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[elitescouter]

Ok I have a couple of questions but I didnt want to make 3 threads so here they are.

1). I have an old dash xbox 360 that is jtagable, but I am not sure if it is or if it's not banned from live. If I hook it up it demands for it to be updated but I dont want to update it. Any way to check if it's not banned with the old dash?

2). I have read around on reflow and watched videos, but I am still not too sure about this. I know the board flexes when hot. After heating it up, should I let it cool on it's own or put a fan close by to blow some cold air?

3). I had a couple 360's that would error now and then and sometimes worked fine, but I wanted to do a reflow anyways to make sure it's not going to be giving any problems in the future. I reflow the board, I let it cool with a fan (It's like 45 inside my garage) so the fan cools it off pretty fast. I plug it in, smoke comes from one of the components and then I get RROD. I couldn't really see where it came from, it didn't make any noise it was just a mini mushroom smoke and then problem. Any ways I can figure out where that came from or no? I looked with a magnify glass all over the board and even on the spot where the smoke looked like it came from, and nothing...

Thanks all!

[thwack]

1. Remove/bridge R6T3. Dump original NAND several times, and if you know you've got good NAND dumps (check in Degraded etc), then connect to Live. Even if they update the NAND (it will error), your efuses are still ok. However, it shouldn't matter if the 360's banned as you shouldn't need to go online with a JTAG'd 360 (IMG:style_emoticons/default/wink.gif)

2. Cheapest method to do this - (and practise first), I think Sodiumba came up with the times for this. 500c heatgun. Griddle (panini/crepe). Aluminium tape. Pop the 360 on stands (use nuts, washers ands bolts - about 1-2cm above the griddle), isoloate the area to reflow with aluminium tape, leave on the griddle for 5 minutes so the board heats up. Hot airgun continuously moving at 250C for 30 seconds, same again for 15 seconds at 500C. Always keep the air gun at least 15cm away from the mobo. Turn off griddle and leave mobo for at least 30 minutes without touching it!

Best method: Get someone to professionally reflow/reball it using a decent IR setup.

3. I know this is going to sound odd, but sniff the mobo (IMG:style_emoticons/default/wink.gif) You should be able to isolate where the component is that's smoking. Sounds like either - too much heat, or a voltage regulator is kicking out too much juice and causing a cap to blow.

This post has been edited by thwack: Feb 15 2010, 03:58 PM