Synth-DIY Yahoo! Groups Archives

480 kit question

2005-01-18 by Chris Walcott

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

RE: [motm] 480 kit question

2005-01-19 by J. Larry Hendry

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