Inspiron E1705 Video/LCD Panel Dell can't seem to fix

I purchased this computer in August of 2006 and thought it was a great laptop until August of 2008. In Aug. 2008 I was using my computer and the screen all of a sudden went blank. I called Dell support and they sent out a technician to replace the motherboard and that didn't work. A couple of days later the technician came by again and replaced the LCD panel and that did work, for a little while (a few days). I had to send in my computer to Dell support and they concluded that the video card was broke. They replaced the video card and I had a functioning computer for about 4 months and then the same problems started happening again. The screen would go blank a few seconds after the computer was turned on. The technician came out again and replaced the motherboard and everything was fine, for a short while AGAIN (couple of weeks). By this time I was fed up and thought to hell with this computer and Dell but I was still under warranty. Then this summer I made a third attempt to utilize Dell's technical support. The technician came out again and replaced the motherboard, video card, and LCD panel. The funny part was when he replace the LCD panel the replacement didn't work but the original did so we stuck with the original. The fixes from this third runaround with Dell support was in May-June 2009 and guess what...my screen doesn't work AGAIN!!!!!! This time when you load up the computer there are vertical lines across the initial Dell screen and the Window's XP load up screen. When the desktop tries to load up you see a little flash on the screen and then it goes blank. I have tried to load up the screen in safe mode and that does work. I have the latest BIOS, the battery and power supply are fine (they haven't got much use over the last year), and I've taken care of this computer. This is an example of a faulty computer with poor technical support to fix it. I still have my warranty until August 2010, but I'm afraid that Dell is going to keep putting junk into my system and not fixing the problem. When next August comes around I will still have a broken PC but I will have to pay someone else to fix it.  Does anyone on this forum have a solution for me before I contact Dell support again.  I will reinstall the video driver but I've consistently had similar problems with this computer and I doubt it will make a difference.  If it's the inverter or the back light I'd expect Dell support would know that from the symptoms I've given them but I wouldn't be surprised if they didn't.