Question about Video Game Consoles
E74 refers to an error with either the GPU or your av cable
first try switching out av cables if that doesnt work then send it back to microsoft for repairs
if you want to try to fix it yourself try this
Since your AV cable is good, then it definately is your Scaler chip. The only way that you can fix this is if you take your xbox360 apart and resolder the GPU to the motherboard. Now theres about 50 different tutorials out there on how to take your case apart but I found that this tutorial is the best... its straight forward and includes pictures:
Okay, your xbox is apart. Next, your going to have to remove the x-clamps and GPU. Then you are going to have to resolder the GPU to the motherboard by overheating your GPU. llamma also has a really good write up on this as well. They also sell the tools that you will need, and the washers and bolts you will need.
Once you've resoldered your GPU, then you might want to consider installing a CPU fan on your outside case to prevent your xbox from overheating in the future. As of now, you cannot buy the new GPU heatsinks which have the heatpipe technology, so this is the best thing to do for the voided xbox's.
Posted on May 30, 2008
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