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Dampen a shop towel with 99.9% pure isopropyl alcohol.
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Rub the dampened towel over the bottom of the controller unit.
| - | [* black] You will grab your new Electronic Speed Control unit and prepare the surface for the new adhesive. You will use a dab of alcohol on a shop towel to wipe away any contaminants that may be on the base of this unit. |
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| + | [* icon_note] From this step onwards, work with your new controller unit, not the old one. |
| + | [* black] Dampen a [link|https://www.amazon.com/Avalon-Towels-Cotton-Shop-Multipurpose/dp/B0BQBZ4TK2/ref=sr_1_25?keywords=shop%2Btowels&qid=1689176515&redirectFromSmile=1&sr=8-25&tag=ifixitam-20|shop towel|new_window=true] with [link|https://www.amazon.com/s?k=isopropyl%2Balcohol%2B99%25&tag=ifixitam-20|99.9% pure isopropyl alcohol|new_window=true]. |
| + | [* black] Rub the dampened towel over the bottom of the controller unit. |
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