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If the "Button" means the one on Remote Controller, you can try to find the battery inside the Remote Controller.
; I' V7 [; {/ ?+ u3 P7 bIn 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.3 C3 G" K: [5 _) U) e/ H
2 w9 U1 n! j: `& Y( r2 `3 tIf 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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