 Answers

The power light on the front of the tv has been blinking for 20 HRS now...have reset tv, plugged and unplugged and still will not come on. It is on a surge protector. Has done this before but never for...


If you unplug that unit and plug it back in the LED will blink for around 70 to 90 seconds. That is how long it takes for the DM module to boot up. When the blinking continues past that time it is because the DM module is not booting up and responding to the main micro. The fix is to replace four capacitors in the DM module. It will take a reputable tv shop to know how to do this repair. I have done many and this is a common problem with this model.

May 18, 2009 | Mitsubishi WS-55511 55" Rear Projection...

1 Answer

Mitsubishi WS 55809 Rear projection TV


http://www.chrisandnat.com/Projects/BlinkingTV/blink.htm
http://www.jeremyburns.com/Mitsubishi-Green-Blinking-Light-Fix.pdf
http://www.fixya.com/howto/h159332-mitsubishi_dm_board_repair
http://hdtvoice.com/voice/showthread.php?t=32186
replace DM

Picture of bad caps
http://www.auctioncreations.com/wd62525a.JPG

The DM board is the one with the digital connectors on the back panel. If you already have it appart, you may as well check the caps on all of the boards. The caps that go bad are typically Jamicon brand caps in 1000 uF and 330 uF values. There are also a couple of 3300 uF caps in the PS that cause problems.

Jan 16, 2008 | Mitsubishi WS-55513 55" Rear Projection...

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