How JustAnswer Works:
  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.
Ask Aric Your Own Question
Aric, Technician
Category: TV
Satisfied Customers: 41239
Experience:  15+ years in the field. Owner of AV Installation, OEM and Repair company
Type Your TV Question Here...
Aric is online now
A new question is answered every 9 seconds

error code 21

This answer was rated:

error code 21
Hello and thank you for the question.

What is the model number off of the back of the TV please?

What are the symptoms you're having with the set?
Customer: replied 2 years ago.


TV fan(s) kick on at power up for few seconds three times then everything turns off. Error code indicates 21

Thanks for the reply. I saw the error code. When the sets shuts down, before you press the Input and Menu buttons, does the Timer light blink on the set?

Also, when is the last time you replaced your Lamp?
Customer: replied 2 years ago.

No blinking. Lamp has never been replaced. worked fine yesterday.

Okay. When the set shuts down, does the sound continue, or does the lamp LED light up red?

Lastly, are you certain it's a 2-1 code, and not a 1-2 code?
Customer: replied 2 years ago.

No sound and no picture and never a red light. just unplugged set (blue led side lamps show for a moment) and plugged back in. after fan cycles, i pressed input and menu button for 5 sec and now get error a repeated flashing 6 blinks ontimer light

Okay, I need some more specifics.

How long have you owned the set for?

Also, when you press power after the Fans, do you hear a slight click and buzz sound? Does this process repeat a few times before it shuts down?

Additionally, try that code retrieval ONE more time, and let me know if it's still 6-6.
Customer: replied 2 years ago.

owned for 3 or 4 yrs


just hit power button, one click as normal for tv to start, blue side leds light up and fans start for maybe 10 seconds (like they're running but no buzzing ) and then off threes times. This time red LED light show up. Pressed menu and input and still get 6 flashing lights - pause and 6 flashing lights

You need to replace your Lamp. The 6-6 code indicates "Lamp not installed", "Lamp did not fire", or "Ballast did not fire". The set attempts to start up three times, then the Red LED (Lamp light) shows up. This is all common with a failed lamp. These lamps run hot and typically run between 2-3 years and are consumable components that are designed to fail. The solution is to replace the Lamp in your set with the correct OEM lamp. Try to refrain from buying the $40-$50 lamps on Amazon or from Pureglare as they are NOT rated by Mitsubishi for these sets, and tend to run for a few months at most if they even work out of the box. The link below is to the correct Lamp for your set:


If you have more concerns then please press "Reply to Expert". Otherwise, please take a moment to RATE my service as Positive. Subscription is not required and your question does not close when you rate. You are rating my advice and information NOT how this site works or how your device functions (note that a negative rating does not issue a refund).

Aric, Technician
Category: TV
Satisfied Customers: 41239
Experience: 15+ years in the field. Owner of AV Installation, OEM and Repair company
Aric and other TV Specialists are ready to help you
Customer: replied 2 years ago.

ok just ordered from site you suggested. odd course of error code changes. hope this works. lamp doesnt look burnt but manufacure date was 2008

The lamps typically won't look any different when they are bad, as they are gas charged and can lose their internal gases.

Hello, I just wanted to follow up with you and see If you've received all the information you needed. If not, feel free to reply back to me and I will continue to assist you. Best regards, Aric

JustAnswer in the News:

Ask-a-doc Web sites: If you've got a quick question, you can try to get an answer from sites that say they have various specialists on hand to give quick answers... seen a spike since October in legal questions from readers about layoffs, unemployment and severance.
Web sites like
...leave nothing to chance.
Traffic on JustAnswer rose 14 percent...and had nearly 400,000 page views in 30 days...inquiries related to stress, high blood pressure, drinking and heart pain jumped 33 percent.
Tory Johnson, GMA Workplace Contributor, discusses work-from-home jobs, such as JustAnswer in which verified Experts answer people’s questions.
I will tell you that...the things you have to go through to be an Expert are quite rigorous.

What Customers are Saying:

  • I'm screaming your praises!! WOW! I plugged my TV in and bammo! The picture came on bright and beautiful. What a relief! YOU saved me some money and headache. VM United States
< Previous | Next >
  • I'm screaming your praises!! WOW! I plugged my TV in and bammo! The picture came on bright and beautiful. What a relief! YOU saved me some money and headache. VM United States
  • I love this site! $9 instead of a repairman or new/used frig can't be beaten. This older woman will worry less now that she knows about this site. Bless you all. Windy USA
  • Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help. Mary C. Freshfield, Liverpool, UK
  • This expert is wonderful. They truly know what they are talking about, and they actually care about you. They really helped put my nerves at ease. Thank you so much!!!! Alex Los Angeles, CA
  • Thank you for all your help. It is nice to know that this service is here for people like myself, who need answers fast and are not sure who to consult. GP Hesperia, CA
  • I couldn't be more satisfied! This is the site I will always come to when I need a second opinion. Justin Kernersville, NC
  • Just let me say that this encounter has been entirely professional and most helpful. I liked that I could ask additional questions and get answered in a very short turn around. Esther Woodstock, NY

Meet The Experts:

  • Louie



    Satisfied Customers:

    25+ yrs. experience in the field and 5+ yrs. online, down to component level.
< Last | Next >
  • Louie's Avatar



    Satisfied Customers:

    25+ yrs. experience in the field and 5+ yrs. online, down to component level.
  • Rod's Avatar


    TV & Communications Sys Repair

    Satisfied Customers:

    FCC Commercial License, Previous owner of Electronics Repair shop, 40+ years in electronic systems.
  • Pete's Avatar


    Electronic Engineer

    Satisfied Customers:

    Over 16 years of experience installing and repairing electronics.
  • Steven's Avatar



    Satisfied Customers:

    Ma. Master Technician Lic. Authorized Warranty Support.
  • euro-pro llc's Avatar

    euro-pro llc


    Satisfied Customers:

    20 years in TV repair,certified by all major brands- Sony,Samsung, LG,Toshiba, Panasonic, RCA,
  • Daniel's Avatar


    Electrical Engineer

    Satisfied Customers:

    BSEE (Electrical Engineer), 10+ years electronic design experience ,chip, board, component expert
  • Conrad's Avatar



    Satisfied Customers:

    Training on many types of consumer electronics, training on Sony Samsung and JVC