Hello all. I would like your help again as I have noticed the yellow DBB switch on my WM-F501 is too smooth when switching between modes, there are 3 in total so I'd expect it to notch into those 3 settings. I've had a look but cannot find a guide on taking this unit apart to check this switch is intact. Is someone able to provide one? Still yet to get a gumstick battery for this unit so I am not sure if the switch is even doing anything at this point.
It's pretty much the same as WM-501, same disassembly for the DDB switch. Send me your e-mail on private message, I will send you service manual.
