I have a 6 yr old Mitsubishi DLP WD-52327 does not fire up... When power is turned on tv makes a noise like a small air compressor for a few seconds and then stops after about 1 minute it does it again, it cycles through this about 3 or 4 times with about 1 to 2 minutes between cycles, and then powers down while powering down the Lamp light flashes green and when completely powered down lamp light turns red I have replaced lamp and still get same result , the vibration air compressor noise seem to come from the lower left of the tv I am not an electronics person but after reading problems and solutions on the internet could this be a bad light engine ?

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

it seems cooling problem check if fan is working or not
and check the english user guide
http://www.manuals365.com/swf/mitsubishi/wd-62327.html?page=50

Have a look at the lamp first and the noise should be a fan.

Here is a link to the owners manual for lamp cartridge replacement. Specifically go to page 65 for instructions. Good Luck : )

http://support.mitsubishi-tv.com/files/oguide/WD-52327.pdf

Have you replaced the Lamp and Made sure Lamp Fan is running? Mats has Lamps for $99.00 1-800-628-1118

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)

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

Did your replace lamp come on the screen or did you lose picture? Just because the LED indicator suggest replace lamp it doesn't mean it needs it. If your pix was dull or loss of brightness then replace it, if not then just reset your lamp timer, check your owners manual for instructions.

In your case I've seen this and it was a electrical issue between the DLP fan and board. The tv could have a problem with the digital tuner and not kicking a code due to low voltage ... it isn't expensive to fix, just hard to diagnose.

Do you smoke? The fans suck in smoke and it gets tar build up on the connections and that causes this in some cases too.

I have a 2 year old Mitsubishi Rear Projection 52" model WD-52525. I recently experienced the same problem as you. My TV quit without any warning and the red lamp light came on. I bought a replacement lamp just like you did, did everything you did too, but it still didn't work either. Since it's past the 1 yr warranty (of course), I took it in to an authorized service center for an estimate. They determined the light engine failed and it will cost me $816.35 to repair. I already shelled out $240+ for a lamp, $48 for the repair estimate and I said "hell" no, I'm not going to fix it for another $800+ and bought a new TV. I'm writing a letter to Mitsubishi expressing my deep dissatisfaction (to put it mildly) with this faulty product and will be requesting reimbursement, which I probably won't get. I sincerely hope this is not the same problem your TV has, but if it is be prepared for a costly fix.