I have a Mitsubishi WD-57732. The problem started

just replace the lamp, no adjusts needed. I recommend a Phillips, OSRAM, or the original Mitsubishi lamp, as others will either not work or have a very short life.

http://www.shopjimmy.com/dlplamps?tv_brands_select=Mitsubishi&tv_models=Mitsubishi+WD-57732

Remove the lamp and do a visual inspection.
If this is a DLP you may have a bad color wheel! whistling sound is a sign of color wheel.

Good luck to you

www.aaatvservice.com

The lamp needs to be replaced. It's on the back and easy to do. I replaced mine about 3 months ago and it was about $182.00. Hope this works, I know it's hard to fork out that kind of money at this time but once you do the TV will be as good as new. Take care

The thermal sensor is located on the lamp cartridge housing. here take a look at this link
http://www.keepandshare.com/doc/1864328/wd-series-lamp-temp-service-bulletin-vs72-pdf-april-18-2010-6-50-pm-1-0-meg?dn=y

check lamp it looks like your lamp went out, and replace it, tv should be working again to normal.

There are a few issues here:

The lamp you are purchasing could not be OEM, or a compatible lamp--OR you have a ballast/power supply issue blowing the lamp out.

The original lamp is manufactured by Osram, but a better and compatible lamp would be Philips, who pioneered the lighting for DLPs. The ballast needs to be compatible with the lamp and Mitsubishi ballasts are compatible with most lamps, but work best with Philips and Osram. Only buy from an authorized dealer!

I have the same tv and the same problem happened to me (Actualy twice). It turned out to be the color wheel motor. thats what the clicking noise is.

most new bulbs come with the casing

The sensor is located on or near the lamp compartment on the back side. If your lamp keeps blowing it may be the lamp cooling fan not working. However are you sure the lamp is blowing? Press menu and device on the front control panel both in together for 5 seconds and see if the led blinks a two digit code, then let me know the code. Please respond to this same post.

is it tha lamp cracked? are you using original lamp from mits? i founded people using aftermarket lamps with other specks this lamp is 150 watts ,this info its going to help.
if components on the Power board K9A20 and/or K9A21 are shorted. Also, R9A02 may be open. Possible side effects are a deformed lamp exhaust duct and damaged lamp. Replace PWB-POWER part # 934C228003 and if necessary, Lamp part # 915P049010, Lamp Exhaust Duct part # 642B155010, and/or Lamp Exhaust Duct Cover part # 642B156010 let me know if you need anything else