Pay dirt !! My 480s arrived. YES !! In fact, I found time to complete one of the PCBs. :-) I used the water clean solder for all of the parts normally used except for the transistors. Then, I did my last board wash prior to putting on all the parts where I used no-clean (the usual suspects). Last to go on mine were the tempcos and transistors since heat compound was involved.
I did my transistors slightly different. I cut about a 3/8" length of heatshrink. I put my transistors face to face with a little heat goop, and then put heat shrink around (and heated) the combination to hold them tightly together. Then, I soldered the "six-legged" device onto the PCB. I know my pairs are heat bonded. Now, maybe I have taken some of the cooling away from the transistors. But, I am betting it is not enough to matter.
So, right or wrong, that's my $.02.
Larry
I was wondering about the pre stuffed board. The instructions says to use no-clean solder after all the resistors are soldered in. But that means using no-clean on a lot of parts that normally get organic solder like caps and the power connector.
Any special reason why the change?
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Chris Walcott
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