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Author Topic: Thought I Would Share This  (Read 87 times)

SDOD616

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Thought I Would Share This
« on: November 18, 2009, 06:39:00 PM »

http://www.youtube.c...feature=related

I know that this was done on a vaio laptop motherboard but wouldn't it work with the 360 as well? Provided you have a temp controlled soldering iron and a temp probe to monitor temperature?
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PRiME2008

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Thought I Would Share This
« Reply #1 on: February 02, 2020, 07:45:00 PM »

Looks like it would work no problem, spare you having to heat up the other components on the board if you knew which chip was the issue. May cost more thought, but if you have access to all the gear then it be well worth it. Clearly they heat it to 150c first to pre-warm the chip and drive moisture out then heat it too 218c to force reflow, and at 218c other components tend to start melting (plastic covered bits, buttons etc.. Esp glue. I would definitely like to do this myself thought would need to use a laser probe for testing temperature since that camera thermo method would be expensive (laser surface temp probe expensive enough),.

Actually you can get most these things cheap, skip the camera crap since a laser probe will be more accurate then a visual check, and heating the chip up a couple degrees more won't kill it so to speak.

This post has been edited by PRiME2008: Yesterday, 03:54 AM
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SDOD616

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Thought I Would Share This
« Reply #2 on: February 02, 2020, 08:12:00 PM »

i am guessing that as long the other components are insulated with perhaps aluminum foil it would work. The only problem would be the board warping. That can be prevented by using an electric griddle as a preheater for the underside of the motherboard. as for the laser temp probe, if i remember correctly, my dad happens to have 3 of them because he is a machine repairman at gm so that takes away a good $100 spent. (IMG:style_emoticons/default/smile.gif)

This post has been edited by SDOD616: Yesterday, 04:15 AM
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rjburke377

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« Reply #3 on: February 03, 2020, 09:52:00 PM »

You can also use a hot air station with properly sized heat spreader. The video shows a heat shield because otherwise the flame goes everywhere and heats the adjacent components.

A hot air station should work to reflow the BGA under the 360's video chip. As PRiME2008 says, the solder has a reflow profile that should be followed.

The camera's thermal film makes it look like the chip is being heated red hot. :-) Hope nobody does this. If you do then please make a video for our amusement.   (IMG:style_emoticons/default/laugh.gif)

/RJ
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SDOD616

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Thought I Would Share This
« Reply #4 on: February 03, 2020, 05:53:00 PM »

I'm not saying i would do this, but i thought it was pretty awesome and original. To be honest, i have seen many worse reworks. I saw this one yesterday where a metal lid with alcohol in it was lit and seated on a bga. I thought it was pretty hilarious. I am really interested in buying a rework station with a vacuum tool to remove the bga for reballing. How much would i be looking to spend minimum?
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