*Place the unit face down on a towel or similar non slip material ...
*Remove all the screws on the back cabinet panel except for the screws around the cable collector panel - these screws connect the cable collector panel to the back cabinet half - these screws do not need to be removed ...
*Separate the 2 halves of the cabinet just slightly - 1 inch or so ... taking care to keep the cabinet gasket on one cabinet half or the other - doesn’t matter which half ...
*Only open the 2 halves enough to provide access to the wire connections from the back cabinet cable connections and where those cable connections “quick connectors” push into the mother board ...
*Take pix of every wire “quick connector” at the motherboard before disconnecting - all 4 edges of the unit ...
*Disconnect the “quick connector”s from the motherboard ... this should allow the cabinet back half to be removed ...
*Remove the ribbon cable from the board behind the push buttons ...
*Remove the screws holding this board ...
*Remove the white plastic spacer ...
*Remove the rubber button collective sheet ...
*Clean the buildup gunk from around each rubber button protrusion ... and all gunk visible ...
*Re-assemble in reverse order ...
Rickie