This is a how-to video that explains how to remove and reinstall the printed circuit boards on models:

AOU9RL2, AOU9R2, AOU9RL, AOU9RLFC, AOU9RLFF, AOU9RLFFH, AOU9RLFW, AOU9RLFW1, AOU9RLS2, AOU9RLS2H, AOU9RLS3, AOU9RLS3H, AOU9CQ, AOU9RLQ, AOU9RLS, AOU9RQ, AOU12RL2, AOU12RLFC, AOU12RLFF, AOU12RLFFH, AOU12RLFW1, AOU12RLS2, AOU12RLS2H, AOU12RLS3, AOU12RLS3H, AOU12R2, AOU12CQ, AOU12RL, AOU12RLFW, AOU12RLQ, AOU12RLS, AOU12RQ, AOU18CL, AOU15RLS, AOU18RL, AOU18RLQ, AOU24CL1

Link to Video