Battery leaked. How to repair contacts?

[hans gruber]

I had a battery leak which has damaged the contacts. I used foil for a bit, but it was hit and miss. Is there way to repair these contacts?

 

[Derek W]

Clean BATTERY CORROSION on ELECTRONICS! EASY DIY! | 2-minute Tutorials Ep.4

We will fix your corroded battery contacts on any of your battery powered electrics easily. We clean the corrosion and get your electronics fixed!We will sho...

youtu.be

I forget which other videos I've seen but have a look for tronicsfix or stezstixfix I think theyve rubbed the contacts down and added some solder to make a better contact after the corrosion has been removed

 

[darael]

Take apart, check for further spread of corrosion, then apply white vinegar to all affected areas and leave for about 10 minutes. Lightly clean with something like a toothbrush, then dry off all treated areas before spraying on isopropyl alcohol to clean the area. After that, any soldering work should be done to replace components or patch any traces with thin wire.

 

[hans gruber]

What did I miss?