I have a 4GB xbox360 slim with unlocking LT 3.0 I was using frequently. But two days ago. it presented a different locking (screen freeze) I thought it was the CD that was scratched. but the problem persisted by locking even on the main screen of the xbox. I opened it and made a careful cleaning. I used to check the solder of the chip (which was normal) Now comes the weird part, after that I played for hours, and I still spent the night watching netflix on the console with no problem. I thought I had solved the problem, but today it has stopped again and frozen the screen. Or other times, it only beeps a few times and even goes off by itself. I tested my sources of energy and I even connected a stabilizer but it did not solve the problem. Today I saw a tutorial on the internet that solved the problem of the whistles by using the FLET cable that connects the sensor. (I passed an insulation tape to avoid contact with the aluminum part) So far he has not presented the problem again. but I'll come back here to see. I would like to know if anyone else has gone through something similar ??? I'm praying it's not the BGA or the unlock chip. or internal memory.