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.
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
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By what you have told me, the lamp possibly may have blown, so check if the product is still under warranty as you may be able to claim another lamp at no cost what-so-ever!
It is however a definite code to tell you something is wrong!
Hope this helps ;)
Environment Over Temperature- 1 long blink / 1 short blink
DMD Over Temperature- 1 long blink / 2 short blinks
Lamp Over Temperature- 1 long blink / 3 short blinks
Fan1 Locked- 1 long blink / 4 short blinks
Fan2 Locked- 2 long blinks / 2 short blinks
Fan3 Locked- 2 long blinks / 3 short blinks
Fan4 Locked- 2 long blinks / 4 short blinks
DMD Initial Fail- 3 long blinks / 1 short blink
Lamp Initial Fail- 3 long blinks / 2 short blinks
Ballast UART Error- 3 long blinks / 3 short blinks
Temperature Sensor Fail- 3 long blinks / 4 short blinks
Inter Lock Open- 4 long blinks / 1 short blink
any of these will result in lamp off and shutdown.
Here is a list of error codes for your unit: 12 Software bug. Contact dealer/factory. 13 Flash memory corrupted. Download new software. 14 Engineering only programming is complete. Call Christie, replace TIPM. 15 Attempting to download code without being in boot mode 16 Invalid interrupt. Power off/on. If it persists, contact dealer/factory. 17 Forced boot mode. Keys held down too long. 18 Attempting to program boot mode without jumper LAMP FAILURES 21 Lamp compartment too hot 25 Lamp 1 not installed 26 Lamp 1 Interlock: door open, lamp not installed 27 Unable to turn lamp 1 ON 28 Lamp 1 shut off unexpectedly 29 Lamp 1 driver overheated 2A Lamp 1 driver operation error (e.g. too hot can’t start) 2C Lamp 1 driver UART communications failure 30 Lamp 2 not installed 31 Lamp 2 door open 32 Unable to turn lamp 2 ON (unknown reason) 33 Lamp 2 shut off unexpectedly 34 Lamp 2 driver overheated 35 Lamp 2 driver reports operation error (e.g. too hot can’t start) 36 Lamp 2 driver UART communications failure 37 Lamp Watchdog Tripped – Unless lamps turn on again after 3 minutes, assume software hung.
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.