[sdiy] juno 106 (illogical) behaviour

[Tom Wiltshire]

Those images look like someone scratched the soldermask off to get a probe onto the keyboard PCB.
I think someone definitely opened the keyboard before. No way that happened by any kind of accident.

T.

On 23 Feb 2012, at 08:50, Antonio Tuzzi wrote:

> so...
> was not a cpu fault but the keyboard pcb with interrupted traces
> (you all were right!)
> 
> http://img46.imageshack.us/img46/6109/img1560el.jpg
> http://img33.imageshack.us/img33/1269/img1562xn.jpg
> 
> but WHY?!
> 
> corrosion ? is in 6 different spots
> drag from keys ? (a couple of spot presents kind of scratches) (but keys don't touch the pcb!)
> 
> I'm quite sure nobody opened the keyboard before
> 
> for the 2 button in the front panel, are simply failing switches
> 
> Thank you
> Antonio