diff --git a/HOWTO/smt-component-removal-HOWTO.md b/HOWTO/smt-component-removal-HOWTO.md new file mode 100644 index 0000000..487ac67 --- /dev/null +++ b/HOWTO/smt-component-removal-HOWTO.md @@ -0,0 +1,43 @@ +# SMT Component Removal HOWTO + +## Items needed + +* PCB with components +* PCB cradle +* ZT-1 Airbath +* ZT-3 Airpick +* Anti-static brush +* No clean flux +* De-solder wire +* 2x foam swabs +* Solder vacuum +* Non-flammable flux remover + +## Procedure + +1. Secure the PCB in the cradle above the ZT-1 airbath. + +1. Use an anti-static brush and the no clean flux to apply the flux onto the contact leads of the component. + +1. Turn on the airbath to warm. It will slowly heat up to 150 C. + +1. Take a strand of de-solder wire and melt it directly onto the leads of the component. Can be liberal and use as much as needed to cover all the leads. + +1. After a couple seconds, the de-solder will fully melt onto the leads. + +1. Pick up the ZT-3 Airpick. Place a finger over the hole to create a vacuum. + +1. Use the airpick to pick up the component. Release your finger to drop the component. + +1. Use a foam swab and the no clean flux. Gently use the swab to push the de-solder blobs into one bubble. + +1. Use a vacuum to suck up the bubble of de-solder. + +1. Use the foam swab and no clean flux to apply a light coat of flux to the area. + +1. Switch the airbath to cool. + +1. Use a foam swab and the non-flammable flux remover to apply the remover to area. It is recommended to apply a second coat. + +1. Turn off the airbath and remove the PCB. + diff --git a/HOWTO/smt-component-removal.odt b/HOWTO/smt-component-removal.odt deleted file mode 100644 index b1a847e..0000000 Binary files a/HOWTO/smt-component-removal.odt and /dev/null differ diff --git a/HOWTO/solder-pot-HOWTO.md b/HOWTO/solder-pot-HOWTO.md new file mode 100644 index 0000000..636bd70 --- /dev/null +++ b/HOWTO/solder-pot-HOWTO.md @@ -0,0 +1,28 @@ +# Solder Pot HOWTO + +## Items needed + +* Solder pot +* Lead-free solder, cut into small enough pieces to fit in the solder pot. +* Dross Skimmer +* Tweezers +* Component(s) + +## Procedure + +1. Turn on the solder pot to its highest temp. + +1. (First time) Add a piece of lead-free solder. + +1. After initial use, the pot will melt the current solder in it from last use. + +1. As the first piece melts, add additional pieces of lead free solder until the melted level is near the top of the solder pot. + +1. Use the skimmer to remove the top layer of residue from the melted solder. + +1. Using tweezer, dip your component leads into the solder. The only the leads should be put into the solder, avoid contact with component itself. + +1. Repeat 4 and 5 for all components. + +1. Turn the solder pot off. The remaining solder will solidify and will be melted again in future use. + diff --git a/HOWTO/solder-pot-use.odt b/HOWTO/solder-pot-use.odt deleted file mode 100644 index a51dd5a..0000000 Binary files a/HOWTO/solder-pot-use.odt and /dev/null differ diff --git a/HOWTO/through-hole-component-removal-HOWTO.md b/HOWTO/through-hole-component-removal-HOWTO.md new file mode 100644 index 0000000..110512f --- /dev/null +++ b/HOWTO/through-hole-component-removal-HOWTO.md @@ -0,0 +1,34 @@ +# Through Hole Component Removal HOWTO + +## Items needed + +* PCB with component(s) to be removed +* PCB cradle +* No clean flux +* 2 cotton swabs +* Soldering Iron +* De-solder wire +* Solder vacuum +* Tweezers +* Flux remover + +1. Secure the PCB into the cradle. + +1. Swab the area with no clean flux. + +1. Heat the soldering iron up to the melting temperature of the solder on the board. For lead-free solder, this around 420 C. + +1. Using a soldering iron, melt some de-solder wire onto the leads to be soldered. + +1. Press the soldering iron against the lead. The de-solder and solder should melt into a bubble. + +1. Use a solder vacuum immediately after removing the soldering iron away from the lead. + +1. Repeat 4-5 until enough solder has been removed so that the lead can freely move. If this is not the case, add step 3 as well. + +1. Repeat 4-5 for every lead. + +1. The component should be able to be removed with tweezers. Turn off the soldering iron. + +1. Use a cotton swab and flux remover to clean the area. + diff --git a/HOWTO/through-hole-component-removal.odt b/HOWTO/through-hole-component-removal.odt deleted file mode 100644 index 6653930..0000000 Binary files a/HOWTO/through-hole-component-removal.odt and /dev/null differ diff --git a/README.md b/README.md index 5285705..178177f 100644 --- a/README.md +++ b/README.md @@ -206,8 +206,8 @@ HOWTO Solder BGA components. ## Rework through hole components HOWTO Rework through hole components. -* [Through Hole Component Removal] -(through-hole-component-removal.odt) +* [Through Hole Component Removal HOWTO] +(HOWTO/through-hole-component-removal-HOWTO.md) ## Rework SMT components HOWTO Rework SMT components. @@ -215,7 +215,7 @@ HOWTO Rework SMT components. Current Practice: * [SMT Component Removal HOWTO] -(HOWTO/smt-component-removal.odt) +(HOWTO/smt-component-removal-HOWTO.md) ## Rework BGA components HOWTO Rework BGA components. @@ -240,8 +240,8 @@ HOWTO Apply solder paste with electronic syringe. ## Solder Pot HOWTO Use a solder pot. -* [Solder Pot Usage] -(HOWTO/solder-pot-use.odt) +* [Solder Pot HOWTO] +(HOWTO/solder-pot-HOWTO.md) # PCBA Testing Pins.