DM Module How can I remove the wires from the DM Module w/o removing the unit first?

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.

Fuel Pump - Multi-Port Fuel Injection models REMOVAL & INSTALLATION 1984-95 Models Fig. 1: Loosen the hose clamps and tag the fuel hoses before disconnecting them . . .
Fig. 2: . . . then detach the hoses from the fuel pump module/sending unit
Fig. 3: Disengage the fuel pump module/sending unit wiring harness connector

1. Disconnect the negative battery cable.
2. Remove the fuel tank filler cap.
3. Relieve the fuel system pressure as outlined in this section.
4. Drain the fuel from the fuel tank.
5. Raise and support the rear end on jackstands.
6. Remove the fuel inlet and outlet hoses from the sending unit. Be ready to catch any spilled fuel.
7. Disengage the sending unit wires. Fig. 4: The fuel pump module/sending unit retaining ring must be rotated counterclockwise for removal
   
   
8. Using a brass punch and hammer, remove the sending unit retaining lockring by tapping it counterclockwise. Fig. 5: Carefully pull the fuel pump module/sending unit out of the fuel tank - step shown with the fuel tank mounted on the vehicle
   Fig. 6: Remove and discard the fuel pump module O-ring gasket
   
   
9. Remove the sending unit, which incorporates the electric fuel pump, along with the O-ring seal from the fuel tank. Discard the O-ring.
10. Remove and discard the pump inlet filter.
11. Disengage the fuel pump terminal wires.
12. Remove the pump outlet hose and clamp.
13. Unfasten the pump top mounting bracket nut and remove the pump. To install:
    
14. Install a new inlet filter on the pump. Fig. 7: This is the proper positioning of the fuel pump module assembly inside the fuel tank
    
    
15. Assemble the pump and bracket. Connect the hose and wiring.
16. Install the unit and new O-ring in the tank. The rubber stopper on the end of the fuel return tube must be inserted into the cup in the fuel tank reservoir.
17. Install the lockring. Carefully tap it into place until it seats against the stop on the tank.
18. Connect the hoses.
19. Engage the wiring.
20. Lower the vehicle, fill the tank, run the engine and check for leaks.

1996-98 Models Fig. 8: Fuel pump module location - 1996 model shown

1. Drain and remove the fuel tank as outlined in this section.
2. Using tool 6856 or its equivalent, remove the module locknut which is threaded onto the fuel tank. The module will spring up when the nut is removed.
3. Remove the module. To install:
   
4. Install a new gasket and place the module into the opening in the fuel tank.
5. Position a new locknut on top of the module and tighten the nut using tool 6856 or its equivalent to 40 ft. lbs. (54 Nm).
6. Install the fuel tank as outlined in this section. Fig. 9: Locknut removal using tool 6856 or its equivalent
   Fig. 10: Install a new gasket on the fuel tank opening
   

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.

DM is no longer available from Mitsubishi.

Unit can be removed and sent our for repair----


PTS ELECTRONICS---you will find them on the web and you can call or email for a quote.

Usually there are some caps and or fuses that fail in the DM unit.

Did you try to disconnect front keyboard to make sure it is not the problem?

If this told you something you did not know rate this solution as very helpful as I do this for free.

SD TECH

If the tv has the continuous flashing led, you have a DM board problem. It is likely bad capacitors in the DM module.. there are 4 of them 1000uf caps that will go bad. They will get a bulging top on them when they go bad. . Mits recommends replacing them with 680uf caps with a comprable or higher voltage rating. The DM module in on the left side of the set (viewed from the back) and is somewhat difficult to remove.

Hello Getoxygen,

This sounds like a DM problem. To repair this you will have to replace 4 or 7 capacitors (1000uf 35v).
Here are the instructions. Depending on your set this may differ a bit, but the central theme is getting the DM free to be worked on.

This was taken from a TV repair site used by TV technicians.

STEP 1) The DM Module loose. But itcan't be rotate out because of the upper plastic guide.


STEP2) How the DM Module is rotated out of the TV case. Allow thewires
entering the DM Module to be an axis point of the rotation.That way they barely move and don't get snagged or stretched.


STEP3) The DM Module out and the side cover of the metal housing removed.


STEP 4) My setup to do the soldering work.


STEP5) Up Close of the daughter board and the seven capacitors on
MitsWS-55859.


STEP 6) The daughter board unscrewed and flippedover where you will be soldering.


STEP 7) The UpperPlastic Guide that must be removed to rotate the DM Module out of theTV set.


STEP 8) Get this wooden horizontal shelf out (4screws) and getting the upper plastic guide out becomes easy.


STEP9) Helpful Hint about the wooden shelf and the platic guide that bothneed to be removed.


I hope this helps
Thank you,

Hi,
Check this link for guidance with pictures about DM board removal.
Thank you.

p1402 - dm-tl air pump motor is shorted or disconnected.

2000 model year accent is equipped with a new enhanced evaporative emission system. this new system is capable of measuring leaks as small as 0.020" diameter. the new system pressurizesthe evaporative emission system with a diagnostic module for tank leakage (dm-tl), while the previous model's system appliedengine vacuum through the purge valve to detect system leaks.

service information
vehicles that have the check engine light illuminated and have dtc p1401, p1402 and p1403 stored in the ecm should have their electrical systems diagnosed related to the appropriate dtc. these codes are not related in any way to an evaporative emission system leak. the conditions that set the diagnostic codes areas follows:
p1401 - dm-tl air pump motor current draw is higher or lower than expected (normal = 17-36 ma).
p1402 - dm-tl air pump motor is shorted or disconnected.
p1403 - dm-tl changeover valve is shorted or disconnected
perform the suggested repair
1. inspect for water in the dmtl by removing the 90° air inlet elbow and looking into the air chamber. if water or corrosion is present, replace the dm-tl p/n 31440-25500; air filterp/n 31453-25500; and pipe assembly p/n 31454-25500if corrosion is in the pipe. see detailed instructions on page3 for air filter replacement.
2. inspect for underbody coating sprayed into connector m52 at dm-tl. if underbody coating is present on the male or female connector, spray with electrical contact cleaner to remove the undercoating.

air filter (dm-tl) replacement instructions

1. disconnect the 90° elbow from the top of the dmtl and insert a clean rag into either the elbow or thedmtl inlet connector.
2. disconnect the dmtl electrical connector.
   
1. disconnect the 2 hoses at the front of the canister (caution: silicone hoses tear/puncture easily).
   
2. remove canister assembly and dm-tl as a unit (3 mounting nuts).
   
3. disconnect the 2 hoses from the metal transfer pipes.
   
4. remove the canister, air filter, and metal tube assembly from the canister protector by removing the 3 mounting nuts.
   
5. disconnect the hose at the air filter.
   
6. remove the air filter mounting nut and remove the air filter.
   
7. install a new air filter.
   
8. reassemble in reverse order.
   
   

The WD62825 has a Digital Module located on the left side of the chassis looking at it from the rear of the set. It's housed in a metal box that can slide out of its holder after removing the trim screws.
The module has its own power supply board and there are a group of 16v/1000uf caps on that board which commonly fail causing the constant flashing standby light. Further back on the module is a small board about the size of a matchbook called the E2P module. Its SMT (Surface Mount Technology) caps also commonly fail which can cause the same symptoms. Techs can tell whether the E2P has failed by simply removing it, hooking the DM back up and trying to power the set. If it powers on the picture won't be much good - but at least you can tell what's keeping it down...
Back to the caps on the pwr board. If they've failed they usually will buldge visibly on top. And ESR is almost not necessary. In any event that's the nuts and bolts on this model.
Is it a job for a layman? Yes and no - you might strongly consider a tech if you don't feel comfortable removing all the connections that the DM has with the signal board. There are about six - multi-pin - wired connections to unplug and then sliding the DM out of the unit and carefully removing the screws and latching to take the DM top cover off...
Hope this helps.
Bill