Mitubishi WD 62725 - Ballast Problem??

Caveat: I am not a tech, I just read through the Mitsubishi service manual, and have worked on different model TV that I have owned (older model of this one) I am a little unclear on the second set of lights but I think the combination *may* indicate that the lamp fan is not starting (there are two fans though), if the blinking red is the status light. It is possible the connector for that got jostled during the trip, something fell into it from being on the side (wire or loose something) and is blocking it from spinning now, or a module unseated a bit,and is loose, or the lamp is no longer seated correctly (though the lamp light does not appear to be on) or none of these. :) These are just guesses.
Be careful if you open it up, due to potential for shock. Wear gloves, and power it down first (then unplug). Reseat any fan connectors.

Google: I used "wd-65735 status lights" to find a service pdf , it's for V39 chassis (several models)

From page 24 of Service Manual :

3. Error Code Operational Check Note: The TV must be in "Shut Down" and not have been switched Off, to perform the Error Code Opera- tional Check. When the TV is switched Off, the code automatically resets to "12" No Error.
Pressing the front panel "INPUT" and "MENU" buttons at the same time, and holding for 5 seconds, activates the Error Code Mode. The "TIMER LED" flashes denoting a two digit Error Code, or indicating no problem has occurred since the last Initialization.
Note: The front panel buttons must be used, NOT those on the Remote Control.

• ThenumberofflashesindicatesthevalueoftheMSD(tensdigit)oftheErrorCode.
• Theflashingthenpausesforapproximately1/2second.
• TheLEDthenflashesindicatingthevalueoftheLSD(onesdigit)oftheErrorCode.
• The Error Code is repeated a total of 5 times. Example: If the Error Code is "23", the LED will flash two times, pause, and then flash three times.

Page 24
MODELS: WD-60735 / WD-60C8 / WD-65735 / WD-65736 / WD-65835 / WD-65C8 / WD-73735 / WD-73736 / WD-73835 / WD-73C8
4. Error Codes
The Error Code designations indicating malfunction, or no malfunction, are listed below:
ERROR CODES
Code
Description
Most Likely Cause
12
No Error found
17
Communication loss, TV Micro - Engine (3.3V-ENG-SDA & SCL)
Engine Failure
18
Engine will not accept data (ASIC-READY signal from Engine is not detected).
Loss of 12V from PWB-POWER (Loose PE or PE2 connector); Bad Color Wheel (Loose J6 or J7 connector); Engine Failure
32
Lamp cover is open.
Lamp Cover Switch; Loose CD connector
34
Lamp turns Off while the TV is playing. Lamp failure
(Lamp Enable signal from engine is lost)
Lamp Cartridge Failure
36
Exhaust Fan failed.
Loose J4 connector
37
Engine (DMD) fan failed.
Loose J5 connector
38
Lamp temperature abnormally high.
Poor Air Circulation; Loose J3 connector
39
DMD temperature abnormally high.
Poor Air Circulation
41
Standby Supply Short is detected. (5VS or 3.3VS)
PWB-MAIN Failure
42
Sirocco fan failed (Lamp fan).
Loose J8 connector
44
Check for disconnected DVI cable between PWB-DM and Engine. (Engine pulls DVI pin 14 Low)
DVI Cable unplugged
48
PON-SHORT 3.3V switched supply short
PWB-MAIN Failure
57
Ballast communication problem (ballast to chassis)
Loss of 340V from PWB-POWER (PL or CJ1 connector); Loose FB or CJ3 connector; Ballast Failure
61
No LAMP-EN output from the engine to the ballast
Bad Color Wheel (Loose J6 or J7 connector); Engine Failure
66
Lamp did not turn on at P-ON sequence
(No Lamp inserted)
(Disconnected cable between ballast and lamp) (Lamp-Enable goes to DM but not to Ballast)
Loose CJ4 connector;
No Lamp Inserted;
HV connection or lead wire to lamp; Lamp Cartridge Failure
Code 34(1) - Lamp Enable is generated to activate the Lamp
Code 57(2) - Lamp Enable is generated during P-ON sequence, but no Lamplit signal is received from the Ballast. Code61(3) -NoLampEnableisreceivedattheDMandBallast.
Code 66 (4) - Lamp enable is received at the DM but not at the Ballast.
4. Error Code Log
The Error Code Log - may be helpful to retrieve the code for an error the occurred in the past. To access the Error Code Log: Press <MENU> <3-5-6-4>

Hi there,

This model as 3 LED indicator lights:

1) Power/Timer 2) Status 3) Lamp


If "STATUS" LED is blinking RED:

1) Internal Fan has stopped. These tv's require fans, to prevent overheating and causing damage.

If "STATUS" LED is solid RED:


1) Circuit failure (short)
2) Disconnected DVI cable, chassis to engine
3) No LAMP-EN signal from Engine to turn the lamp On.
4) Ballast UART communication problem.

If "LAMP" LED is solid RED:

1) Lamp Failure - Lamp failed to turn On.
2) Lamp is broken (e.g. burst or blown)
3) Lamp turns Off during P-ON

There is no data relating to TIMER LED being solid RED.

Hope this helps.

Cheers,

Scott

Hi, have you replaced the lamp after 2-3 yrs of usage? The lamps used by mitsubishi tend to last around 4000 hrs 1-3 yrs.It is common for the green light to light up.Other common failures are the ballast which is the board that powers the lamp.Also check if its not overheatin, dust out the fans.Heres where u can get the lamp or ballast http://www.discount-merchant.com/SearchResults.asp?Search=wd-52631

I just repaired two Mit WD-62725 sets in the last two weeks.
The first one had bad caps on the power board and the FMT board. The scond one had bad caps on four out of the five boards.
Also, on the FMT board, there was a blown surface-mount fuse.
I advise checking all of the boards for bad caps. If you fine a bad 1000uf cap, replace all of the 1000uf's on the board.
Hop this helps,
Dan

Hi I am Vortash it sounds as if the actual fault is in your ballast circuit this is the circuit that fires up the arc on the lamp and sends the signal to the main board that the lamp is running , if this is faulty no signal is received by the board and the lamp light comes on when this happens there is usually still sound but not always as sometimes the problem affects the power supply also .. this is a job for a trained engineer as voltages at the ballast are sometimes in excess of 25000 volts at first arc that then settles to a lower voltage to run ... regards Vortash

you have either a defcetive signal pwb, FMT pwb or light engine. Does the menus appear clear when you press menu?

Press and hold the "Device" and "Menu" for 5 seconds and see what code comes up....... 12 No error detected
22 Recovery from momentary Reset
32 Lamp Cover open
33 Air Filter Cover open
34 Lamp abnormality
35 Chassis Fan failure
36 Exhaust (Back Cover) or Lamp Ballast Fan failure
37 Engine (DMD or Lamp) Fan failure
38 Excess Lamp Temperature
39 Excess DMD Temperature
41 Short Detected
44 DVI Cable (between Chassis and Engine) disconnected

You have to take the TV apart. Pull the electrical chassis out and look for bad electrolytic caps on the boards. The red LED probably means the 2 - 3300UF caps on the power supply board are bad. You can tell if they are bad by the fact that their tops are puffed up and they may or may not be leaking brown fluid. Compare them against the other caps on the boards and you will see how they have flat tops.

BUT before you take the TV apart you can check the error codes by pushing "menu" and "Device" at the same time and holding for about 10 seconds. The status light will blink two numbers. ex. one flash pause two flashes is 12 Error Code Probable Cause

12 No error detected
22 Recovery from momentary Reset
32 Lamp Cover open
33 Air Filter Cover open
34 Lamp abnormality
35 Chassis Fan failure
36 Exhaust (Back Cover) or Lamp Ballast Fan failure
37 Engine (DMD or Lamp) Fan failure
38 Excess Lamp Temperature
39 Excess DMD Temperature
41 Short Detected
44 DVI Cable (between Chassis and Engine) disconnected


or use this table -



You can buy replacement caps from Mouser electronics online. There are plenty of solutions detailing how to do this already posted.

41 is a fan error.

The colorwheel is your problem. To confirm this, unplug the tv, then listen thru the air vents in the back as you plug the tv in. You will probably hear a ticking sound. If you do, that is the colrwheel. If the colrwheel is working, youwill be able to hear it "spin up". It will be a sudden high pitch whine. Let me know if I can be of further assistance