开云体育WARNING !!! ? The suggested method of getting off the bad chip is very rude and dangerous! This may be practical with bigger chips, but not with so tiny ones!
If using a soldering iron is desired, I recommend bending a copper wire in U-shape, just wide enough to get the Chip-body in between. This way the copper is in direct touch with all chip pins at same time and the copper allows heating up all pins simultaneously (spreads the heat). Now apply so much solder/tin to the top of the chip-body that it reaches both sides of the "U". Wait until solder joins are molten, then pick up the chip and Copper-U with a fine squeezers. It is wise to cover surrounding area with some tape (the yellow one for higher temperature) to protect it from tin drops. But - honestly - hot air is definitely the better choice.???? -> I am talking of a hot air reflow workstation, not a hot-air-gun from supermarket. Am Dienstag, 1. April 2025, 22:34:41 CEST schrieben Sie: > 1) Remove the chip body by using the cutters to snip off all the leads close > to the chip body. > 2) Using the very fine tipped, temperature controlled > soldering iron heat and remove the remaining leads with the tweezers one at > a time. > 3) Carefully remove the remaining old solder on the footprint pads > with solder wick. 4) Using the Q tips clean the footprint area with > isopropyl alcohol. 5) Examine the footprint carefully and ensure all the > pads are isolated from each other. 6) Whilst ensuring the correct chip > orientation solder in the new replacement chip by just wetting the pads > using a minimal amount of solder 7) Inspect the install to ensure no > adjacent pins have been accidentally bridged with solder. > > I hope this info is found helpful and good luck! > > 73 > Tom > VA7TA > > > |
