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If the "Button" means the one on Remote Controller, you can try to find the battery inside the Remote Controller., T: S- M& h5 y% c# h6 P3 C5 t
In most of cases, there is a screw on the cover, sometime the screw might be covered by label. If the Top/Bottom Covers of Remote Controller are not secured by screw, then you can use fingernail or screw driver to open it.- ~& y6 ]' `4 _9 ]5 \
) V/ }( E0 p) @ J: ^& VIf the "Button" means the Up/Down Switch inside Garage, then thing might be more complicated. Basically, you need to check the electric circuits by multimeter. |
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