We have seen some interposer and sandwich issues where some pads, after cleaning them to reball - will not accept solder. They seem to be oxidized. This is how we rejuvenate those pads so we can get the board back together. ▬ Contents of this video ▬▬▬▬▬▬▬▬▬▬ 0:00 - Intro 0:30 - Oxidized pads 1:09 - Problem with solder 1:43 - Scratch the pads 2:17 - Tin pads A few of us have been building a Wiki page to help out fellow technicians too. Feel free to help contribute and take advantage of it at https://logi.wiki/index.php --------------------------------------- Hey there everyone! I am a small business that repairs electronics based in Paraguay, South America (google if you must) I thought I would try streaming some of my work and answer questions along the way. I work on Apple devices and bring them back from the grave (ghost sounds) Want to know more about us? Check out our Facebook https://www.facebook.com/clinicadelamanzana Thanks for joining in :D Jump into chat, I love the company and fun viewers can bring! Feel free to jump over to my other streaming platforms if you want to support me! https://www.twitch.tv/joesipaq What is this cool boardview program I use? It is made by Paul Daniels and you can get your own copy here! https://pldaniels.com/flexbv/ Are you a fellow Video Gamer? Do you Like paying what you want for your video games? Want to support me somehow with $$? Follow my Partner Link to Humbebundle! https://www.humblebundle.com/?partner=joesipaq Want to support us with making more content? Check out our patreon and consider becoming a patreon! https://www.patreon.com/joesipaq