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Changes to Step #4

Edit by Yang Zhao

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[title] Install new diode
[* icon_reminder] Make sure to test the new diode before installing it.
[* black] Apply some solder
A working TVS diode will show much higher resistance in one direction relative to the padsother.
[* black] Hold theInstall a new diode in place using tweezers. While applying slight downward force, apply heat to a pad until the solder melts and joins to the lead. Repeat with the other leaddiode.
[* icon_reminder] Make sure to test the new diode before installing it.
[* black] Apply some solder
A working TVS diode will show much higher resistance in one direction relative to the padsother.
[* black] Hold theInstall a new diode in place using tweezers. While applying slight downward force, apply heat to a pad until the solder melts and joins to the lead. Repeat with the other leaddiode.
[* icon_caution] Note the marking on the diode which indicates its orientation. The bar must be pointing '''towards the antenna'''.
[* black] Apply flux to the pads, and add a thin layer of solder to the pads. If solder does not seem to stick to the pads, you can do it to the underside of the diode pins instead.
[* black] Hold the new diode in place using tweezers. While applying downward force, apply heat to one pin near the solder until the solder melts and makes a connection. Repeat with the other lead.
[* light_blue] Verify that the connections are good. There should be continuity between: one pin of D6 and a pin in VR3, and; the other pin of D6 and D7.

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