Cheapest way to desolder SMD's (anyone ever tried this?) - Page 1
Forum section: electronics / beginners

author: Cliff Matthews
author_rank: Unknown
timestamp: December 09, 2017, 09:24:00 pm
content: I do have one of these, but I'll need to buy sunglasses first.. have a good laugh!https://youtu.be/aGSFZ2eadaA?t=217

author: kalel
author_rank: Frequent Contributor
timestamp: December 09, 2017, 10:32:29 pm
content: Seems hot, as well as blinding, so it would need a lot of care to use.However, this does seem to work (according to the videos).I remember seeing this video:Edit: Actually it wasn't that one, it was one where it was used in a reflow type repair. That one demonstrates the idea, however.

author: Mechatrommer
author_rank: Super Contributor
timestamp: December 10, 2017, 05:13:22 am
content: Quote from: Cliff Matthews on December 09, 2017, 09:24:00 pmwhy? imho its seems pretty much valid and i dont see anything to laugh about (except she put in a few pcb/tool advertisements in the middle)

author: netdudeuk
author_rank: Frequent Contributor
timestamp: December 10, 2017, 08:58:06 am
content: Interesting but that prizing at 03:00 looks severe and risky.

author: cowana
author_rank: Frequent Contributor
timestamp: December 10, 2017, 11:22:53 am
content: The problem with IR reflow ovens (and even more with a bulb) is that the black body of the IC absorbs a huge amount more heat than the shiny pins do.That means that while you might be able to reflow the part, you'll be subjecting the die to a much higher temperature than you would with hot air, or applying a specialised iron directly to the pins.

author: Swake
author_rank: Frequent Contributor
timestamp: December 10, 2017, 01:20:45 pm
content: Try a heat gun, the paint stripper type. On maximum setting of course. Will blow you away

author: ogden
author_rank: Super Contributor
timestamp: December 10, 2017, 01:56:31 pm
content: Quote from: Swake on December 10, 2017, 01:20:45 pmSure- Also PCB will be clean of components as new.

author: paulca
author_rank: Super Contributor
timestamp: December 10, 2017, 07:26:56 pm
content: If it's an iPhone you can do it in the microwave. Bonus is it will charge the battery tooOld wife's trick they don't want you to know

author: Raj
author_rank: Frequent Contributor
timestamp: December 12, 2017, 04:02:10 pm
content: I used to dry glue in a similar way.Interesting idea, could automate de-soldering by having the board on top and the bulb, below. The components will simply fall on the ground

author: Swake
author_rank: Frequent Contributor
timestamp: December 12, 2017, 07:00:22 pm
content: Long time ago when the horses could talk and I was on a budget I used to reclaim components from boards using a paint stripper heat gun. Quick and easy, also for trough hole components and bigger pads.First heat up an area of the board to melt the solder and then firmly tap the board over a box to recover the components falling off. It does not take much practice and there was solder all over the place too, but that was a minor inconvenience compared to unsoldering all those things one by one.

author: james_s
author_rank: Super Contributor
timestamp: December 12, 2017, 10:49:45 pm
content: I'm not surprised that it works. Incandescent lamps are very efficient at generating heat, so this is little different than a reflow oven using a heating element.