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I repaired an hx4700 with a broken battery latch switch. It was literally the only thing preventing the unit from turning on.
What you have to do is bridge the contacts on the back side of the switch (opposite from the switch arm side). Running a bit of solder along the back should do the trick.
Perhaps a diagram would help:
_ : :
The "_" is the area where the battery would be. The ": :" represent the contacts for the battery latch switch-just pretend that they are rotated counter-clockwise slightly. The left set of contacts is always bridged, but the right set is opened or closed depending on the switch's position.
_ | : when unlatched, _ | | when latched
What you want to do to bypass the switch is bridge them like this:
_ | | (or, more accurately, _ \ \ to factor the rotation)
Does this help, or should I disassemble my hx4700, take a photo, and edit it to show you how the contacts should be bridged?
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