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Old 05-31-2011, 02:46 AM   #1
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Default MS3 processor pins soldered together? (pictures)

my CPU has a few pins on the surface mount processor that are soldered together, anyone else want to confirm theirs is the same?
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also I checked DIYautotune's page and here is their CPU for reference:

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Old 05-31-2011, 02:51 AM   #2
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highlighted processor pins

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Old 05-31-2011, 03:10 AM   #3
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I remember this as well...and without the schematics it is hard to tell if it is intentional or not.
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Old 05-31-2011, 09:01 AM   #4
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There are several intentionally bridged pins.
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Old 05-31-2011, 09:52 AM   #5
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Which ones are intentional though?

As Reverant said, the lack of schematics for things like this are telling.
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Old 05-31-2011, 10:29 AM   #6
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yes. they are all intentional.
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Old 05-31-2011, 11:55 AM   #7
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Having removed and replaced one of those processors, I can vouch for there being deliberately bridged pins. They are actually bridged on the board--small traces between the pads. They just happen to be somewhere that solder sticks and wicks up to look like a mistake.
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Old 05-31-2011, 12:19 PM   #8
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Quote:
Originally Posted by y8s View Post
Having removed and replaced one of those processors, I can vouch for there being deliberately bridged pins. They are actually bridged on the board--small traces between the pads. They just happen to be somewhere that solder sticks and wicks up to look like a mistake.
Yup. And the paste and components are applied very accurately by a robot.

You replaced the processor by hand? Dude you deserve an award for that...
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Old 05-31-2011, 12:47 PM   #9
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it caught me off guard, especially when all the pictures on the internet appear different than mine
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Old 05-31-2011, 04:28 PM   #10
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Quote:
Originally Posted by Ben View Post
Yup. And the paste and components are applied very accurately by a robot.

You replaced the processor by hand? Dude you deserve an award for that...
Desoldering wick works well for this. That's how I do SMD soldering.
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Old 05-31-2011, 05:06 PM   #11
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Absolutely, I sometimes fix SMD things too. That's just a lot of little pins. I know it's possible; I think I just lack the patience.
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Old 05-31-2011, 06:32 PM   #12
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Quote:
Originally Posted by Reverant View Post
Desoldering wick works well for this. That's how I do SMD soldering.
desoldering wick sucked ***** to remove the whole thing at once. I tried that and also flooding each side with solder to conduct heat but it just made a mess.

I ended up using an exacto and cutting the pins on their vertical section and then desoldering the cut legs from the board with desoldering braid.

Other method would be to use one of the dedicated QFP desoldering dealies. Exacto was cheaper.
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Old 06-01-2011, 03:22 AM   #13
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Yeah you don'y use the desoldering wick to desolder the mcu, you apply lots of solder to the newly installed chip then use the wick to get rid of the excess solder and any solder bridging betweens pins. I have a soldering/desoldering station that works well for SMDs but not if the pitch is less than 1/20". You need special **** for that and I'm not that rich.
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