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Troubleshooting Mitsubishi TV Shutdown Problems

Mitsubishi TV's contain a diagnostic feature that remembers the cause of the last shutdown, as long as no one has turned the set on again after the shutdown occurred.  To read the diagnostics, do the following:

Models up to 2008

  1. Wait for the set to shut itself down.
  2. Press and hold both the
    • DEVICE and MENU buttons, or
    • MENU and INPUT buttons, or
    • ACTIVITY and CHANNEL DOWN buttons
    on the front of the TV for at least 5 seconds.  (Button names are different on different models.)
  3. The LED on the front of the set will start blinking a 2-digit code to indicate the type of problem detected.  For example, the sequence:  blink-blink, pause, blink-blink-blink, indicates an error code of 23.  This sequence repeats 5 times, so you can figure out if you are seeing 23 or 32.   If in doubt, repeat steps 2. and 3. (Don't turn the TV on!) to recheck the count.
  4. Look up the code in the following list.  The list is simplified to eliminate internal circuitry codes that only technicians are qualified to repair.
Error Code Meaning Probable Cause/Fix
Fast constant blink that stops Normal TV reset Wait 70 secs. for reset to finish.
Fast constant blink that does not stop TV fails to boot. Needs DM module or chassis repair.
Slow constant blink TV turn-on timer is set. Use TV menu to turn off timer.
12 No error detected Power supply problem
21 X-Ray protect (CRT TV's) Excessive high voltage
22 Short protect (CRT TV's) Excessive load on power supply
22 Recovery from reset (LCD TV's) TV needs to be reset.
23 Loss of deflection (CRT TV's) Vertical or horizontal circuit failure
32 Lamp cover is open. (DLP TV's) Remove and reinstall lamp door.
33 Air filter cover is open. (DLP TV's) Remove and reinstall filter door.
34 Lamp failure (DLP TV's) Replace lamp.

35,36,37, 42,45,55

Fan stopped (DLP TV's) Find which fan is stopped and replace it.
38,39 Over temperature (DLP TV's) Clean cabinet vents; allow airflow to set.
66 Lamp did not start. Bad lamp or lamp ballast
  1. Read the Probable Cause/Fix box to find a possible solution to the problem.  If you need to call a service center, be sure to give them the code you discovered.  It will help them diagnose the problem and order the needed parts.


2009-2012 Models

Mitsubishi 2009 and later models use a different error code system.  As soon as a shutdown occurs, the STATUS LED will either light up steady red or yellow or blinking. It can also blink first in red and then in yellow to give the 2-digit error codes shown in the table, below.  For example, 3 red blinks followed by 4 yellow blinks would represent error code "34."  All the useful codes are shown below.

STATUS LED Error Code Meaning Probable Cause/Fix
Steady Red Lamp failure (DLP TV's) Replace lamp.
Steady Yellow Excessive temperature Clean cabinet vents; allow airflow to set.
Blinking Yellow Lamp cover door is open. (DLP TV's) Remove and reseat lamp door.
Blinking Red and Yellow This is a two-digit error code. Refer to text above and find the code # below.
16,61 Lamp enable not issued. (DLP TV's) Possible bad color wheel.
24,36,37,42 Fan stopped. Find which fan is stopped and replace it.
32 Lamp cover door is open. Remove and reseat lamp door.
34 Lamp turned off. (DLP TV's) Replace lamp.
66 Lamp did not start. (DLP TV's) Replace lamp.