OVEN DESOLDERING!

[BiOzZ]

i saw the hot air gun desoldering and thought i could do the same with my oven!
i mean you can reflow with one why cant you desolder?

so i turned on my convection oven to 550*F grabbed some aluminum pans and had at it



first i just put the motherboard on a cut out cooking pan and threw it in ... at about 300* the capacitors started popping so i removed it pulled all the capacitors out with pliers and put it back in

just about all solder melts at 400*f so i checked the temperature of the board to make sure there around 400*f



first time i took it out and i tapped it in another cooking sheet to drop most components than i took the plate of the motherboard to scrape some SMD components off ... i than put it back in for it to reheat up than id hold the PCBs at a 45* angle like \ and tap the back with a large fork and it would pull most threw hole components out ... after 3 times generally all the components were gone ... any remaining ones i removed with a small torch but that was only a few small SMD parts that got snagged



i than cleaned up the PCBs with a torch and some flicking to make them smooth and im going to sell them to a friend of mine who makes custom jewelry

[machinelou]

So, this works for most things except capacitors?

[BiOzZ]

So, this works for most things except capacitors?

electrolytic capacitors or other oil filled caps wont work

[robodonut]

Somehow, the idea of putting devices that possibly contain lead, toxic electrolyte fluid, arsenic, etc. in a cooking oven seems like a bad idea to me.

[Daid]

A bit of lead never killed anyone

It seems to give pretty good results, but 400F is over the absolute maximum rating for a lot of sensitive electrical components. But seems a decent way to salvage the connectors.

[BiOzZ]

Somehow, the idea of putting devices that possibly contain lead, toxic electrolyte fluid, arsenic, etc. in a cooking oven seems like a bad idea to me.

than only use ROHS complaint devices? XD

the level is far to small to cause any real concern

[MS3FGX]

Yeah...I'm not going to be putting any circuit boards into the oven my daughter's food is cooked in, thanks. But I guess if you had a spare oven (kinda odd) or more practically a toaster oven, this looks like an easy way to strip boards quickly.

[hypercube33]

What temp should we set the oven to, I'm totally doing this this week to my box of motherboards, cable modem, etc.

200'F is what most components can take, from what I've seen. So half of 400'F isnt "right"

[robodonut]

What temp should we set the oven to, I'm totally doing this this week to my box of motherboards, cable modem, etc.

200'F is what most components can take, from what I've seen. So half of 400'F isnt "right"

Are you sure you've got the right temperature scale? Solder melts around 200 Celsius.

[hypercube33]

Very much so. I've seen computer components run fine over 90'C ==198~F or so in my head.

So someone above complained that 400'[b]F[/b] was way too much, and he should do half of that (obviously, 200'F) which wont melt crap.