[sdiy] problematic sh101

[Dave Magnuson]

At 11:58 AM 11/6/04, Metrophage wrote:

>When there is so much flexing, I have found that besides the obvious
>checking of wires, that parts can separate their pads in ways which can
>be difficult to see. A DR-110 (also in a plastic case) I was working on
>last week was boggling me with it's intermittant noise-circuit cutout.
>Turned out to be an electrolytic cap which was flexed off of the board
>on one side. The joint appeared solid to me, but the pad had lifted.


I know this problem all to well... I severely hacked up a pair of DR-110s, 
and it has the absolute worst PCB quality of any machine I've ever worked 
on.  If you look at the traces funny they seem to pop off.  Every wire that 
you fly off the circuit board needs to be thoroughly supported or the 
tiniest bit of movement will tear a pad off.  It was a true lesson in 
patience.... I actually want to add more modifications to the DR-110, but 
it's such a pain that I may not ever do it...

I haven't really had this problem with my SH-101, but it's certainly 
possible.  The '101 boards aren't exactly "industrial quality"  :)

Dave

Resonant Frequency:
resfreq at hoohahrecords.com
http://www.hoohahrecords.com/resfreq/index.html