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Hi
I seriously messed up my Placid BPs.
Some of the LEDs are placed, and soldered, "backwards" on the pcb.
Any tips to a smart way of unsoldering the LEDs?
Regards
Peter
Denmark
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If they are placed way down (flush) to the PCB, best way is to use a wide tip and heat both legs at the same time. It's tricky, they are a tight fit.
Even better way if and only if they are placed "flying" is to loose them. Cut the legs and unsolder one leg at a time. LED aren't that expensive.
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Sometimes a solder sucker will work by removing most/all of the solder after it is melted with the iron by using vacuum. You heat with one hand and hold solder sucker on joint with other hand; when it melts you press button. You may have to reheat and move lead to break free from remaining solder in board hole. Spring loaded solder suckers are not that expensive and handy to have around. They are available in various sizes. Manual solder sucker squeeze bulbs are available but not as effective IMO.  A real nice one handed powered solder sucker, Hako 808. I borrow one from time to time....  Edited by user Wednesday, February 19, 2014 7:53:47 PM(UTC)
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I would worry about the PCB, not LEDs, which is cheap to replace. If you have the solder wick, remove as much of the solder as possible first to reduce the total mass to heat. Start heating a pad and pull the LED out one leg at a time. You can try to heat both pads at the same time, but iron needs to be pretty hot, and I would worry about the damage to PCB from overheating. Also google 'desolder tutorial'. Edited by user Monday, February 24, 2014 3:22:42 AM(UTC)
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I would cut the leds off, then heat and remove each pin. As others have said, replacing the LEDs is much cheaper then replacing the PCB. Excessive heat combined with physical force will result in lifted pads.
If the LEDs are mounted tight to the board, use pliers to crush the led, leaving just the pins behind.
I can supply you with new LEDs if needed.
Only after you remove the pins should you use a solder sucker or wick to remove the remaining solder. Leaving it in place while removing the pins will help the heat flow through the joint.
The key is to take your time and do not over heat the joint.
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