[sdiy] problematic sh101

[Metrophage]

--- Senso <senso at dds.nl> wrote:
> If you don't put pressure on the board itself and pulling and bending
> the wiring doesn't cause a problem, then the boards itself needs to 
> be scrutinized.
> Could be a solder joint of course, but once you've done all of those,
> 
> you might have to look at the traces and check for hair fractions. 
> Not a fun job when the problem comes and goes.
> Since the machine also loses power at times, maybe you should 
> concentrate first on that part of the circuit. Could very well be the
> 
> reason for all the other problems.
> 
> Senso

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.

CJ
> 
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