MOTM

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


-----Original Message-----
From: Chris Walcott [mailto:chris@...]
Sent: Tuesday, January 18, 2005 11:46 AM
To: MOTM List
Subject: [motm] 480 kit question


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?

--
Chris Walcott
Chief Engineer
Fake Science
email: chris@...
website: www.fakescience.com
phone: +1.510.336.1241