My 2 1/2 yr old Mitsubishi 65 inch DLP will not turn on.E code 12

Mitsubishi rear projection DLP keeps turning off and shutting down. The red light then turns on for a while and then turns off. TV can be turned on again and works fine until a random shutdown occurs again. No fault codes are stored. No blink codes. No airflow warning messages. The original thermal sensor was replaced 8-1/2 years ago. Fans are completely clean and running smoothly. I fixed this problem by replacing the 8.5-year-old thermal sensor. The problem is gone. Mitsubishi thermal sensor part number 299P313010A. Manufacturer part number YS11A95B-C6. Do not use the connector plug. Strip the wires, and hard wire and solder the 2 connections. This might also apply to these models: WD-52631, WD-57731, WD-57732, WD-65732, WD-57831, WD-65831, WD-Y57, WD-Y65

if the power LED is flashing green then there is a circuit or board that either has a blown fuse or relay. if it comes on solid red when you turn on the television then the Lamp inside is burned out and needs replaced. Before you spend all the money that changing the bulb would cost i would invest that money in a good LED Smart TV instead. Sometimes you just gotta let that old technology go away.

might need to change the bulb soon. Is it LED or a regular bulb?

I am familiar with this model, if 8 years old do not invest any money in it as most parts are no longer available from Philips.

Saw a lot of them when only a few years old get junked.

That means you need to replace the Optical Unit Block/Light Engine.Dmd board has been known to cause this also, but most of the companys replace Dmd and optical unit.
PTS rebuilts Light Engines 1-800-844-7871
Encompass Parts Distribution List this Model /Parts 1-800-638-3328

hi,
Check the lamp of you tv. The lam is burned. that's why you heared a pop up sound and burning smell. Just check it and replace it. you will get the picture back.
ok

You need to replace the main board, call Mitsubishi help line, they did not charge me a dime (If your TV is less than Yr old)

Hi,
looked up owners manual that was a waste of time, hmm the number one issue on this type of set is issues with the lamp. How old is it? Has it ever been replaced? Sometimes a visual inspection of lamp can fool you, but typically as they age a milky haze develops on the lamps glass or if it popped the lamp will be shatttered inside. Can't hurt to check it. make sure set is unplugged first just to be safe.

Its far more likely the result of the power pwb capacitors that have failed. As the 34 code will appear if the capacitors fail on the Power PWB. You can get the V26 DLP Power repair kit at the following link.with free instructions
http://servicemanuals.vstore.ca/product_info.php/pName/mitsubishi-v26-dlp-power-pwb-repair-kit/cName/repair-kits

If you wish to get some details; visit the site linked here. Pull up older posts.
http://electronicshelponline.blogspot.com/
Line faults & possible causes to LCD, DLP & Plasma screen are given with illustrations. You can get an idea about the fault to an extent. Faults to all LCD & Plasma screen are similar, irrespective of its brand and screen size.