How to Remove chips/processors from PCB?

[debs3759]

Wouldn't heating the entire board to 180 degrees do damage to the core if the maximum rated temperature for storage is a lot lower? I tend to think that the extremely fine wires used to connect the core to the poins on any chip will potentially vaporise at a much lower temperature than a lump of thje same metal...

That's why I tend to agree with a heatgun or blowtorch (although a blow torch isn't my preferred option, flames can do more damage than hot air...)

Of course, if a chip is assumed dead in the first place, an oven cannot make it any deader

Mind you, I ahve only recently started considering desoldered chip to be collectible, so I'm sure my opinions on this will change in the close future, as I come across more boards to remove chips from

[chip68]

[Marcin]

Today I desoldered 286 in PLCC from PCB and cleaned from tin ... it works perfect on other motherboard.

PS. I used heatgun as always.

[Root]

[debs3759]

That's all good to know - it's going to ease some of the stress I have when I desolder chips

[JAC]

I caught the tail end of a documentary on electronic waste last night on tv.. they showed rows of women in china sat in front of small hot plates. They were placing circuit boards on the hot plates to melt the solder, then removing the components - off all kinds of circuit boards. I didn’t recognise them but there were piles and piles of components and boards of all kinds for stripping and the components for sorting. The workers had no respiratory protection or protective clothing. Some just used their hands.

The hot plate method looked efficient, but about 200 years out of date in working practices.

[Windmiller]

Got myself a Grizzly H0801 heat gun and a box of Sun and Apple daughter boards that are in various states.

Our local college surplus is insane, lots of cool stuff. I really wish I new more about some of the old 1960's, 70's and 80's equipment because they seem to have alot of old stuff.

[Wizzard1]

I do the over method, and also assemble stuff the same way