Build Your Own Arcade Controls Forum

Main => Main Forum => Topic started by: harveybirdman on March 08, 2016, 08:41:35 pm

Title: Where are my PCB repair guys at? (How to ID cold solder)
Post by: 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?
Title: Re: Where are my PCB repair guys at? (How to ID cold solder)
Post by: paigeoliver 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.
Title: Re: Where are my PCB repair guys at? (How to ID cold solder)
Post by: yotsuya on March 09, 2016, 12:58:41 am
On U23, is that a hair lying across the traces?
Title: Re: Where are my PCB repair guys at? (How to ID cold solder)
Post by: paigeoliver 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.....
Title: Re: Where are my PCB repair guys at? (How to ID cold solder)
Post by: lilshawn on March 10, 2016, 12:52:43 pm
just overall crusty. I'd give it a good clean first.
Title: Re: Where are my PCB repair guys at? (How to ID cold solder)
Post by: Admiral688 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?