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At 07:31 PM 3/5/97 +0800, you wrote:
Poh,
Baking should have at least helped the problem. You might try baking
at a higher temp. (150 deg. C or 300 F)
You should also ask your board vendor what method of hole sensitization
they're useing. (Electroless copper, Carbon, Graphite?)
Good Luck.....John
>I have a serious problem on some of the board that stucked in the store.
>All of them is at least 2 years.
>When I wave-soldered the bare board, it has a lot of blow-holes, solder
>balls, pin-holes.
>
>Anyway, I try to purge all of them, but there are 6000 pieces in the Store.
>
>I try to bake at at 100 deg. C for 4 hours. Too bad, it doesn't work.
>
>I try to bake for any 4 hours just before wave-soldering. The result is
>terrible. Not even a slight Help !!!
>
>Can anybody give me some advises what should I do ???
>
>Thanks in Advance
>
>Poh ..
>
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