Main Restorations Software Audio/Jukebox/MP3 Everything Else Buy/Sell/Trade
Project Announcements Monitor/Video GroovyMAME Merit/JVL Touchscreen Meet Up Retail Vendors
Driving & Racing Woodworking Software Support Forums Consoles Project Arcade Reviews
Automated Projects Artwork Frontend Support Forums Pinball Forum Discussion Old Boards
Raspberry Pi & Dev Board controls.dat Linux Miscellaneous Arcade Wiki Discussion Old Archives
Lightguns Arcade1Up Try the site in https mode Site News

Unread posts | New Replies | Recent posts | Rules | Chatroom | Wiki | File Repository | RSS | Submit news

« previous next »
Pages: [1]
  
Go Down

Author Topic: Where are my PCB repair guys at? (How to ID cold solder)  (Read 1637 times)

0 Members and 2 Guests are viewing this topic.

harveybirdman

  • Trade Count: (0)
  • Full Member
  • ***
  • Offline Offline
  • Posts: 2540
  • Last login:December 28, 2024, 01:21:59 am
  • SHMUP'EM
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?
Logged

paigeoliver

  • Trade Count: (+2)
  • Full Member
  • ***
  • Offline Offline
  • Posts: 10994
  • Last login:July 06, 2024, 08:43:49 pm
  • Awesome face!
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.
Logged
Acceptance of Zen philosophy is marred slightly by the nagging thought that if all things are interconnected, then all things must be in some way involved with Pauly Shore.

yotsuya

  • Trade Count: (+21)
  • Full Member
  • ***
  • Offline Offline
  • Posts: 19961
  • Last login:August 25, 2025, 01:22:15 am
  • 2014 UCA Winner, 2014, 2015, 2016 ZapCon Winner
    • forum.arcadecontrols.com/index.php/topic,137636.msg1420628.html
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?
Logged
***Build what you dig, bro. Build what you dig.***

paigeoliver

  • Trade Count: (+2)
  • Full Member
  • ***
  • Offline Offline
  • Posts: 10994
  • Last login:July 06, 2024, 08:43:49 pm
  • Awesome face!
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.....
Logged
Acceptance of Zen philosophy is marred slightly by the nagging thought that if all things are interconnected, then all things must be in some way involved with Pauly Shore.

lilshawn

  • Trade Count: (+3)
  • Full Member
  • ***
  • Offline Offline
  • Posts: 7514
  • Last login:August 27, 2025, 05:48:23 pm
  • I break stuff...then fix it...sometimes
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.
Logged

Admiral688

  • Trade Count: (0)
  • Full Member
  • ***
  • Offline Offline
  • Posts: 56
  • Last login:June 07, 2025, 07:43:55 pm
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 »
Logged
Using Tapatalk
Pages: [1]
  
Go Up
« previous next »