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Author Topic: Where are my PCB repair guys at? (How to ID cold solder)  (Read 1667 times)

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harveybirdman

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Where are my PCB repair guys at? (How to ID cold solder)
« on: March 08, 2016, 08:41:35 pm »
Working on some boards, do you expert repair types see anything fishy about these ICs? Maybe U21?
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paigeoliver

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Re: Where are my PCB repair guys at? (How to ID cold solder)
« Reply #1 on: March 09, 2016, 12:57:06 am »
Quote from: harveybirdman on March 08, 2016, 08:41:35 pm
Working on some boards, do you expert repair types see anything fishy about these ICs? Maybe U21?

It is probably fine, although the left side looks a little funny. Set your multimeter to test continuity and test all those connections on the left side.
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yotsuya

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Re: Where are my PCB repair guys at? (How to ID cold solder)
« Reply #2 on: March 09, 2016, 12:58:41 am »
On U23, is that a hair lying across the traces?
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paigeoliver

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Re: Where are my PCB repair guys at? (How to ID cold solder)
« Reply #3 on: March 09, 2016, 01:04:33 am »
Quote from: yotsuya on March 09, 2016, 12:58:41 am
On U23, is that a hair lying across the traces?

Nice catch, clean that off, it probably isn't conductive, but if it was.....
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lilshawn

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Re: Where are my PCB repair guys at? (How to ID cold solder)
« Reply #4 on: March 10, 2016, 12:52:43 pm »
just overall crusty. I'd give it a good clean first.
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Admiral688

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Re: Where are my PCB repair guys at? (How to ID cold solder)
« Reply #5 on: March 12, 2016, 04:48:03 pm »
Agree. Take a qtip with alcohol to it and see if the pieces clean up nice.

Also, what's on the left side of u23? Looks like a silver colored thread? (not the dark hair). Is that a trace jumper?
« Last Edit: March 12, 2016, 04:50:54 pm by Admiral688 »
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