Sony KP-61XBR300 61 in. TV

I've owned one for 4 years now, it has broken 4 times so far, it's great when it comes to video quality, I've never seen a projection tv with such video clarity that rivals a tube screen. When it comes to reliability it's a nightmare, after a 1 and a half year of use the screen upper edge began to tremble from side to side, one month after repair, the same problem started to happen again, after being repaired for a second time the technitian said that he had changed every electronic component and that I had a new TV now, last August almost 4 years after I bought it a firecracker like noise began to sound from the rear and the screen would tremble at the same time, repair it again for the 3rd time and a couple of days ago 4 month later the screen went blank and no sound at all and the timer red lite in front of the tv blinking continuosly. A technitian will come again on monday for the fourth time...
Wish me luck...Sincerely Alex