Zenith dlp projection t.v. model#z52sz80 t.v. turns off randomly

iur t.v. has begun to turn off randomly for no reason in the last week or so. Sometimes it will turn on and stay on for a few hours and sometimes it turns off in ten minutes. We are frustrated and would like to know if you know what it might me. The lamp light will blink red when it turns off and then as soon as the red light stops blinking you can turn it right back on and it runs perfect again but you never know when it is going to turn off.
Please Help
Shuler's ya please e-mail me at xR1Bulletx@aol.com if you fig out how to fix this, or maybe you want to buy mine and change some parts? haha ill sell it ot ya cheap.