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If the "Button" means the one on Remote Controller, you can try to find the battery inside the Remote Controller.
+ P6 M) p8 v* l) F$ }3 V# I9 u0 HIn 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.5 V7 ]+ J ?3 x& S
' [1 l6 M, t0 v7 ~( S D& \If 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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