[planigan]

mandh, hi. I actually removed the sub-chassis from my 37-650 and then removed and disassembled the switch. Having done it that way let me spare you the agony I went through when I attempted to reassembly. I had not taken pictures or drawn same as to the orientation of the switch itself (having only two mounting screws it can go in two ways, one the right way and the other 180 degrees out). The second problem is the same, the wafers have a elongated opening like a rectangle but with rounded ends in the center rotor part and that's the same with the shaft and again could go in 180 degrees out. Fortunately, and I think this was done for proper production line assembly (not anticipating a clutz like me) the switch mounting plate had a tab on it that would only fit into a hole in the chassis when properly orientated.
Next, if you look carefully at the switch shaft rear end you will see a small bump/dimple/protrusion on only one of the long sides of the shaft and a corresponding groove/notch on the wafer rotors so, unless you force the wafers back on, the line up of the bump to groove will correctly orient the switches. Before I discovered these orienting points I thought I had lost the radio. Can you imagine the havoc having the switches disorient would cause! Been there, done that. PL