Garmin Zumo 590LM Replacement Power Button You must disassemble the Garmin to install this from the inside. You will need a Torx #5 and a Phillips #0. There is also a delicate ribbon cable. If the rubber of the Zumo housing is brittle then some will likely crack and flake off but that should only be cosmetic. Caution: after installing this, it will be very easy to push-down hard on the electronic button on the circuit board and in extreme cases you might even crush the electronic button. Unfortunately as there is no rubber this is not waterproof
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