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

[Tim Parkhurst]

You paid $500 for a 78xx regulator?!? Barry, I'll GLADLY sell you one for
$250.

;-) nudge, nudge.




Tim (who would LOVE to find a 'dead' P5 for $500) Servo

"Imagination is more important than knowledge." - Albert Einstein




> -----Original Message-----
> From: Barry Klein [mailto:Barry.L.Klein at wdc.com]
> Sent: Tuesday, June 14, 2005 4:33 PM
> To: analogue list; synthdiy
> Subject: RE: [sdiy] Prophet 5 dead output after ship...anyone?
> 
> There are 78xx/79xx regulators mounted to the rear chassis that
> typically
> have their legs break with shipment.  Probably you have 5V but not +/-
> 15V.
> I typically buy these for $500  :-)
> 
> 
> Barry
> 
> 
> -----Original Message-----
> From: owner-synth-diy at dropmix.xs4all.nl
> [mailto:owner-synth-diy at dropmix.xs4all.nl] On Behalf Of Tim Parkhurst
> Sent: Tuesday, June 14, 2005 4:23 PM
> To: analogue list; synthdiy
> Subject: RE: [sdiy] Prophet 5 dead output after ship...anyone?
> 
> > -----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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