7 Mar
2002
7 Mar
'02
7:15 a.m.
--- Ben Franchuk <bfranchuk(a)jetnet.ab.ca> wrote:
Reminds me of getting TTL of old PCB's... gas
torch and a good thump.
Never tried it myself.
Works on old enough boards - double-sided mostly. Multilayer boards
have thicker plating and smaller effective-diameter through-holes.
Doesn't work well if the leads are clinched.
Personally, I reflow the board over a solder pot that's overfilled, and
remove the ICs with a chip puller (to keep my hands away from them, and
to provide enough grip to make clinched leads release). I have recovered
a few pounds of 41256 chips that way (from boards that were previously
stripped of other things) and a wad of things off ISA motherboards.
-ethan
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