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If the "Button" means the one on Remote Controller, you can try to find the battery inside the Remote Controller.
! Z8 O, J4 e: xIn 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.8 Y% ^9 [6 n- S
) e0 q8 _4 X" I9 ~2 F9 _, \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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