E74 System Error and one red ring on startup!

[Mod removed: No suggestions about self-repairs, please] I do recommend you get a new slim one they run 10 times cooler.

Only one thread per issue is required. This has been answered in your other thread.

forums.xbox.com/.../1986103.aspx

You apparently have no idea what they do to properly refurbish and reflow a console. It's done in a reflow oven. Which costs thousands of dollars. They wouldn't create these reflow ovens and charge thousands of dollars if you could do it with a $50 heat
gun. The only one who does towel tricks is apparently you. You spent 0 dollars admitting to breaking Microsoft TOS? Good for you. I have an old console and do not have any modifications made to it. If heatguns didn't damage the board, then there would be no
warnings of boards gone bad. Just because you opened your console and watched a few YouTube videos does not make you knowledgeable about the topic. Working in a repair center with trained techs and proper hardware does.Improperly 'fixing' your console chops
its life in half. If anyone has lost credibility it's you.

tl;dr, don't tell people to open or modify their consoles.

[Mod removed]

either way im done talking have a good day.

You can't tell him to 'fix it himself'. It's against the TOS. Not to mention people break it even more and then blame Microsoft. He needs to replace it. To get a proper reflow, it costs about 90 bucks, which is more than actually getting a new refurb console.
So no. Don't open it, don't try to fix it yourself.