That's an Handheld PCs, not a monitor...
Hey! That thing is a antique! It's acompagnying softwares require a 33MHz 486 with 8 Mb...
You at least need to open the case, get a new switch that can fit into the location of the current switch.
Then, you'll need to un-weld the actual swtich and weld the new one in place.
Electro, October 2011