Xbox Error E74 Warranty

Error E74 Xbox 360. What is this?
Therefore, could not sleep because it was so cold in my room. I turned on the heating and had a bit of street fighter 4. After playing a random guy in line with these strange lines began to appear. I thought it was because of my fucking television. I tried to turn the console and then gave me an E74 error. Now, I read somewhere that the error is caused by overheating. If this is true, then I can not fix it letting it cool? I have my xbox cooling near the window now. So I bought the Xbox on eBay two days ago. I took the cover and noted that the warranty seal was removed so I will assume that the previous owner had tried to fix it.
Well, you may be lucky and E74 means that AV cable is not working properly. If you have a friend who has an Xbox 3e60 debt is an AV cable and see if that solves the problem. If not, then you can scaler chips that plug into the AV or worse, your graphics card is fried. In this case, have no chance unless someone in your local craigslist offer their service to xbox fixation.
how to fix one ring of death Xbox 360