I power on, get sound with no picture and a green power LED. Then it shuts itself off after about 15 seconds. I have just replaced the lamp about a month ago and everything was working fine.

SOURCE: Replaced lamp and now can't get a picture

Hi Sally Jo, Unit powers on and works properly for a while then shuts off with a red lamp LED (lamp error). Suspect bad lamp part # 915P020010 2. Lamp enable line at J14 pin 6 does not switch to 5 volts after turn on, 12 and 5 volt supplies are good. Suspect the Light Engine part # 939P977010 3. At power on the lamp turns on and off three times and then the unit shuts down with a red lamp LED (lamp error). Replace the Light Engine part # 939P977010 4. Check for 12-volts DC at J-9 connector pin 4 on the Engine Driver PCB, if missing check for an open F9A09 on the Power PCB, if it is open replace F9A09 part # 283P127060 and the Light Engine part # 939P977010 5. Lamp enable line at connector J14 pin 6 on the Engine Driver PCB switches to 5 volts after turn on but does not go back to 0-volts (low) after 5 seconds, 12 and 5 volt supplies are good. Suspect the Light Engine part # 939P977010 6. Check for 5-volts DC at J-9 connector pin 1 and 2 on the Engine Driver PCB if missing replace the Power PCB part # 934C148001. Hope this helps!

SOURCE: Power turns off automatically

Same w/ mine.  Repairman said they turn off auto to protect the set no matter what is wrong.  Take it to be fixed.  Mine was right at $100.  Works great again.

SOURCE: Blinking Green Light on Mitsubishi DLP 52525

No problem, do self diagnosis test, read threads here or goto ctechnicians.com get error codes first and get back with me.

SOURCE: Mitsubishi WD-52525 Failure

Who needs a repair manual when I have you guys!! Last weekend, my 52525 died almost three years to the day. So rather than throw it away or spend hundreds (not to mention the inconvenience) of dealing with a repair shop - I read your posts. So I dismantled the unit (easily with all the great advice), found the swollen caps, ordered replacements from Mouser, installed, reassembled and the set works perfectly. Also cleaned and realigned the mirrors while it was apart. Like a new TV. Cannot thank you guys enough. Not to mention my family thinks I'm a hero!!

SOURCE: wd-52531 has sound, then clicks off after few seconds

It can be the lamp. But the color wheel and ballast can cause the same thing. Put your ear to the back of the set when you push the power button and you should can here the color wheel start up. If not, that is your problem.

Now if the lamp is not lighting up. you should here a ticking sound from the back of the set, if not the ballast is bad. If the lamp is coming on and then going out after only about 5 seconds AND you do not here the start up of the color wheel, the color wheel is confeirmed bad.