[sdiy] Prophet 5 dead output after ship...anyone?

[Tim Parkhurst]

> -----Original Message-----
> From: Bob Weigel [mailto:sounddoctorin at imt.net]
> Sent: Tuesday, June 14, 2005 12:00 AM
> To: analogue list; synthdiy
> Subject: [sdiy] Prophet 5 dead output after ship...anyone?
> 
> I sent a P5 over to GB that had worked perfect here the whole way.  I
> tested it one last time after doing a little touch up on the key
> allignment or something as I recall, then boxed it up and shipped it
> with a great box design that had it floating on white foam end blocks
> pretty well isolated all the way there.
> He said it seems to be responding to patch changes and when you
> hit
> keys the LED flickers a bit as it does when MIDI information comes in.
> But no sound out.  I told him to verify that it's getting to the
> master
> volume with a headphone amp or such but..anybody have any thoughts on
> what likely happened. He didn't see any wires falling off or anything.
> He tried programming a patch with filter open etc. no go-Bob
> 

Hi Bob, 

If you think the your customer is capable of doing it, I'd suggest having
him open up the P5 and disconnecting/reseating every cable connection he can
get to. Might also be worth it to press on any socketed ICs to make sure
they're properly seated (after hooking up a wrist strap first, or at least
always keeping one hand on a metal part of the chassis). I had two synths go
belly up on me in the last month, and both were fixed by
disconnecting/reseating everything. 

Basically, I think no matter how well the P5 was packed, the internals still
get shaken around during transport. I'd bet Harry's next paycheck that it's
no more than a bad connection. MAYBE it's an 'iffy' solder joint that got
wiggled a little too hard on the trip across the pond, but the
socket/connector check would certainly be easier for the customer to do. And
finally, though this is a bit 'out there', perhaps a PS trimmer got knocked
around enough to put one of the supplies too far out of whack. Maybe have
the customer check the supply voltages too. Maybe. 

Anyway, just my $US0.02



Tim (surely you didn't think I was going to bet my OWN paycheck) Servo

"And don't call me 'Shirley'" - Leslie Nielsen





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