Front LED just Cycles white then goes red. Replaced lamp did not fix set. Found 5 volt power on command missing from Digital bd to DMD bd. Need to replace Digital main bd. Part needed is 6871VSMS28B. Will this fix problem for LG TV Model #62SX4D * TV was working fine, then turned on last week, and had no picure, Best Buy Repair man's notes of description above:

It is helpful to have the sequence of the blinking red light. This may help:

MODELS: WD-52627 / 52628 / 62627 / 62628 / 62827 / 62927 / 73727 / 73827 / 73927

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3. Error Code Operational Check

Note: The TV must be in "Shut Down" and not have been switched Off, to perform the Error Code Operational

Check. When the TV is switched Off, the code automatically resets to "12" No Error.



Pressing the front panel "DEVICE" and "MENU" buttons at the same time, and holding for 5 seconds,

activates the Error Code Mode. The LED flashes denoting a two digit Error Code, or indicating no problem

has occured since the last Initalization.



Note: The front panel buttons must be used, NOT those on the Remote Control.



• The number of flashes indicates the value of the MSD (tens digit) of the Error Code.

• The flashing then pauses for approximately 1/2 second.

• The LED then flashes indicating the value of the LSD (ones digit) of the Error Code.

• 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.



4. Error Codes

The Error Code designations indicating malfunction, or no malfunction, are listed below:

POWER

LED

STATUS

LED

LAMP

LED

Power

Status Condition

Off Yellow Off Low

Power Excess heat. Check Lamp Filter

Off or On Off Yellow No

change

120w usage time over 7000 Hrs.

150W usage time over 3500 Hrs.

Off Off Blinks

Yellow

Low

Power Lamp Cover open

Off Blinks

Yellow Off " Filter Cover Open

Off Off Red Stby Lamp did not turn On

Off Blinks

Red Off Low

Power Fan Stopped

Off Red Off " Circuit failure (short or DVI

connector unplugged)

Abnormal LED Indications

Error Codes "DEVICE" & "MENU"



Error Codes Description



12 No error detected

22 Recovery from Reset

32 Lamp cover is Open

34 Lamp abnormality

35 DM Fan failed (Chassis Fan)

36 Exhaust or Lamp Ballast Fan failed

37 DMD Engine Fan failed

38 Lamp temperature abnormally high. Remove Lamp to check filter.

39 DMD temperature abnormally high

41 Short is detected (Standby Power Supplies)

42 Lamp Fan failed

44 DVI cable between Format and Engine disconnected

46 DMD Temp. Sensor not detected (check DT connector))

47 DM Temperature too high

48 Engine power supply short detected

51 Speaker Drive circuit short detected

52 HDD excess temperature (V30+ & V31 only)

55 HDD Fan Stopped (V30+ & V31 onlyt)

yeppers..the ballast has taken early retirement...can you unplug the ballast output, and see if it's running into a short condition?

If you have a voltage meter there are some things you can check.
Unplug the unit and remove the back cover of the set. Then Plug the unit back in.
You will need to tape down the lamp safety switch in order to do these tests.
Here are all the failures that would give you a lamp error and what to check.
Cause 1. Unit powers on and works properly for a while then shuts off with a red lamp led(lamp error). Suspect bad lamp and replace.
Cause 2. Unit does not power up correctly and you have red lamp led(lamp error). Check the lamp enable line at connector J14 on the back of the light engine. If pin 6 does not switch to 5 volts after turn on, but your 12 and 5 volt supplies are good, then suspect a defective light engine.
Cuse 3. At power on the lamp turns on and off 3 times and then the unit shuts down with a red lamp led(lamp error). You have a defective light engine.
Cause 4. Unit does not turn on correctly and you have a red lamp led(lamp error). Check for 12 volts at connector J9 pin 4 on the light engine. If voltage is missing check for an open fuse F9A09 on the power supply board. If it is open, then you need to replace the fuse and you still have a defective light engine.
Cause 5. Lamp enable line at connector J14 pin 6 on the light engine does go to 5 volts at turn on, but does not drop back to 0 volts after 5 seconds, but your 12 and 5 volts supplies are good then you have a defective light engine.
Cuase 6. Check for 5 volts at connector J9 pins 1 and 2 on the light engine. If low or missing check Capacitors C9A37 and C9A38. Values are 3300MF/10V. Replace capacitors if defective.

This is all I have and I wish you luck.

If the color wheel doesn't spin, the lamp will not fire. The lamp has a gap in it, it will read open. Pull the rear cover off trip the door switch and look close and listen. Double check that the color wheel does not spin up (turn on, then wait 5 secounds or so.. pull the power cord and listen for it to stop.. best method). Also, watch the lamp driver.. there is a condensor coil on there that will lite up when it is sending the ignition pulse to the lamp... do you see it? If so, it's the lamp.

Chances are that the Interlock Safety Switch is not properly set. Remove the Lamp Door and then reinstall the door and tighten the screw. This will reset the Switch. If that does not fix the problem make sure that the Lamp is correctly seated. Beyond that you will need a trained samsung tech troubleshoot the set because it can be a bad Lamp Ballast,DMD bd,Main bd,Color Wheel. Also make sure you have the correct lamp. There is a Lamp Code sticker on the left side of the set. Match the code from the tv to the new lamp you purchased.

After the lights on the front of the tv settle down, push and hold the menu and input (or deivice) buttons for 5 seconds. Now count the number of times the LED blinks and follow these instructions.
Cause #1 1. Self-diagnosis error 4-4, check for proper seating of the DVI cable between the FMT PCB and the DMD (Light Engine). It may be necessary to disconnect and reconnect this cable to insure proper connection. 2. Self-diagnosis error 4-4, check for 3.3 volts DC at connector J-9 pin 8 on the Engine Driver PCB, if missing check F9A06 part # 283P128050 on the Power PCB if this is open suspect the 3.3v regulator circuit on the Power PCB part # 930B921002 3. Self-diagnosis error 4-4, check for 3.3 volts DC at connector J-9 pin 8 on the Engine Driver PCB, if missing check F9A07 part # 283P128050 on the Power PCB, if open suspect it to have been opened by the Light Engine part # 939P977020 4. Self-diagnosis error 4-4, if the 3.3 volt supply at J-9 pin 8 is good and the connection on the DVI cable between the FMT PCB and DMD are secure, suspect the Light Engine part # 939P977020 5. Self-diagnosis error 4-1, suspect the Power PCB part # 930B921002

i have found the lamp will cause sound no picture but if the picture freezes could be dmd bd or digital bd going bad

(Lamp may light and go out) suspect bad lamp part # 915P020010 2. Check for 12-volts DC at J-9 connector pin 4 on the Engine Driver PCB, if missing check for an open F9A09 on the Power PCB, if it is open replace F9A09 part # 283P127060 and the Light Engine part # 939P977020 3. (Lamp may light and go out) Check for 5-volts DC at J-9 connector pin 1 and 2 on the Engine Driver PCB if low or missing check C9A37 and C9A38 both 3300 UFD 10 V part # 181P732040 on the Power PCB (part # 930B921002) 4. At power on the lamp turns on and off three times and then the unit shuts down with a red lamp LED (lamp error). Replace the Light Engine part # 939P977020 5. Lamp enable line at J14 pin 6 does not switch to 5 volts after turn on, 12 and 5 volt supplies are good. Suspect the Light Engine part # 939P977020 6. Lamp enable line at connector J14 pin 6 on the Engine Driver PCB switches to 5 volts after turn on and does go to 0-volts (low) after 5 seconds, 12 and 5 volt supplies are good. Suspect the Lamp Power PCB (ballast) part # 939P978010 7. Lamp enable line at connector J14 pin 6 on the Engine Driver PCB switches to 5 volts after turn on but does not go back to 0-volts (low) after 5 seconds, 12 and 5 volt supplies are good. Suspect the Light Engine part # 939P977020 .

Hi Sally Jo, Unit powers on and works properly for a while then shuts off with a red lamp LED (lamp error). Suspect bad lamp part # 915P020010 2. Lamp enable line at J14 pin 6 does not switch to 5 volts after turn on, 12 and 5 volt supplies are good. Suspect the Light Engine part # 939P977010 3. At power on the lamp turns on and off three times and then the unit shuts down with a red lamp LED (lamp error). Replace the Light Engine part # 939P977010 4. Check for 12-volts DC at J-9 connector pin 4 on the Engine Driver PCB, if missing check for an open F9A09 on the Power PCB, if it is open replace F9A09 part # 283P127060 and the Light Engine part # 939P977010 5. Lamp enable line at connector J14 pin 6 on the Engine Driver PCB switches to 5 volts after turn on but does not go back to 0-volts (low) after 5 seconds, 12 and 5 volt supplies are good. Suspect the Light Engine part # 939P977010 6. Check for 5-volts DC at J-9 connector pin 1 and 2 on the Engine Driver PCB if missing replace the Power PCB part # 934C148001. Hope this helps!

OSRAM VS. PHILLIPS
This is about buying replacement bulbs for the WD62327 TVs.I dont know about the other models but I purchased a PHILLIPS replacement bulb and it worked for about a week and then those dumb flashing lights and no TV. I did some research and others were saying that you had to replace some condensers. Shop would do it for 600 dollars..Well i sent the bulb back and bought an OSRAM replaement bulb. The TV is now working perfect.