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Ballast UART Error

I have an optoma EP771 that powers up, shows image and then shuts off. It then blinks the error code for Ballast UART error. The power supply seems good. Not sure if this is a ballast or main board issue. What should I look for? Should I try to order the ballast. Nobody seems to know what this error actually means.

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  • Nathaniel Campbell Jan 09, 2009

    I also purchased an Optoma EP771 and it turns on and shows image. After approx 1 minute, the lamp shuts down and the blinking error for Ballast UART flashes.

  • Ryan Heyworth
    Ryan Heyworth Dec 18, 2013

    I've changed my bulb and still get the same error? What does the 'ballast' refer to?

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Same thing happened to me. After one minute of running, lamp shuts off and 5 power led blinks and 3 ready led blinks, indicate UART ballast error. Well, I purchased a new lamp, and installed it, and the problem was gone. I looked closely at my old lamp, and it showed a little blister inside, and a tiny spot of white residue, perhaps it was the whole problem there, although I don

Posted on Oct 03, 2010

  • Ryan Heyworth
    Ryan Heyworth Dec 18, 2013

    I've changed my bulb and still get the same error? What does the 'ballast' refer to?

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My 73" mitsubishi dlp WD-73827 turns off and has a red status light blinking. I have replaced the bulb and the heat sensor... any answer to what else could be the problem?


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

Page 43

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)

Jul 18, 2014 | Mitsubishi WD Projection Televisions

1 Answer

I am getting 5 blinking red lights before going solid red; already replaced the projection lamp approx. 1yr. ago My Sony 50" KF 50WE610 model is about 7 yrs. old. Please give me some guidance


Hi dalposadas,

5 blinks of the standby led lights is an error code for no high voltage coming from the ballast board.
You have to check first if the supply voltage from the power supply is present feeding the ballast board. If yes, you have to replaced the ballast board. High chance that the fault came from it but you need to confirm it by the presence of the voltage from the power supply.

Hope I helped you.
Have a nice day!
Thanks for using Fixya.

Jul 27, 2011 | Sony Grand WEGA KF50WE610 50" Rear...

1 Answer

Problem concerns Samsung HL-S5087W. All of a sudden, TV goes through 3 startup cycles and shuts down resulting in 3 blinking lights on front panel. What I've done: Completely cleaned inside of...


Hi,

3 blinking led light at the front panel is an error code for lamp malfunction. If you've already replaced the bulb and yet the symptoms remain the same, then high chance that the fault came from the ballast board because the supply voltage is present.

Confirm if the bulb will lit upon powering on the unit. Open the lamp cover, bypass the lamp cover switch by putting tape to make it in closed position (making it still the lamp cover is attached to the housing) and then power on the unit. Check if the bulb will ignite or will light up, if not, you have to replaced the ballast board.

Hope I helped you.
Have a nice day!
Thanks for using Fixya.

Jul 14, 2011 | Samsung HL-R5087W 50" HDTV-Ready...

1 Answer

Lamp light is blinking as well as the red standby temperature code, tried replacing bulb, still getting lamp blinking light


If the bulb did not fix it then it is probably the ballast that has gone out or the power supply board has failed. I usually replaced the ballast and power supply together. You can call 1-800-samsung or search online for the parts.

Jul 13, 2011 | Samsung Projection Televisions

1 Answer

New lamp and still blinking lamp light.fan running fast and pulsing turns on and off and temp light blinks when using remote no light from lamp


MIne did the same thing, thought it was the lamp, bought a new one....still did it, figured it wasn't the ballast because the light came on for about 3-5 seconds - was told the ballast was bad, the ballast supplies high power to the lamp - if it is weak, it will not supply enough power and lamp shuts down. Bought a new ballast on Amazon for $62.00 - problem solved. I also tried a cooling fan - NOT the problem, was the ballast

Feb 16, 2011 | Samsung HL-R6167W 61" HDTV

1 Answer

Red light blinks 5 times


Hello.
5 blinks mean that lamp-ballast duo have a problem. Ballast (power supply for lamp) could go bad if you abuse it with older lamp by not replacing lamp when image become darker.
You have to replace lamp first. If problem would not go away - then next step is to check and replace ballast. It have to be done by skillful technician who suppose to check +5V trigger voltage supplied to the ballast before making decision to replace it.
Good luck!
Russ.

Apr 04, 2010 | Sony Grand WEGA KDF-42WE655 42" Rear...

2 Answers

Red light 5 blinks


your set needs attention by the authorised service - probably the Vertical scan, horizontal scan or the flyback transformer driver circuits have failed.

Jul 12, 2009 | Sony KDS-R50XBR1 50" HDTV

1 Answer

Blue light in the front blinking no picutre no sound


This is the shutdown code for the lamp ballast. I would have a technician verify ballast is bad and replace. This can be a tricky repair for a novice because installation of the ballast requires that you remove the light engine. Hope this helps.

Mar 28, 2008 | JVC HD-52G886 52" Rear Projection HDTV

1 Answer

No picture


My too, same problem - tried replacing lamp ($150), no luck, replaced ballast ($200) no luck, replaced power supply ($150) no luck and TSC is telling me to replace the main engine ($600) - way too much for this piece of junk (cost me $4000 in 2005) - don't buy optoma products!!!

Nov 11, 2007 | Optoma RD65 65" Rear Projection HDTV

3 Answers

Tv keeps turning off?


cutta, you will most often hear a click on boot then the fans start up and lamp will then fire. The picture will start to show up....at what point does it shut off? and do you hear a click when the tv is turning off? Is it the complete tv shutting down, fans and everything that turns off? Do you see any lights on the the front panel "POWER", "STATUS" or "LAMP", what are they doing? If you see a Power, Status or Lamp light after it shuts off the below are what they mean if there is an issue. POWER - STATUS - LAMP - CONDITION/ISSUE: Off - Yellow - Off - Temp. high/dirty filter/excess room temp Off - Off - Yellow - 4000 hrs. Lamp usage warning Off - Off - Blink Yellow - Lamp Cover open Off - Blink Yellow - Off - Air Filter Cover open Off - Off - Red - Lamp failure (failed to turn On or broken) Off - Blink Red - Off - Fan Has Stopped Off - Red - Off - Circuit failure (short) or DVI cable disconnected If you want to check for the last "Error Code", after you first turn the TV on, by pressing the front panel ?DEVICE? and ?MENU? buttons at the same time and holding them for 5 seconds, it activates the Error Code Mode. The ?Power LED Light? blinks/flashes (1/2 sec delay) and then flashes again denoting a two digit Error Code indicating no problem or an error has occured since the last Initalization. i.e. "Power light" blinks 3 times (1/2 second delay) and then blinks 4 times then 1 sec delay and repeats a few times. This would mean "Error 34 - Lamp abnormality". See below for error codes..... Error Code - Description or issue 12 - No Error detected, check Power Supply 32 - Lamp Cover is open 33 - Air Filter Cover is open 34 - Lamp abnormality 36 - Light Engine (DMD or LAMP Fan stopped) 37 - Exhaust or Lamp Ballast Fan stopped 38 - Lamp temperature high 39 - DMD temperature high 41 - Short is detected 44 - DVI cable between FMT & Engine disconnected. Sorry for the long answer but it was an open ended question.

Jul 11, 2007 | Mitsubishi WD-52525 52" Rear Projection...

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