Capacitors on DM Module

This is a V19 chassis, circa 2002

If all capacitors were replaced correctly & all caps with bulging tops were replaced, It sounds like you may have other issues on the DM pcb. Possibly defective ICs. That would be the E2P module (a small pcb which plugs directly onto the DM pcb), which is specific to your particular model & serial#

Several years ago the only way to get the E2P, was thru the manufacturer, they also, used to make a kit that you could replace those ICs yourself. Those pcbs & kits were limited. So all I can do is wish you much luck if that is the problem.


At this point I would double & triple check the replacement of your capacitors.

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.

Hi,
You need pictorial to locate dm module in tv and to replace bad capacitors.
This Link will help you to locate dm module in tv and info about what are requirements to replace bad capacitors in dm board.
Hope this will help you.
Thanks.

Power supply board Look for vented or puffed up on top capacitors 1000uf16v.330uf 10v, 470uf 16v.

Also what is the model number printed on back of TV?

Hi,
DM module is not booting up because there are some capacitors in its power supply that are defective in your tv .There are four capacitors that go bad inside your tv in DM module . You need to replace those 4 capacitors . It will cost you around $40 . If you're not a tech, and you'll most likely need to call technician to repair your tv . Hope this helps .

call Mitsubishi, 18003322119. They seem to know this is a ubiquitous problem with these sets, and seem willing to cover parts (all new electrical chasis), but not labor. Have to have an authorized repair tech look, verify problem, fax info to Mitsubishi, then will send in chassis for rebuilt one. Cost from what I've seen runs $300-400 in labor. Stinks you have to pay any, since Mitsubishi used bad capacitors in making the T.V. in the first place.

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.

It's definitely the one causing the problem but I suggest you also replace or resolder the 4 capacitors on the DM board to make the job at once. Just make a note on the polarity markings of the capacitors and the board. If there's no indicated polarity markings on the board then nevermind. Here's what you need to do the job:

1. Soldering iron
2. Desoldering pump
3. Soldering lead

Steps:

1. Heat up the soldering iron
2. Melt the lead on the board with the soldering iron and use the desoldering pump to remove it and loosen the terminals of the capacitor.
   
3. Remove and replace the capacitors one at a time to avoid confusion.
4. Make sure to make a good solder. A good solder is volcano-shaped.
   
5. Cut any excess lead terminals.
   
6. Make sure there's no stray leads that might cause short circuit on the board.
7. Check the terminals of the newly installed capacitors for any short circuit.

Tip:
The board experiences vibrations during the operation of the unit. These vibrations can result to broken solders as the time passes by. Before re-installing the board, check it for any loose or broken solders and resolder as a preventive measure. A magnifier will surely help.

Call a good TV Tech and tell him to replace the Capacitors in the DM Module. There are some 2200uf and some 1000uf at 16 volt capacitors that should be upgraded to 25 volts instead of the original 16 volts. This is a common problem for the V21 Mitsubishi Chassis.

You have four capacitors bad on the "DM" module in the unit. I recommend you get a tech to do this repair. This is due to the complexity of accessing the DM module. A qualified tech can do this repair in under an hour. You can find a tech in your area by inputting your zip code on the home page of this website. Let me know if I can be of further assistance