XBOX 360 Problems!!!

Hello, my friends and I sat down to play my Xbox360 and we were playing it for about 5 minutes when all of the sudden, BAM lights 1, 3, and 4 started flashing red. We tried everything I could find about it on the net and...... nothing. We did the sync code thingy and it flashed 4, 1, 4, 2 which translates to 0102 being the error code, which is "0102 unknown error - though it's most likely GPU related literally means the console does not know what is wrong. possibly a short or cold solder joint somewhere. So far there is 1 major theory for what causes most of these errors is that the Ram, CPU, or GPU are not soldered properly to the mother board due either to poor manufacturing or excessive heat up and cool down cycles that stress, weaken and eventually break the soldered connection. This can be solved by re-Heating the chips DO NOT attempt this if your console is still under warranty. If your console is still under warranty return it to the store where it was purchased or call MS to have it replaced. I have also heard of limited success by simply switching the AV cable from "HDTV" mode to "TV" mode." Now my question is, is there a possible solution to fixing this problem without having to send it back, has anyone had any luck with any other solution? My warranty actually just expired a month ago as well, so I was wondering if anyone knows any repair cost figures? Thanks everyone!!

Alright, that is all I needed to know thanks