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solder prices about to jack?
shardian:
If the new stuff is anything like the crap I fought over the weekend before last, then we are all screwed. My buddy had a newer circuit board on which he needed to add a pin header. The spot for the header was factory soldered, but with nothing there - just solder in the holes. Anyways, I told him I would do it for him - after all, wicking out the stuff and putting in the header wouldn't take but a few minutes. Holy hell! That stuff would NOT heat, and would NOT wick hardly at all. I had to ram a needle down thru each hole to get most of the gunk out, and it took forever. I think I spent an hour and a half getting those holes cleaned out enough to insert the header. Even once I got it in and soldered back up, things just didn't look or feel "right".
Ken Layton:
Solder wick won't work with the new stuff. The reason it seemed like it didn't heat right is because the new stuff requires much more heat (temperature is higher). Higher heat and circuit boards don't mix.
shardian:
--- Quote from: pinballjim on March 17, 2008, 05:48:30 pm ---I always melt a little new solder onto old solder when I'm trying to remove it... makes the process much, much easier.
--- End quote ---
That didn't work either.
ChadTower:
I've run into that a few times. On some of the really old stuff pretty much the only thing that works on clearing out holes is vacuum. Adding solder, wick, anything like that just doesn't get it done easily. All the while the little heat clock in your head is ticking away while you think "if I don't get this done soon I'm going to burn the throughhole off..."
The only thing I've seen that has been at all effective on those particular spots are liquid flux follwed by cleaning with alcohol. It doesn't do the whole job but it does seem to help consistently.
Edgedamage:
How much solder does one really need? This roll has been in use since 1991. And has been used to fix at least 20 pinballs. Also I did at least 7 Williams cabs re-wiring and my mame cab. And hundreds of little projects.
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